WBM Emergency & Critical Care
WBM Emergency & Critical Care is an educational podcast covering emergency medicine, critical care, and acute care topics. Each episode uses physiology-based discussion and evidence-informed reviews to help clinicians and trainees better understand complex clinical concepts. It is produced by WhiteBoard Medicine as educational content, not as a substitute for independent clinical judgment. The show is aimed at healthcare professionals and trainees working in acute care settings.
Episodes
#335 Venous Hemodynamics Explained: Stressed vs Unstressed Volume, CVP, IVC & VExUS
Venous hemodynamics connects stressed and unstressed blood volume with venous return, right atrial pressure, and systemic venous congestion. This episode reviews these relationships alongside central venous pressure (CVP), inferior vena cava (IVC) ultrasound, and venous excess ultrasound (VExUS), emphasizing their interpretation and limitations in fluid assessment.
Topics covered include:
• Stress
#334 Valvular Emergencies Masterclass: Aortic & Mitral Stenosis and Regurgitation
Decompensated aortic and mitral valve disease can present with pulmonary edema, impaired cardiac output, and cardiogenic shock. This masterclass reviews aortic stenosis, aortic regurgitation, mitral stenosis, and mitral regurgitation, connecting their distinct hemodynamics with clinical recognition and emergency management.
Topics covered include:
• Aortic stenosis: outflow obstruction and decompe
#333 Mitral Stenosis & Mitral Regurgitation Masterclass: Decompensation, Hemodynamics & Management
Decompensated mitral stenosis and mitral regurgitation require distinct approaches to hemodynamic assessment and stabilization. This comprehensive masterclass reviews the physiology, recognition, and emergency management of both conditions, comparing their effects on ventricular filling, left atrial pressure, pulmonary congestion, and forward cardiac output.
Topics covered include:
• Mitral stenos
#332 Decompensating Mitral Regurgitation Explained: Hemodynamics, Recognition & Emergency Management
Decompensating mitral regurgitation requires recognition of pulmonary congestion, impaired forward cardiac output, and hemodynamic instability. This episode reviews mitral regurgitation physiology, acute versus chronic presentations, and emergency management considerations, connecting valvular dysfunction with pulmonary edema and cardiogenic shock.
Topics covered include:
• Mitral regurgitation an
#331 Decompensated Mitral Stenosis Explained: Hemodynamics, Recognition & Emergency Management
Decompensated mitral stenosis presents important challenges in the assessment and management of acute valvular heart disease. This episode reviews mitral stenosis physiology, mechanisms of hemodynamic deterioration, and emergency management considerations, with attention to pulmonary congestion, heart rate, rhythm, and cardiac output.
Topics covered include:
• Mitral stenosis anatomy and pathophys
#330 Oxygen Physiology Masterclass: PaO2, SaO2, Oxygen Content, Oxyhemoglobin Dissociation Curve
Oxygen physiology is essential for understanding hypoxemia, oxygen saturation, oxygen content, tissue oxygen delivery, and the oxyhemoglobin dissociation curve. In this masterclass episode, we review PaO2, SaO2, SpO2, arterial oxygen content, hemoglobin-bound oxygen, dissolved oxygen, oxygen delivery, and how the oxyhemoglobin dissociation curve ties these concepts together.
Topics covered include
#329 Decompensating Aortic Valvulopathies Masterclass: Aortic Stenosis and Aortic Regurgitation
Decompensating aortic valve disease can lead to pulmonary edema, hypotension, cardiogenic shock, arrhythmias, and rapid hemodynamic collapse. In this masterclass episode, we compare severe aortic stenosis and severe aortic regurgitation, focusing on physiology, bedside recognition, hemodynamic differences, emergency management principles, and key clinical pitfalls.
Topics covered include:
• What a
#328 Peak Pressure vs Plateau Pressure Masterclass: Airway Resistance, Lung Compliance, and Pressure
Peak pressure and plateau pressure are foundational concepts in mechanical ventilation and ventilator troubleshooting. In this masterclass episode, we review airway resistance and lung compliance, then take a deeper dive into peak pressure, plateau pressure, ventilator pressure interpretation, and how these values help identify obstructive physiology, reduced compliance, and ventilator-related pro
#327 Airway Resistance & Lung Compliance Explained: Peak Pressure, Plateau Pressure, Ventilator Basics
Airway resistance and lung compliance are foundational concepts for understanding mechanical ventilation, peak pressure, plateau pressure, and ventilator troubleshooting. In this episode, we review what airway resistance and lung compliance mean, how they affect ventilator pressures, and how to interpret changes in peak and plateau pressure at the bedside.
