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In this episode of "PICU Doc on Call," pediatric intensivists Dr. Rahul Damania, Dr. Pradip Kamat, and Dr. Monica Gray discuss a critical case involving a 16-year-old male who experienced severe carbon monoxide poisoning after being found unresponsive in a garage. They chat about the pathophysiology, clinical manifestations, diagnostic workup, and management of carbon monoxide toxicity. Furthermore, they cover the importance of early oxygen administration, recognizing potential delayed neurological sequelae, and keeping an eye out for cardiac complications. Tune in and hear more about a comprehensive approach to treatment and the significance of multidisciplinary support for achieving the best patient outcomes.
Show Highlights:
Case presentation of a 16-year-old male with severe carbon monoxide poisoningPathophysiology of carbon monoxide toxicity and its effects on hemoglobinClinical manifestations and symptoms associated with carbon monoxide poisoningDiagnostic workup for suspected carbon monoxide exposureManagement principles for treating carbon monoxide poisoning in pediatric patientsSources and scenarios leading to carbon monoxide poisoningComplications arising from carbon monoxide exposure including neurological injuriesImportance of early oxygen administration and monitoring in treatmentDiscussion of hyperbaric oxygen therapy and its indicationsKey takeaways for clinicians regarding the management and follow-up of carbon monoxide poisoning casesWe welcome you to share your feedback, subscribe & place a review on our podcast! Please visit our website picudoconcall.org.
References:
Tapking, C., et al. (2021). Burn and inhalation injury. In J. J. Zimmerman & A. T. Rotta (Eds.), Fuhrman and Zimmerman’s Pediatric Critical Care (6th ed., pp. 1347–1362). Elsevier.Nañagas KA, Penfound SJ, Kao LW. Carbon Monoxide Toxicity. Emerg Med Clin North Am. 2022 May;40(2):283-312. doi: 10.1016/j.emc.2022.01.005. Epub 2022 Apr 5. PMID: 35461624.Smollin C, Olson K. Carbon monoxide poisoning (acute). BMJ Clin Evid. 2010 Oct 12;2010:2103. PMID: 21418677; PMCID: PMC3217756.Palmeri R, Gupta V. Carboxyhemoglobin Toxicity. [Updated 2023 Apr 17]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan.
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Welcome to another exciting episode of PICU Doc on Call! Today, we're diving deep into the world of pediatric critical care with our expert hosts, Dr. Rahul Damania, Dr. Pradip Kamat, and Dr. Monica Gray. Get ready to unravel the mysteries of the oxygen extraction ratio (O2ER) and its pivotal role in managing pediatric acute respiratory distress syndrome (ARDS) and multi-organ dysfunction.
Picture this: a seven-year-old girl battling severe pneumonia that spirals into ARDS and septic shock. Our hosts walk you through this gripping case, shedding light on calculating O2ER and why central venous oxygen saturation (ScvO2) is a game-changer. They'll share their top strategies for optimizing oxygen delivery and cutting down on oxygen demand.
But that's not all! This episode is all about the holistic approach to managing critically ill pediatric patients. Tune in to discover how these insights can lead to better outcomes for our youngest and most vulnerable patients. Don't miss out on this vital conversation!
Show Highlights:
Clinical significance of the oxygen extraction ratio (O2ER) in pediatric critical careImportance of understanding oxygen delivery and consumption in critically ill patientsCalculation and interpretation of O2ER and its relationship to central venous oxygen saturation (ScvO2)Physiological concepts related to oxygenation, including intrapulmonary shunting and ventilation-perfusion mismatchManagement strategies for increasing oxygen delivery and reducing oxygen demand in ARDS and septic shockInterventions such as blood transfusions, sedation, and optimization of cardiac outputImplications of lactic acidosis and anaerobic metabolism in the context of inadequate oxygen deliveryHolistic approach to patient management, focusing on both numerical values and overall metabolic needsWe welcome you to share your feedback, subscribe & place a review on our podcast! Please visit our website picudoconcall.org.
References:
Fuhrman B.P. & Zimmerman J.J. (Eds.). Pediatric Critical Care, 6th ed. Elsevier; 2021. (Key concepts of oxygen delivery, consumption, and extraction in shock states are discussed in Chapter 13) .Nichols D.G. (Ed.). Roger’s Textbook of Pediatric Intensive Care, 5th ed. Wolters Kluwer; 2016. (Comprehensive review of oxygen transport and utilization in critically ill children, including ARDS and shock).Lucking S.E., Williams T.M., Chaten F.C., et al. Dependence of oxygen consumption on oxygen delivery in children with hyperdynamic septic shock and low oxygen extraction. Crit Care Med. 1990;18(12):1316–1319. doi:10.1097/00003246-199012000-00002.Ronco J.J., Fenwick J.C., Tweeddale M.G., et al. Pathologic dependence of oxygen consumption on oxygen delivery in acute respiratory failure. Chest. 1990;98(6):1463–1466. doi:10.1378/chest.98.6.1463 .Carcillo J.A., Davis A.L., Zaritsky A. Clinical practice parameters for hemodynamic support of pediatric and neonatal septic shock. Crit Care Med. 2002;30(6):1365–1378. (ACCM guidelines emphasizing ScvO₂ targets in shock) .Emeriaud G, López-Fernández YM, Iyer NP, et al; PALICC-2 Group; PALISI Network. Executive summary of the second international guidelines for the diagnosis and management of pediatric ARDS (PALICC-2). Pediatr Crit Care Med. 2023;24(2):143–168. doi:10.1097/PCC.0000000000003147.
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In this episode, Dr. Rahul Damania, Dr. Pradip Kamat, and Dr. Monica Gray dive into a critical case involving a five-week-old baby facing acute respiratory failure due to pertussis. They chat about how this condition shows up, how it's diagnosed, and the best ways to manage it, especially considering the serious complications it can cause in infants, like pulmonary hypertension and the potential need for ECMO. The conversation underscores the importance of catching it early and providing supportive care, while also highlighting how crucial vaccination is in preventing pertussis. Tune in to learn how severe this disease can be and why staying alert in pediatric care is so important.
Show Highlights:
Clinical case of a five-week-old infant with acute respiratory failure and pertussis diagnosisEpidemiology and public health impact of pertussis, including vaccination rates and outbreak patternsPathophysiology of pertussis and its effects on respiratory health, particularly in infantsClinical presentation of pertussis, including stages of the disease and atypical symptoms in infantsDiagnostic approaches for pertussis, including laboratory findings and PCR testingManagement strategies for severe pertussis, including supportive care and antibiotic therapyPotential complications associated with pertussis, especially in young infantsDifferential diagnosis considerations for pertussis and distinguishing features from other infectionsImportance of vaccination in preventing pertussis and reducing morbidity and mortalityECMO as a treatment option for severe cases and its associated challenges, and outcomesWe welcome you to share your feedback, subscribe & place a review on our podcast! Please visit our website picudoconcall.org.
References:
Fuhrman & Zimmerman - Textbook of Pediatric Critical Care Chapter and Rogers texbook of Pediatric intensive care -both do not have any Pertussis mentioned in their index.Rowlands HE, Goldman AP, Harrington K, Karimova A, Brierley J, Cross N, Skellett S, Peters MJ. Impact of rapid leukodepletion on the outcome of severe clinical pertussis in young infants. Pediatrics. 2010 Oct;126(4):e816-27. doi: 10.1542/peds.2009-2860. Epub 2010 Sep 6. PMID: 20819895.Lauria AM, Zabbo CP. Pertussis. [Updated 2022 Oct 7]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK519008/Berger JT, Carcillo JA, Shanley TP, Wessel DL, Clark A, Holubkov R, Meert KL, Newth CJ, Berg RA, Heidemann S, Harrison R, Pollack M, Dalton H, Harvill E, Karanikas A, Liu T, Burr JS, Doctor A, Dean JM, Jenkins TL, Nicholson CE; Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Collaborative Pediatric Critical Care Research Network (CPCCRN). Critical pertussis illness in children: a multicenter prospective cohort study. Pediatr Crit Care Med. 2013 May;14(4):356-65. doi: 10.1097/PCC.0b013e31828a70fe. PMID: 23548960; PMCID: PMC3885763.Cousin, V.L., Caula, C., Vignot, J. et al. Pertussis infection in critically ill infants: meta-analysis and validation of a mortality score. Crit Care 29, 71 (2025). https://doi.org/10.1186/s13054-025-05300-2Domico M, Ridout D, MacLaren G, Barbaro R, Annich G, Schlapbach LJ, Brown KL. Extracorporeal Membrane Oxygenation for Pertussis: Predictors of Outcome Including Pulmonary Hypertension and Leukodepletion. Pediatr Crit Care Med. 2018 Mar;19(3):254-261. doi:... -
In today’s episode, Dr. Rahul Damania and Dr. Pradip Kamat welcome their new co-host, Dr. Monica Gray. They’ll dive into the topic of upper airway obstruction in children and explore a case involving a 12-month-old girl who presents with stridor and fever. Throughout the discussion, they delve into the underlying causes, possible diagnoses, and management strategies. Key takeaways include the significance of keeping the child calm, ensuring proper positioning, and utilizing treatments such as dexamethasone and Racemic epinephrine. They’ll also touch on advanced therapies and serious infections like epiglottitis. The episode highlights the importance of recognizing stridor, knowing when to consider PICU admission, and the effectiveness of low-dose dexamethasone. Tune in to learn more!
Show Highlights:
Overview of upper airway obstruction in pediatric patientsCase presentation of a 12-month-old girl with stridor and feverDiscussion on the pathophysiology of stridor and its clinical significanceDifferential diagnoses for stridor, including croup, epiglottitis, and foreign body aspirationManagement strategies for upper airway obstruction, including stabilization and medicationImportance of calming the child and optimal positioning during treatmentUse of dexamethasone and racemic epinephrine in managing croupAdvanced therapies, such as Helios, for specific casesIndicators for pediatric intensive care unit (PICU) admissionKey clinical points and takeaways for healthcare professionals managing airway emergenciesReferences:
Fuhrman & Zimmerman - Textbook of Pediatric Critical Care Chapter 47 Otteson T, Richardson C, Shah J: Diseases of the upper Airway. Pages 524-535Rogers Textbook of Pediatric Intensive Care: Chapter 25; Ong May Soo Jacqueline, Tijssen J, Bruins BB and Nishisaki A: Airway management. Pages 341-365Reference: Asmundsson AS, Arms J, Kaila R, Roback MG, Theiler C, Davey CS, Louie JP. Hospital Course of Croup After Emergency Department Management. Hosp Pediatr. 2019 May;9(5):326-332. doi: 10.1542/hpeds.2018-0066. PMID: 30988017; PMCID: PMC6478427.Reference: Aregbesola A, Tam CM, Kothari A, Le ML, Ragheb M, Klassen TP. Glucocorticoids for croup in children. Cochrane Database Syst Rev. 2023 Jan 10;1(1):CD001955. doi: 10.1002/14651858.CD001955.pub5. PMID: 36626194; PMCID: PMC9831289.Previous Episode Mentioned:
PICU Doc On Call Episode 80
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In this episode of PICU DOC on Call, Dr. Rahul Damania and Dr. Pradip Kamat discuss the resurgence of measles in the United States. They explore the virus's pathophysiology, clinical features, diagnostic methods, treatment options, and complications. They emphasize the critical role of vaccination in preventing measles outbreaks and address the historical context and public health challenges related to vaccine hesitancy. The speakers highlight the severe complications of measles, especially in immunocompromised patients, and advocate for robust vaccination efforts to protect vulnerable populations and prevent the spread of this preventable disease. Tune in to hear more!