Topics covered include:
• What airway res
#326 PaO2 vs Oxygen Saturation vs Oxygen Content Explained: Key Differences in Oxygenation
PaO2, oxygen saturation, and oxygen content are related but very different ways of understanding oxygenation and oxygen delivery. In this episode, we compare PaO2, SpO2/SaO2, and arterial oxygen content, focusing on what each value means, how they are measured, how they relate to hemoglobin, and why normal oxygen saturation does not always mean normal oxygen delivery.
Topics covered include:
• Wha
#325 Decompensating Aortic Regurgitation Explained: Recognition, Hemodynamics, and Emergency Management
Decompensating aortic regurgitation is a high-risk clinical scenario where severe aortic valve insufficiency can lead to pulmonary edema, hypotension, cardiogenic shock, and rapid hemodynamic collapse. In this episode, we review the physiology of aortic regurgitation, how acute and chronic aortic regurgitation can decompensate, key bedside recognition features, and the principles of emergency and
#324 Decompensating Aortic Stenosis Explained: Recognition, Hemodynamics, and Emergency Management
Decompensating aortic stenosis is a high-risk clinical scenario where fixed left ventricular outflow obstruction can lead to hypotension, pulmonary edema, cardiogenic shock, arrhythmias, and rapid hemodynamic collapse. In this episode, we review the physiology of severe aortic stenosis, how decompensation develops, key bedside recognition features, and the principles of emergency and critical care
#323 Mechanical Ventilation Masterclass: Optimizing PEEP with Driving Pressure and Stress Index
PEEP optimization is a key part of lung-protective mechanical ventilation, especially when managing hypoxemia, atelectasis, ARDS, overdistension, tidal recruitment, and ventilator-induced lung injury. In this episode, we review how driving pressure and stress index can help guide PEEP decisions and support a more physiologic approach to ventilator management.
Topics covered include:
• What PEEP is
#322 Refractory Shock Masterclass: Nitric Oxide Scavengers, Methylene Blue, and Hydroxocobalamin
Methylene blue and hydroxocobalamin are rescue therapies sometimes considered for vasoplegic shock and refractory vasodilation. In this episode, we compare methylene blue with hydroxocobalamin, focusing on mechanisms of action, nitric oxide-mediated vasodilation, hemodynamic effects, dosing considerations, adverse effects, and practical clinical use.
Topics covered include:
• What vasoplegic shock
#321 Driving Pressure vs Stress Index Compared: Mechanical Ventilation, Alveolar Distention, and Waveform
Driving pressure and stress index are two important concepts used to think about lung stress, lung-protective ventilation, overdistension, tidal recruitment, and ventilator-induced lung injury. In this episode, we compare driving pressure with stress index, focusing on what each measurement means, how they are interpreted, how they relate to compliance and ventilator waveforms, and how they can in
#320 Methylene Blue vs Hydroxocobalamin Compared: Vasoplegic Shock, Mechanisms, Adverse Effects, and Use
Methylene blue and hydroxocobalamin are rescue therapies sometimes considered for vasoplegic shock and refractory vasodilation. In this episode, we compare methylene blue with hydroxocobalamin, focusing on mechanisms of action, nitric oxide-mediated vasodilation, hemodynamic effects, dosing considerations, adverse effects, and practical clinical use.
Topics covered include:
• What vasoplegic shock
#319 Stress Index Explained: Mechanical Ventilation, Alveolar Distention, and Pressure Time Waveform
The stress index is a ventilator waveform concept used to assess lung stress, overdistension, and tidal recruitment during mechanical ventilation. In this episode, we review what the stress index is, how it is interpreted on ventilator waveforms, how it relates to lung-protective ventilation, and how clinicians use it to think about PEEP, tidal volume, compliance, and ventilator-induced lung injur
#318 Norepinephrine Masterclass: Foundations, Clinical Scenarios, Dosing, Bedside Applications
Norepinephrine is one of the most important vasopressors in emergency medicine and critical care. In this masterclass episode, we review the foundations of norepinephrine, including mechanism of action, receptor effects, hemodynamics, dosing, adverse effects, and monitoring, then take a deeper dive into clinical scenarios and bedside applications where norepinephrine is commonly used.