Show Highlights:
Resurgence of measles in the United StatesHistorical context of measles outbreaks and vaccination impactCurrent statistics and recent cases of measlesPathophysiology of the measles virusClinical features and progression of measles infectionDiagnostic approaches for confirming measlesDifferential diagnosis considerations for fever and rashTreatment options and the role of vaccinationComplications associated with measles, including severe outcomesPublic health challenges related to vaccine hesitancy and advocacy for immunizationResources:
CDC Measles Info Page
WHO Measles Global Surveillance
References:
Fuhrman & Zimmerman. Textbook of Pediatric Critical Care, Ch. 52
Long S et al. Principles and Practice of Pediatric Infectious Diseases, Ch. 227
Moss WJ. Measles. Lancet. 2017;390(10111):2490-2502
Paules CI, Marston HD, Fauci AS. NEJM. 2019;380(23):2185-2187
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In this episode of PICU DOC on Call, Dr. Rahul Damania and Dr. Pradip Kamat chat about a challenging case involving a 15-year-old girl dealing with acute myocarditis and worsening respiratory failure. They explore the intricate dance between the heart and lungs, especially how positive pressure ventilation can affect heart function. They cover important topics like cardiac output, preload, and afterload, and discuss the delicate balance needed to manage myocarditis effectively. The episode offers practical tips for optimizing care for critically ill children, underscoring the importance of personalized treatment plans and teamwork in pediatric critical care. Tune in!
Show Highlights:
Clinical case of a 15-year-old girl with acute myocarditis and respiratory failureImportance of understanding cardiopulmonary interactions in pediatric critical careEffects of positive pressure ventilation on cardiac functionKey concepts of cardiac output, preload, and afterload in the context of myocarditisChallenges of managing hemodynamic instability in critically ill pediatric patientsDifferences between spontaneous breathing and positive pressure ventilationStrategies for optimizing preload and fluid management in myocarditis patientsTailoring ventilatory support and transitioning to invasive mechanical ventilationMonitoring for arrhythmias and managing myocardial function with inotropic supportImportance of frequent assessments and collaboration with cardiac ICU teams for patient care
Management StrategiesOptimizing Preload:
Volume depletion is common in patients with hypotension and tachycardia. A careful fluid challenge is important to restore circulatory volume, but fluid overload should be avoided, especially with impaired left ventricular function.Tailoring Ventilatory Support:
Adjust BiPAP settings to improve oxygenation without overloading the heart with excessive positive pressures.Use the optimal level of PEEP to recruit alveoli while maintaining adequate venous return to the heart.Supporting Myocardial Function:
Inotropic support (e.g., milrinone) may be necessary to improve myocardial contractility. Milrinone also provides vasodilation, which can reduce afterload but must be used cautiously due to its potential to lower blood pressure.Frequent Reassessments:
Bedside echocardiography and regular monitoring of biomarkers (lactate, BNP) and clinical status are essential for ongoing evaluation.In severe cases, advanced therapies like ECMO may be required if the patient’s hemodynamic status continues to deteriorate.
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Today, pediatric intensivists Dr. Pradip Kamat and Dr. Rahul Damania discuss a complex case of a 12-year-old girl who suffered a seizure and unresponsiveness due to a subarachnoid hemorrhage from a ruptured aneurysm. They explore the multi-system effects of traumatic brain injury (TBI) and intracranial hemorrhage, focusing on non-neurologic organ dysfunction.
They’ll also highlight the impact on cardiovascular, respiratory, renal, and hepatic systems, emphasizing the importance of understanding these interactions for better patient management.
Tune in to hear relevant studies and management strategies to improve outcomes in pediatric TBI cases.
In This Episode:
Clinical case of a 12-year-old girl with seizure and unresponsiveness due to subarachnoid hemorrhage from a ruptured aneurysmManagement of non-neurologic organ dysfunction in traumatic brain injury (TBI) and intracranial hemorrhageMulti-system effects of brain injuries, including cardiovascular, respiratory, renal, and hepatic complicationsImportance of recognizing non-neurologic organ dysfunction in pediatric patientsEpidemiology and prevalence of non-neurologic organ dysfunction in patients with aneurysms or subarachnoid hemorrhageMechanisms of organ dysfunction following brain injury, including inflammatory responses and cytokine releaseManagement strategies for cardiovascular complications in TBI patients.Discussion of respiratory complications, such as acute lung injury and ARDS, in the context of TBIRenal and hepatic dysfunction associated with traumatic brain injury and their managementEmphasis on the need for a comprehensive understanding of organ interactions to improve patient outcomes in pediatric critical careConclusion
In summary, the episode underscores the complex interplay between brain injury and multi-system organ dysfunction. The hosts emphasize the need for a comprehensive understanding of these interactions to improve patient outcomes in pediatric TBI cases. They advocate for a team-based approach to management, focusing on individual patient physiology and the delicate balance required to address the challenges posed by non-neurologic organ dysfunction.
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We hope you found value in this case-based discussion. Please share your feedback, subscribe, and leave a review on our podcast. For more resources, visit our website at PICUoncall.org.
Thank you for joining us, and stay tuned for our next episode!
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Welcome to another insightful episode of PICU on Call, a podcast dedicated to current and aspiring intensivists. In this episode, our hosts, Dr. Pradip Kamat, Dr. Rahul Damania, and their colleague, Dr. Jordan Dent, delve into the complexities of managing pneumonia in pediatric patients. The discussion is anchored around a clinical case involving a 10-year-old girl presenting with difficulty breathing and a fever, suggestive of pneumonia. We will break down the key themes and insights from the case, providing a comprehensive guide to understanding and managing pediatric pneumonia.
Case Presentation
The episode begins with a detailed case presentation:
Patient: 10-year-old girl, 28-week preemie with chronic lung disease.Symptoms: Progressive respiratory distress over eight days, worsening cough, increased work of breathing, hypoxemia (oxygen saturation in the low 80s despite supplemental oxygen).Findings: Chest X-ray reveals bilateral lower lobe infiltrates and a left-sided pleural effusion. Lab results show elevated CRP and a positive respiratory PCR for a bacterial pathogen.This case sets the stage for an in-depth discussion on the various aspects of pediatric pneumoRisk Factors for Pneumonia
Understanding the risk factors for pneumonia is crucial for early identification and prevention.
These risk factors can be categorized into three main groups:
Host Factors
Incomplete Immunization Status: Children who are not fully vaccinated are at higher riskYoung Age: Infants and young children have immature immune systems, making them more susceptibleLower Socioeconomic Status: Limited access to healthcare and poor living conditions can increase riskEnvironmental Factors
Exposure to Tobacco Smoke: Secondhand smoke can damage the respiratory tract and impair immune functionSeasonal Variations: Pneumonia cases peak during fall and winter due to increased circulation of respiratory virusesContact with Other Children: Daycare settings and schools can facilitate the spread of infectionsHealthcare-Associated Factors
Prolonged Mechanical Ventilation: Increases the risk of ventilator-associated pneumonia (VAP)Nasogastric Tube Placement: Can introduce pathogens into the respiratory tract.Neuromuscular Blockade: Impairs the ability to clear secretionsInadequate Humidification: Dry air can damage the respiratory mucosaPathogenesis of Pneumonia
Pneumonia occurs when pathogens invade the lower respiratory tract, triggering an inflammatory response. This leads to fluid accumulation and white blood cell infiltration in the alveoli, resulting in:
Decreased Lung Compliance: The lungs become stiffer and harder to expand.Increased Airway Resistance: Narrowing of the airways makes breathing more difficult.Ventilation-Perfusion (V/Q) Mismatch: Impaired gas exchange leads to hypoxia and tachypnea.Etiology by Age Group
The causative pathogens of pneumonia vary by age group:
Neonates: Group B Streptococcus, E. coli, Listeria, KlebsiellaChildren Under 5: Viral causes (50% of cases) such as RSV, human metapneumovirus, and influenza, with bacterial causes like Streptococcus pneumoniae and Haemophilus influenzaeOlder Children and Teens: Mycoplasma pneumonia, Chlamydia pneumonia, and Streptococcus pneumoniaeClassification of Pneumonia
Pneumonia can be classified based on the acquisition setting:
Community-Acquired Pneumonia (CAP): Occurs in patients not hospitalized in the past monthHospital-Acquired Pneumonia (HAP): Develops after 48 hours of... -
In today’s episode, we explore a tragic but educational case involving a 15-year-old girl who suffered severe inhalation injury following a house fire. While heroically rescuing her brother and his friend, she endured prolonged cardiac arrest and severe multi-organ dysfunction. We’ll focus on the pathophysiology, investigation, and management of inhalation injuries, including the critical role of recognizing carbon monoxide and cyanide poisoning in these complex cases.
Key Learning Points:
Exposure to house fire and prolonged cardiac arrestSigns of inhalation injury and airway compromisePathophysiology of inhalation injuries and their impact on multiple organ systemsManagement strategies for inhalation injury, including airway protection and ventilationDifferentiating carbon monoxide and cyanide poisoning in pediatric fire victimsCase Presentation
A 15-year-old previously healthy girl is brought to the Pediatric Intensive Care Unit (PICU) after experiencing cardiac arrest during a house fire. She was found unconscious by firefighters after a heroic rescue attempt where she saved her brother and his friend. Upon arrival at the hospital, she was unresponsive, intubated, and in severe cardiovascular distress with signs of multi-organ dysfunction.
Key findings include:
Soot deposits and superficial burns on extremitiesProlonged resuscitation (45 minutes of field CPR and 47 minutes of in-hospital CPR)Cardiovascular compromise with PVCs, cool extremities, and delayed capillary refillMetabolic acidosis, AKI, coagulopathy, transaminitisSevere hypoxic-ischemic encephalopathy on EEGThese findings raise immediate concern for inhalation injury, which is the primary focus of today's discussion.
Pathophysiology of Inhalation Injury
When a patient is exposed to smoke and hot gases during a fire, inhalation injury results in significant damage to the respiratory system. Inhalation injury has three main components:
Upper airway involvement – Thermal injury can cause swelling and obstruction.Chemical pneumonitis – Noxious chemicals like carbon monoxide and cyanide trigger inflammation in the lungs. -
Welcome and Episode IntroductionHosts: Dr. Pradip Kamat (Children’s Healthcare of Atlanta/Emory University) and Dr. Rahul Damania (Cleveland Clinic Children’s Hospital)Mission: A podcast dedicated to current and aspiring pediatric intensivists, exploring intriguing PICU cases and acute care pediatric managementFocus of the Episode: Managing toxic alcohol ingestion in the PICU with emphasis on ethanol, methanol, ethylene glycol, propylene glycol, and isopropyl alcohol
Case PresentationPatient Details: A 7-month-old male presented with accidental ethanol ingestion after his formula was mixed with vodkaKey Symptoms: Lethargy, uncoordinated movements, decreased activity, and ethanol odorInitial Labs & Findings:EtOH level: 420 mg/dL.Glucose: 50 mg/dL.Normal CXR and EKG.PICU Presentation: Tachycardic, normotensive, lethargic, with signs of CNS depressionInitial Management: Dextrose infusion, glucose monitoring, neurological observation, and ruling out complications
Key Learning Points from the CaseToxic alcohol ingestion in pediatrics requires rapid stabilization and targeted interventionsHypoglycemia and CNS depression are common features of ethanol toxicity in infantsManagement prioritizes glucose correction, airway support, and close neurological monitoring
Deep Dive: Toxic Alcohols in the PICU1. Ethanol
Typical Presentation in Infants/Toddlers: Hypotonia, ataxia, coma, hypoglycemia, hypotension, and hypothermiaDiagnostic Workup:Focus on CNS and metabolic effectsLabs: Glucose, electrolytes, bicarbonate, anion gap, ketones, toxicology screenImaging (head CT) if indicatedManagement: Stabilization, IV dextrose for hypoglycemia, NPO status until alert, and consultation with poison control and social work2. Methanol
Sources: Windshield fluids, cleaning agents, moonshineClinical Stages:
Early: Dizziness, nausea, vomiting (0–6 hours)Latent: Asymptomatic (6–30 hours)Late: Vision disturbances, seizures, respiratory failure (6–72 hours)
Key Symptoms: “Snowstorm blindness” from retinal toxicityManagement: Fomepizole, correction of metabolic acidosis, and hemodialysis in severe cases3. Ethylene Glycol
Sources: Antifreeze, brake fluids, household cleanersPathophysiology: Metabolism to glycolic acid (acidosis) and oxalic acid (renal failure due to calcium oxalate crystals)Red Flags: Hypocalcemia, renal failure, QT prolongationManagement: Fomepizole, supportive care, and hemodialysis for severe toxicity4. Propylene Glycol
Sources: Medications like lorazepam and pentobarbitalPresentation: High anion gap metabolic acidosis at high doses, with renal and liver dysfunctionManagement: Discontinue offending agent, supportive care, and hemodialysis if severe5. Isopropyl Alcohol
Sources: Disinfectants, hand sanitizersPresentation: CNS depression, GI irritation, fruity acetone breath, but no metabolic acidosisManagement: Supportive care; fomepizole and ethanol are ineffective
Key Laboratory InsightsOsmolar Gap Formula:Measured Osmolality - Calculated OsmolalityA high osmolar gap indicates unmeasured osmoles like toxic alcohols.Lactate Gap in Ethylene Glycol: Discrepancy between bedside and lab lactate levels due to glycolate interference
Management PearlsEthanol and... -
Did you know that Multi-Organ Dysfunction Syndrome (MODS) can result from both infectious and non-infectious causes? In our latest episode, we delve deep into the pathophysiology of MODS, exploring how different organs interact and fail in sequence. We discuss key concepts like organ functional reserve and the kinetics of organ injury, which aren’t as straightforward as they seem. Tune in to learn about the non-linear progression of organ damage and how it impacts management strategies in pediatric critical care.