Topics cover
#317 Dobutamine vs Milrinone Masterclass: Mechanisms, Hemodynamics, Dosing, And Clinical Use
Dobutamine and milrinone are two important inotropes used in heart failure, cardiogenic shock, low cardiac output states, and critical care. In this masterclass episode, we compare dobutamine and milrinone with a focus on mechanisms of action, receptor effects, hemodynamics, dosing considerations, adverse effects, monitoring, and practical bedside use.
Topics covered include:
• What inotropes are
#316 Norepinephrine Explained: Principles, Clinical Applications, and Unique Scenarios
Norepinephrine is one of the most important vasopressors in emergency medicine and critical care. In this episode, we review norepinephrine with a focus on core principles, clinical applications, dosing, hemodynamic effects, receptor physiology, adverse effects, and unique bedside scenarios where norepinephrine is commonly considered.
Topics covered include:
• What norepinephrine is
• Norepinephri
#315 Dobutamine vs Milrinone Explained: Key Differences, Hemodynamics, and Clinical Use
Dobutamine and milrinone are two commonly used inotropes with important differences in mechanism, hemodynamics, dosing, adverse effects, and clinical use. In this episode, we review the key differences between dobutamine and milrinone and how to think through inotrope selection at the bedside.
Topics covered include:
• Dobutamine mechanism of action
• Milrinone mechanism of action
• Beta-1 agonism
#314 Masterclass Oxygen Hemoglobin Dissociation Curve: Basics, Shifts, Bohr, Oxygen Content, Applications
The oxygen-hemoglobin dissociation curve is a foundational concept for understanding oxygen binding, oxygen unloading, hemoglobin saturation, P50, left and right shifts, oxygen content, oxygen delivery, and clinical oxygenation. In this masterclass episode, we bring together the core physiology and advanced applications of the oxygen-hemoglobin dissociation curve, including the Bohr effect, 2,3-BP
#313 3 Of The Most Common ICU Vasopressors Explained - Norepinephrine, Vasopressin, and Epinephrine
Norepinephrine, vasopressin, and epinephrine are three of the most commonly used vasopressors in emergency medicine and critical care. In this episode, we review how these ICU vasopressors work, their receptor effects, hemodynamic profiles, common indications, dosing considerations, adverse effects, and practical bedside differences.
Topics covered include:
• What vasopressors are
• Vasopressors a
#312 12 Lead ECG Fundamentals Masterclass | Axis, Intervals, Bundle Branch Blocks, LVH
The 12-lead ECG is a foundational tool for evaluating cardiac rhythm, conduction, ischemia, chamber enlargement, and structural heart disease. In this episode, we review a structured approach to ECG interpretation, including cardiac axis, PR/QRS/QT intervals, bundle branch blocks, left ventricular hypertrophy, and practical pattern recognition.
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#311 Tumor Lysis Syndrome Explained: Pathophysiology, Diagnosis, Prevention, and Treatment
Tumor lysis syndrome is an oncologic emergency caused by rapid tumor cell breakdown and release of intracellular contents into the bloodstream. In this episode, we review the pathophysiology, risk factors, laboratory abnormalities, diagnostic criteria, prevention, and treatment of tumor lysis syndrome.
Topics covered include:
• What tumor lysis syndrome is
• Why tumor lysis syndrome occurs
• High-
#310 Oxygen Hemoglobin Dissociation Curve Advanced: Oxygen Content, Delivery, Bohr Effect, 2,3-BPG, Shock
The oxygen-hemoglobin dissociation curve is a foundational concept for understanding oxygen binding, oxygen unloading, hypoxemia, and tissue oxygen delivery. In this episode, we review what the oxygen-hemoglobin dissociation curve represents, how hemoglobin saturation relates to PaO2, what P50 means, and how left and right shifts change hemoglobin’s affinity for oxygen.
Topics covered include:
• W
#309 Oxygen Hemoglobin Dissociation Curve Basics Explained: Left Shift, Right Shift, P50, and More
The oxygen-hemoglobin dissociation curve is a foundational concept for understanding oxygen binding, oxygen unloading, hypoxemia, and tissue oxygen delivery. In this episode, we review what the oxygen-hemoglobin dissociation curve represents, how hemoglobin saturation relates to PaO2, what P50 means, and how left and right shifts change hemoglobin’s affinity for oxygen.
Topics covered include:
• W
#308 Mechanical Ventilation Modes Masterclass - Volume Control, Pressure Control, Scalars, and Comparison
Volume control and pressure control are two of the most important mechanical ventilation modes used in critical care. In this episode, we review the physiologic principles behind both modes, explain how ventilator settings influence pressure, flow, and tidal volume, interpret ventilator scalars and waveforms, and compare the advantages, limitations, and bedside applications of each mode.
Topics co
#307 Dead Space Ventilation Explained: Anatomic, Alveolar, Physiologic, Applications (V/Q and Shunt)
Dead space ventilation is a foundational concept in pulmonary physiology and mechanical ventilation. In this episode, we review anatomic dead space, alveolar dead space, physiologic dead space, and how dead space relates to ventilation-perfusion mismatch, shunt physiology, CO2 clearance, respiratory failure, and bedside clinical interpretation.
Topics covered include:
• What dead space ventilation
#306 Volume Control vs Pressure Control Ventilation Explained: Principles, Settings, and Comparison
Volume control and pressure control are two foundational modes of mechanical ventilation. In this episode, we compare volume control ventilation with pressure control ventilation, focusing on core principles, ventilator settings, pressure and flow patterns, tidal volume delivery, and practical bedside differences.
Topics covered include:
• What volume control ventilation is
• What pressure control
#305 Decompensated Cirrhosis Explained: Variceal Bleeding, SBP, HRS, and Hepatic Encephalopathy
Decompensated cirrhosis is defined by the development of major complications of advanced liver disease and portal hypertension. In this episode, we review the core complications of decompensated cirrhosis, including esophageal variceal bleeding, spontaneous bacterial peritonitis, hepatorenal syndrome, and hepatic encephalopathy.
Topics covered include:
• What decompensated cirrhosis means
• Portal
#304 Pulmonary Physiology Masterclass: V/Q Mismatch, Shunting, and Key Comparisons
Pulmonary physiology is essential for understanding hypoxemia, respiratory failure, oxygenation, V/Q mismatch, and shunt physiology. In this episode, we review ventilation-perfusion relationships, V/Q mismatch, pulmonary shunting, and the key differences between these mechanisms of impaired oxygenation.
Topics covered include:
• Ventilation and perfusion basics
• Normal V/Q relationships in the lu
#303 Hepatopulmonary Syndrome vs Portopulmonary Hypertension Explained
Hepatopulmonary syndrome and portopulmonary hypertension are two important pulmonary vascular complications of liver disease and portal hypertension. In this episode, we compare hepatopulmonary syndrome with portopulmonary hypertension, focusing on pathophysiology, clinical presentation, diagnostic evaluation, hemodynamics, treatment, and liver transplant considerations.
Topics covered include:
•
#302 Spontaneous Bacterial Peritonitis Explained: Diagnosis, Treatment, and Prophylaxis
Spontaneous bacterial peritonitis, or SBP, is a serious infection of ascitic fluid that occurs in patients with cirrhosis and portal hypertension. In this episode, we review the pathophysiology, clinical presentation, diagnostic evaluation, treatment, albumin use, and prophylaxis of spontaneous bacterial peritonitis.
Topics covered include:
• What spontaneous bacterial peritonitis is
• Why SBP occ
#301 Hepatorenal Syndrome Explained: Pathophysiology, Diagnosis, and Treatment
Hepatorenal syndrome is a serious kidney complication of advanced liver disease and portal hypertension. In this episode, we review the pathophysiology, diagnostic criteria, clinical evaluation, differential diagnosis, and treatment of hepatorenal syndrome.
Topics covered include:
• What hepatorenal syndrome is
• The relationship between cirrhosis, portal hypertension, and kidney dysfunction
• Spl
#300 V/Q Mismatch vs Pulmonary Shunt Explained: Key Differences in Hypoxemia
V/Q mismatch and pulmonary shunt are two major physiologic mechanisms of hypoxemia, but they affect oxygenation in different ways. In this episode, we compare ventilation-perfusion mismatch with pulmonary shunt physiology, focusing on how each develops, how they differ clinically, and why their response to supplemental oxygen is different.