We break down the case into key elements:
Patient Background: A 15-year-old girl with chronic TPN dependence and a PICC line presented with septic shock and respiratory failure.Initial Presentation: Blood cultures confirmed Gram-negative rod bacteremia. She developed multi-system complications, including acute kidney injury (AKI), thrombocytopenia, and cardiac dysfunction.Management: Broad-spectrum antibiotics, mechanical ventilation, vasoactive agents, and supportive care for MODS.
Key Case Highlights:Clinical case of a 15-year-old girl with sepsis from a gram-negative rodDependence on total parenteral nutrition (TPN) and prolonged PICC line useDiscussion of septic shock, acute respiratory failure, and acute kidney injuryOverview of multiple organ dysfunction syndrome (MODS) and its definitionsPathophysiology of MODS, including organ functional reserve and kinetics of organ injuryMolecular mechanisms involved in MODS, such as mitochondrial dysfunction and immune responsesSpecific phenotypes of sepsis-induced MODS, including TAMOF and IPMOFManagement strategies for MODS, emphasizing multidisciplinary approachesRole and complications of therapeutic plasma exchange (TPE) in treating MODSImportance of recognizing signs of MODS and timely intervention in pediatric patients
Segment 1: MODS Definitions and PhenotypesKey Definition: MODS is the progressive failure of two or more organ systems due to systemic insults (infectious or non-infectious).Phenotypes:TAMOF (Thrombocytopenia-Associated Multi-Organ Failure): Characterized by thrombocytopenia, hemolysis, and decreased ADAMTS13 activity.Immunoparalysis: Persistent immunosuppression and risk of secondary infections.Sequential Liver Failure: Often associated with viral triggers.
Segment 2: Pathophysiology of MODSMolecular Insights:
Mitochondrial dysfunction and damage-associated molecular patterns (DAMPs)Innate and adaptive immune dysregulationMicrocirculatory dysfunction and ischemia-reperfusion injuryOrgan Interactions: MODS evolves through complex multi-organ interdependencies
Segment 3: Diagnosis and Evidence-Based ManagementKey Diagnostic Pearls:MODS is not solely infection-driven; it requires a shared mechanism and predictable outcomes.Use biomarkers like ADAMTS13 and TNF-α response for phenotypic classification.Management Highlights:Supportive Care: Multisystem approach including lung-protective ventilation, renal replacement therapy, and hemodynamic support.Therapeutic Plasma Exchange (TPE): Especially effective in TAMOF by restoring ADAMTS13 and removing inflammatory mediators.
Segment 4: Practical Tips for IntensivistsEarly recognition of MODS phenotypes for targeted therapyImportance of multidisciplinary teamwork in critical care settingsMonitoring for complications like TMA and immunoparalysis during prolonged ICU staysFollow Us:
Twitter: @PICUDocOnCallEmail: -
In this episode, we discuss the case of a 15-year-old girl who presents with progressive headache, nausea, vomiting, and difficulty ambulating. Her condition rapidly evolves into altered mental status and severe hydrocephalus, leading to a compelling discussion about the evaluation, diagnosis, and management of hydrocephalus in pediatric patients.
We break down the case into key elements:
A comprehensive look at acute hydrocephalus, including its pathophysiology and causesEpidemiological insights, clinical presentation, and diagnostic approachesManagement strategies, including temporary and permanent CSF diversion techniquesA review of complications related to shunts and endoscopic third ventriculostomy
Key Case Highlights:Patient Presentation:A 15-year-old girl with a 3-day history of worsening headaches, nausea, vomiting, and difficulty walkingAltered mental status and bradycardia upon PICU admissionCT scan revealed severe hydrocephalus without a clear mass lesionManagement Steps in the PICU:Hypertonic saline bolus improved her mental status and pupillary reactionsNeurosurgery consultation recommended MRI and close neuro checksInitial management included dexamethasone, keeping the patient NPO, and hourly neuro assessmentsDifferential Diagnosis:Obstructive (non-communicating) vs. non-obstructive (communicating) hydrocephalusConsideration of alternative diagnoses like intracranial hemorrhage and idiopathic intracranial hypertension
Episode Learning Points:Hydrocephalus Overview:Abnormal CSF buildup in the ventricles leading to increased intracranial pressure (ICP)Key distinctions between obstructive and non-obstructive typesEpidemiology and Risk Factors:
Congenital causes include genetic syndromes, neural tube defects, and Chiari malformationsAcquired causes: post-hemorrhagic hydrocephalus (e.g., from IVH in preemies), infections like TB meningitis, and brain tumorsClinical Presentation:
Infants: Bulging fontanelles, sunsetting eyes, irritabilityOlder children: Headaches, vomiting, papilledema, and gait disturbancesManagement Framework:
Temporary CSF diversion via external ventricular drains (EVD) or lumbar cathetersPermanent interventions include VP shunts and endoscopic third ventriculostomy (ETV)Complications of Shunts and ETV:
Shunt infections, malfunctions, over-drainage, and migrationETV-specific risks, including delayed failure years post-procedureClinical Pearl:
Communicating hydrocephalus involves symmetric ventricular enlargement and is often linked to inflammatory or post-treatment changes affecting CSF reabsorption.Hosts’ Takeaway Points:
Dr. Pradip Kamat emphasizes the importance of timely recognition and intervention in hydrocephalus to prevent complications like brain herniation.Dr. Rahul Damania highlights the need for meticulous neurological checks in PICU patients and an individualized approach to treatment.