Topics covered include:
• What V/Q mismatch means
• What p
#299 Pulmonary Shunt Physiology Explained: Hypoxemia, V/Q Mismatch, and Oxygen Response
Pulmonary shunt is an important physiologic mechanism of hypoxemia and respiratory failure. In this episode, we review what a pulmonary shunt is, how shunt physiology affects oxygenation, how it differs from V/Q mismatch and dead space ventilation, and why shunt physiology often responds poorly to supplemental oxygen.
Topics covered include:
• What pulmonary shunt means
• Normal ventilation and pe
#298 Portopulmonary Hypertension Explained: Pathophysiology, Diagnosis, and Treatment
Portopulmonary hypertension is an important pulmonary vascular complication of portal hypertension and advanced liver disease. In this episode, we review the pathophysiology, clinical presentation, diagnostic evaluation, hemodynamic criteria, and treatment of portopulmonary hypertension.
Topics covered include:
• What portopulmonary hypertension is
• The relationship between portal hypertension an
#297 Hemoptysis Explained: Evaluation, Causes, and Emergency Management
Hemoptysis is an important clinical presentation that can range from minor blood-streaked sputum to life-threatening airway and respiratory failure. In this episode, we review the causes, initial evaluation, severity assessment, diagnostic approach, and management of hemoptysis.
Topics covered include:
• What hemoptysis is
• Differentiating hemoptysis from hematemesis and upper airway bleeding
• C
#296 Physiology of V/Q Mismatch Explained: Ventilation, Perfusion, High vs Low VQ, and Shunt
V/Q mismatch is one of the most important physiologic mechanisms of hypoxemia and respiratory failure. In this episode, we review the physiology of ventilation-perfusion matching, high V/Q states, low V/Q states, shunt physiology, dead space ventilation, oxygen response, and the clinical relevance of V/Q mismatch.
Topics covered include:
• What V/Q mismatch means
• Ventilation and perfusion basics
#295 Acid-Base & Blood Gas Masterclass: Acid-Base, Anion Gap, Delta Gap, ABG & VBG
Acid-base interpretation and blood gas analysis are core skills for evaluating metabolic acidosis, metabolic alkalosis, respiratory acidosis, respiratory alkalosis, anion gap disorders, mixed acid-base disorders, ABGs, and VBGs. In this episode, we review a structured approach to acid-base physiology, anion gap interpretation, delta gap analysis, and blood gas interpretation.
Topics covered includ
#294 ICU Rounds Masterclass | Ventilators, ABGs, Feeding, Prophylaxis and Extubation
ICU rounds require a structured approach to respiratory failure, ventilator management, arterial blood gases, nutrition, prophylaxis, sedation, and extubation readiness. In this episode, we review a practical ICU rounds framework for evaluating critically ill patients and organizing daily decision-making at the bedside.
Topics covered include:
• How to present mechanical ventilation on ICU rounds
#293 Hepatopulmonary Syndrome Explained: Pathophysiology, Diagnosis, and Treatment
Hepatopulmonary syndrome is an important pulmonary vascular complication of liver disease and portal hypertension. In this episode, we review the pathophysiology, clinical presentation, diagnostic evaluation, and treatment of hepatopulmonary syndrome.
Topics covered include:
• What hepatopulmonary syndrome is
• The relationship between liver disease, portal hypertension, and hypoxemia
• Intrapulmo
#292 TIPS Procedure Explained: Transjugular Intrahepatic Portosystemic Shunt for Portal Hypertension
TIPS, or transjugular intrahepatic portosystemic shunt, is an important procedure used in the management of complications related to portal hypertension. In this episode, we review what TIPS is, how it works, why it is performed, and the major clinical considerations surrounding TIPS placement.
Topics covered include:
• What TIPS is and what the procedure creates
• Portal hypertension and why redu
#291 Upper vs Lower GI Bleeds | Diagnosis, Presentation, and Key Differences
Upper GI bleeding and lower GI bleeding are common causes of emergency department visits, hospital admissions, and critical care consultations. While both can present with gastrointestinal hemorrhage, the underlying causes, clinical presentation, diagnostic evaluation, and management strategies often differ significantly.