Resources Mentioned:Hydrocephalus Clinical Research Network guidelines.Recent studies on ETV outcomes in pediatric populations.
Call to Action:If you enjoyed this discussion, please subscribe to PICU Doc On Call and leave a review. Have a topic you’d like us to cover? Reach out to us via email or on social media!
Follow Us:
Twitter: @PICUDocOnCallEmail: -
IntroductionHosts: Dr. Pradip Kamat (Children’s Healthcare of Atlanta/Emory University) and Dr. Rahul Damania (Cleveland Clinic Children’s Hospital)Mission: A podcast dedicated to current and aspiring pediatric intensivists, exploring intriguing PICU cases and acute care pediatric managementFocus of the Episode: Managing toxic alcohol ingestion in the PICU with emphasis on ethanol, methanol, ethylene glycol, propylene glycol, and isopropyl alcohol
Case PresentationPatient Details: A 7-month-old male presented with accidental ethanol ingestion after his formula was mixed with vodkaKey Symptoms: Lethargy, uncoordinated movements, decreased activity, and ethanol odorInitial Labs & Findings:EtOH level: 420 mg/dL.Glucose: 50 mg/dL.Normal CXR and EKG.PICU Presentation: Tachycardic, normotensive, lethargic, with signs of CNS depressionInitial Management: Dextrose infusion, glucose monitoring, neurological observation, and ruling out complications
Key Learning Points from the CaseToxic alcohol ingestion in pediatrics requires rapid stabilization and targeted interventionsHypoglycemia and CNS depression are common features of ethanol toxicity in infantsManagement prioritizes glucose correction, airway support, and close neurological monitoring
Deep Dive: Toxic Alcohols in the PICU1. Ethanol
Typical Presentation in Infants/Toddlers: Hypotonia, ataxia, coma, hypoglycemia, hypotension, and hypothermiaDiagnostic Workup:Focus on CNS and metabolic effectsLabs: Glucose, electrolytes, bicarbonate, anion gap, ketones, toxicology screenImaging (head CT) if indicatedManagement: Stabilization, IV dextrose for hypoglycemia, NPO status until alert, and consultation with poison control and social work2. Methanol
Sources: Windshield fluids, cleaning agents, moonshineClinical Stages:
Early:... -
Introduction:
Today, Dr. Rahul Damania, Dr. Pradip Kamat, and their guest, Dr. Jordan Dent, discuss a critical case involving a 15-year-old male who collapsed during football practice due to exertional heat stroke. The discussion emphasizes the clinical presentation, risk factors, pathophysiology, and evidence-based management of heat stroke and other heat-related illnesses in pediatric patients. The episode also delves into the role of rapid cooling interventions and long-term care to minimize mortality and morbidity.
Case Summary: A 15-year-old male with ADHD collapsed during football practice on a hot, humid day. He presented with:
Normotension (BP: 101/67 mmHg)Tachycardia (HR: 157 bpm)Tachypnea (RR: 40 breaths/min)Febrile (Rectal temp: 41.8°C/107.2°F)Dry, hot skin, GCS of 9Lab abnormalities: hyponatremia, hypokalemia, hypoglycemia, elevated creatinine, liver enzymes, lactate, CK, and troponinAfter suffering cardiac arrest and undergoing resuscitation, the patient developed multiorgan dysfunction, including seizures, encephalopathy, and cerebral edema. Despite severe initial complications, the patient demonstrated neurological improvement with left-side hemiparesis before discharge.
Key Discussion Points:
Etiology and Pathophysiology of Heat Stroke:
Heat stroke occurs when the body’s thermoregulatory mechanisms fail, leading to dangerous elevations in core body temperature. Exertional heat stroke is common during strenuous physical activity in hot, humid environments.Key physiological breakdowns include inadequate sweating, vasodilation dysfunction, and subsequent cellular damage due to hyperthermia.
Risk Factors for Exertional Heat Stroke:
Environmental factors: High temperature, humidity, lack of hydration, and breaks.Athlete-related factors: Hypohidrosis, dehydration, medical conditions, and medications (e.g., Adderall).Heat illness is the third leading cause of death in high school athletics, with American football players particularly at risk.
Spectrum of Heat-Related Illness:
Heat Cramps: Involuntary muscle contractions due to dehydration and electrolyte imbalance.Heat Syncope: Transient loss of consciousness due to heat exposure.Heat Exhaustion: Milder heat illness with core temperature < 104°F, potentially progressing to heat stroke if untreated. -
Introduction
Welcome to PICU Doc On Call, a podcast dedicated to current and aspiring pediatric intensivists. I'm Dr. Pradip Kamat from Children’s Healthcare of Atlanta/Emory University School of Medicine, and I’m Dr. Rahul Damania from Cleveland Clinic Children’s Hospital. We are two Pediatric ICU physicians passionate about medical education in the PICU. This podcast focuses on interesting PICU cases and their management in the acute care pediatric setting.
Episode OverviewIn today’s episode, we are excited to welcome Dr. Karen Zimowski, Assistant Professor of Pediatrics at Emory University School of Medicine and a practicing pediatric hematologist at Children’s Healthcare of Atlanta at the Aflac Blood & Cancer Center. Dr. Zimowski specializes in pediatric bleeding and clotting disorders.
Case PresentationA 16-year-old female with a complex medical history, including autoimmune thyroiditis and prior cerebral infarcts, was admitted to the PICU with acute chest pain and difficulty breathing. Despite being on low-dose aspirin, her oxygen saturation was 86% on room air. A CT angiography revealed a pulmonary embolism (PE) in the left lower lobe and signs of right heart strain. The patient was hemodynamically stable, and thrombolytic therapy was deferred in favor of anticoagulation. She was placed on BiPAP to improve her respiratory status. Her social history was negative for smoking, illicit drug use, or oral contraceptive use.
Key Case PointsDiagnosis: Pulmonary embolism (PE)Hemodynamics: Stable with no right ventricular (RV) strain on echocardiogramManagement Focus: Anticoagulation and consultation with the hematology/thrombosis team
Expert Discussion with Dr. Karen ZimowskiRisk Factors and Epidemiology of VTE in PediatricsPathophysiology: Venous thromboembolism (VTE) in children involves components of Virchow’s triad: stasis of blood flow, endothelial injury, and hypercoagulability.Incidence: VTE is rare in the general pediatric population but increases significantly in hospitalized children.Age Distribution: Bimodal peaks in infants and adolescents aged 15-17 years.Risk Factors: Central venous lines, infections, congenital heart disease, cancer, and autoimmune disorders.
Clinical Manifestations of DVTSymptoms: Swelling, pain, warmth, and skin discoloration in the affected extremity.Specific Presentations:SVC syndrome from superior vena cava thrombosisAbdominal pain from portal vein thrombosisHematuria from renal vein thrombosisNeurological symptoms... -
Welcome to PICU Doc On Call, where Dr. Pradip Kamat from Children’s Healthcare of Atlanta/Emory University School of Medicine and Dr. Rahul Damania from Cleveland Clinic Children’s Hospital delve into the intricacies of Pediatric Intensive Care Medicine. In this special episode of PICU Doc on Call shorts, we dissect the Alveolar Gas Equation—a fundamental concept in respiratory physiology with significant clinical relevance.
Key Concepts Covered:
Alveolar Gas Equation Demystified: Dr. Rahul explains the Alveolar Gas Equation, which calculates the partial pressure of oxygen in the alveoli (PAO2). This equation, PAO2 = FiO2 (Patm - PH2O) - (PaCO2/R), is essential in understanding hypoxemia and the dynamics of gas exchange in the lungs.Calculating PAO2: Using the Alveolar Gas Equation, the hosts demonstrate how to calculate PAO2 at sea level, emphasizing the influence of atmospheric pressure, fraction of inspired oxygen (FiO2), water vapor pressure, arterial carbon dioxide pressure (PaCO2), and respiratory quotient (R) on oxygenation.A-a Gradient and Hypoxemia: The A-a gradient, derived from the Alveolar Gas Equation, is discussed in the context of hypoxemia evaluation. Understanding the causes of hypoxemia, including ventilation/perfusion (V/Q) mismatch, anatomical shunt, diffusion defects, and hypoventilation, is crucial for clinical diagnosis and management.Clinical Scenarios and A-a Gradient Interpretation: Through a clinical scenario, the hosts elucidate how different conditions affect the A-a gradient and oxygenation, providing insights into respiratory pathophysiology and differential diagnosis.Clinical Implications and Management Strategies: The hosts highlight the clinical significance of the Alveolar Gas Equation in assessing oxygenation status, diagnosing gas exchange abnormalities, and tailoring respiratory management strategies in the pediatric intensive care setting.Key Takeaways:
Utility of the Alveolar Gas Equation: Understanding and applying the Alveolar Gas Equation is essential for evaluating oxygenation and diagnosing respiratory abnormalities.Interpreting A-a Gradient: A normal A-a gradient suggests alveolar hypoventilation as the likely cause of hypoxemia, whereas elevated gradients indicate other underlying pathologies.Clinical Relevance: Recognizing the clinical implications of the Alveolar Gas Equation aids in accurate diagnosis and optimal management of respiratory conditions in pediatric intensive care patients.Conclusion:
Join Dr. Kamat and Dr. Damania as they unravel the complexities of the Alveolar Gas Equation, providing valuable insights into respiratory physiology and its clinical applications. Don’t forget to subscribe, share your feedback, and visit picudoconcall.org for more educational content and resources.
References:
Fuhrman & Zimmerman - Textbook of Pediatric Critical Care Chapter: Physiology of the respiratory system. Chapter 42. Khemani et al. Pages 470-481Rogers textbook of Pediatric intensive care: Chapter 44.... -
Welcome to PICU Doc On Call, A Podcast Dedicated to Current and Aspiring Intensivists.
Hosts:Dr. Pradip Kamat: Children’s Healthcare of Atlanta/Emory University School of MedicineDr. Rahul Damania: Cleveland Clinic Children’s HospitalIntroduction:
Pediatric Intensive Care Unit (PICU) physicians passionate about medical education in the acute care pediatric settingEpisode focus: A case of a 23-month-old ex-28 week premie presenting with sudden high fever and rapidly rising ETCO2 during surgeryCase Presentation:
Presented by Dr. Rahul Damania23-month-old ex-28 week premie intubated during hernia repair surgeryNoticed rapidly rising ETCO2, unprovoked tachycardia, and elevated temperatureTransferred to PICU, exhibiting rigidity, clenched jaw, metabolic acidosis, and elevated lactate.Consideration of Malignant Hyperthermia (MH) crisisKey Points:
Elevated temperature, hypercapnia, metabolic acidosis, and unprovoked tachycardia raise concern for MHOrganized discussion on pathophysiology, clinical signs, symptoms, and managementMultiple Choice Question:
Diagnosis of MH crisis during scoliosis repairCorrect Answer: D) Sarcoplasmic reticulumDantrolene acts on the sarcoplasmic reticulum to inhibit calcium release, crucial in MH managementClinical Presentation of MH Crisis:
Tachycardia, acidosis, muscle stiffness, and hyperthermia are hallmark featuresPotential life-threatening complications underscore the urgency of recognition and treatmentTriggers and Pathophysiology of MH Crisis:
Triggered by inhalational agents and depolarizing neuromuscular blocking agentsPathophysiology involves defective Ryanodine receptor leading to uncontrolled calcium releaseDifferential Diagnosis:
Includes sepsis, thyroid storm, pheochromocytoma, and neuroleptic malignant syndromeDifferentiation from similar conditions crucial for accurate managementDiagnostic Approach:
High clinical suspicionGenetic testing (ryanodine... -
Show Introduction
Welcome to PICU Doc On Call, a podcast dedicated to current and aspiring intensivists.Hosted by Dr. Pradip Kamat and Dr. Rahul DamaniaCase Presentation
A 14-year-old female with a history of depression and oppositional defiant disorder presents with dizziness, slurring speech, and is pale appearance.The mother noticed symptoms of dizziness, stumbling, and sleepiness.The patient had a prior suicide attempt.Vital signs: HR 50 bpm, BP 75/40, GCS 10.The initial workup reveals hyperglycemia, and she is stabilized and admitted to the PICU.Key Aspects of Ingestion Work-up
History and physical exam are crucial.Stratify acute or chronic ingestions.Consider baseline medications and coingestants.Perform initial screening examination to identify immediate measures for stabilization.Diagnostic Studies
Pulse oximetry, continuous cardiac monitoring, ECG, capillary glucose measurement.Serum acetaminophen, ASA levelsConsider extended toxicology screen.Differentiating CCB vs. Beta-Blocker Overdose
ECG findings: PR interval prolongation and Bradydysrhythmia suggest CCB poisoning.Hyperglycemia in non-diabetic patients may indicate CCB overdoseApproach to CCB Overdose
Initial resuscitation and stabilizationABC approachConsult Poison Control CenterEmpiric use of glucagon, IV fluids, and vasopressorsConsideration of orogastric lavage and activated charcoalSpecific Medical Therapies
Vasopressors: norepinephrine/epinephrine infusionAtropine for bradycardiaIV calcium salts to overcome cardiovascular effectsHigh-dose insulin and dextrose for myocardial functionInvestigational therapies: methylene blue, lipid emulsionProcedures
Transvenous pacemaker placement if neededECMO in refractory... -
Hosts:
Pradip Kamat, Children’s Healthcare of Atlanta/Emory University School of MedicineRahul Damania, Cleveland Clinic Children’s HospitalIntroduction
Today, we discuss the case of an 8-month-old infant with severe bronchospasm and abnormal blood gas. We'll delve into the epidemiology, pathophysiology, and evidence-based management of acute bronchiolitis.
Case Summary
An 8-month-old infant presented to the ER with decreased alertness following worsening work of breathing, preceded by URI symptoms. The infant was intubated and transferred to the PICU, testing positive for RSV. Initial blood gas showed 6.8/125/-4, and CXR revealed massive hyperinflation. Vitals: HR 180, BP 75/45, SPO2 92% on 100% FIO2, RR 12 (prior to intubation), now around 16 on the ventilator, afebrile.
Discussion Points
Etiology & Pathogenesis: Bronchiolitis is primarily caused by RSV, with other viruses and bacteria playing a role. RSV bronchiolitis is the most common cause of hospitalization in infants, particularly in winter months. Immuno-pathology involves an unbalanced immune response and can lead to various extra-pulmonary manifestations.Diagnosis: Diagnosis is clinical, based on history and examination. Key signs include upper respiratory symptoms followed by lower respiratory distress. Blood gas, chest radiography, and viral testing are generally not recommended unless warranted by severe symptoms or clinical deterioration.Management Framework: For patients requiring PICU admission, focus on oxygenation and hydration. High-flow therapy and nasal continuous positive airway pressure (CPAP) can be used. Hydration and feeding support are crucial. Antibiotics, steroids, and bronchodilators are generally not recommended. Mechanical ventilation and ECMO may be necessary in severe cases.Immunoprophylaxis & Nosocomial Infection Prevention: Palivizumab and nirsevimab are used for RSV prevention in high-risk infants. Strict infection control measures, including hand hygiene and isolation, are essential to prevent nosocomial infections.Conclusion
RSV bronchiolitis is a common and potentially severe respiratory illness in infants. Management focuses on supportive care, with a careful balance between oxygenation and hydration. Immunoprophylaxis and infection control are crucial in preventing the spread of the virus.
Thank you for listening to our episode on acute bronchiolitis. Please subscribe, share your feedback, and visit our website at picudoconcall.org for more resources. Stay tuned for our next episode!
References
Rogers - Textbook of Pediatric Critical Care Chapter 49: Pneumonia and Bronchiolitis. De Carvalho et al. page 797-823
Reference 1: Dalziel, Stuart R; Haskell, Libby; O'Brien, Sharon; Borland, Meredith L; Plint, Amy C; Babl, Franz E; Oakley, Ed. Bronchiolitis. The Lancet. , 2022, Vol.400(10349), p.392-406. DOI: 10.1016/S0140-6736(22)01016-9; PMID:...
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Hosts:
Pradip Kamat, Children’s Healthcare of Atlanta/Emory University School of MedicineRahul Damania, Cleveland Clinic Children’s HospitalCase Introduction:
6-year-old patient admitted to PICU with severe pneumonia complicated by pediatric Acute Respiratory Distress Syndrome (pARDS).Presented with respiratory distress, hypoxemia, and significant respiratory acidosis.Required intubation and mechanical ventilation.Despite initial interventions, condition remained precarious with persistent hypercapnia.Physiology Concept: Dead Space
Defined as the volume of air that does not participate in gas exchange.Consists of anatomic dead space (large airways) and physiologic dead space (alveoli).Physiologic dead space reflects ventilation-perfusion mismatch.Pathological Dead Space:
Occurs due to conditions disrupting pulmonary blood flow or ventilation.Common in conditions like pulmonary embolism, severe pneumonia, or ARDS.Clinical Implications:
Increased dead space fraction (DSF) in PARDS is a prognostic factor linked to severity and mortality.Elevated DSF indicates worse lung injury and inefficient gas exchange.DSF can be calculated using the formula: DSF = (PaCO2 – PetCO2) / PaCO2.Practical Management:
Optimize Mechanical VentilationEnhance PerfusionConsider Positioning (e.g., prone positioning)Summary of Physiology Concepts:
Bohr equation for physiologic dead space.Importance of lung-protective ventilation strategies.Monitoring and trending dead space fraction.Strategies to improve airway patency and mucociliary clearance.Connect with us!
PICU Doc on Call provides concise explanations of critical concepts in pediatric intensive care.Feedback, subscriptions, and reviews are encouraged.Visit picudoconcall.org for episodes and Doc on Call infographics. - Visa fler