In this episode, we compare upper versus lower GI bleeding and discuss the k
#290 Unstable Upper GI Bleeding Explained | Resuscitation, Diagnosis, and Hemorrhage Control
Upper gastrointestinal bleeding is a common medical emergency that can rapidly progress to hemorrhagic shock, massive transfusion, and death if not recognized and managed appropriately. In this episode, we review the resuscitation, diagnostic evaluation, and hemorrhage control strategies for unstable upper GI bleeding from an emergency medicine and critical care perspective.
Topics covered include
#289 Unstable Lower GI Bleeding Explained | Resuscitation, Diagnosis, and Hemorrhage Control
Unstable lower gastrointestinal bleeding is a high-acuity emergency that can rapidly progress to hemorrhagic shock, massive transfusion, and death if not recognized and managed appropriately. In this episode, we review the resuscitation, diagnostic evaluation, and definitive management of unstable lower GI bleeding from an emergency medicine and critical care perspective.
Topics covered include re
#288 Hepatic Encephalopathy Explained | Pathophysiology, Diagnosis, and Management
Hepatic encephalopathy is one of the most common and clinically important complications of advanced liver disease and cirrhosis. It is a frequent cause of altered mental status encountered by emergency physicians, intensivists, hospitalists, gastroenterologists, hepatologists, and other healthcare professionals caring for critically ill patients.
In this episode, we review the pathophysiology of h
#287 Esophageal Variceal Bleeding Explained: Diagnosis, Resuscitation, Endoscopy & Critical Management
Esophageal variceal bleeding is one of the most dangerous gastrointestinal emergencies encountered in emergency medicine, critical care medicine, hospital medicine, and gastroenterology. Rapid recognition and appropriate early management can significantly impact outcomes, making this a must-know topic for healthcare professionals caring for acutely ill patients.
In this episode, we review the path
#286 Mechanical Circulatory Support Masterclass | IABP, ECMO, LVAD & Shock Support
Mechanical circulatory support devices are increasingly used to manage cardiogenic shock, advanced heart failure, cardiac arrest, and severe cardiopulmonary failure. Yet many clinicians struggle to understand how devices such as intra-aortic balloon pumps (IABP), extracorporeal membrane oxygenation (ECMO), and left ventricular assist devices (LVADs) fit together within a broader framework of criti
#285 ICU Bedside Monitoring Masterclass | Arterial Lines, CVP, ETCO2, Waveforms & Swan Ganz
Monitors are everywhere in the ICU, emergency department, operating room, and procedural areas—but understanding what those monitors are actually telling you is a completely different skill.
In this ICU Bedside Monitoring Masterclass, we bring together some of the most important concepts in invasive hemodynamic monitoring and waveform interpretation. We cover arterial lines, central venous pressur
#284 Respiratory Support Masterclass: From Nasal Cannula to AVAPS
Respiratory Support Masterclass: From Nasal Cannula to AVAPS
Respiratory support exists on a spectrum—from conventional oxygen therapy to advanced noninvasive ventilation. Understanding how and when to escalate support is a foundational skill in emergency medicine, critical care medicine, respiratory therapy, and hospital medicine. Selecting the appropriate respiratory support modality can improve
#283 Noninvasive Ventilation Masterclass: BPAP, AVAPS & Key Differences Explained
Noninvasive Ventilation Masterclass: BPAP, AVAPS & Key Differences Explained
Noninvasive ventilation (NIV) is a cornerstone of respiratory support in emergency medicine, critical care medicine, respiratory therapy, and hospital medicine. Understanding how BPAP and AVAPS work, when to use each modality, and how to optimize settings can help clinicians manage respiratory failure while potentiall
#282 Oxygen Delivery Devices Explained: Nasal Cannula, Face Mask, HFNC & BPAP
Oxygen Delivery Devices Explained: Nasal Cannula, Face Mask, HFNC & BPAP
Choosing the appropriate oxygen delivery device is a fundamental skill in emergency medicine, critical care medicine, respiratory therapy, and hospital medicine. From low-flow oxygen therapy to advanced noninvasive respiratory support, understanding how each device works can help clinicians optimize oxygenation while reco
#281 High Flow Nasal Cannula (HFNC) Explained: Physiology, Settings & Clinical Applications
High-Flow Nasal Cannula (HFNC) Explained: Physiology, Settings & Clinical Applications
High-Flow Nasal Cannula (HFNC) has become one of the most important respiratory support modalities in emergency medicine, critical care medicine, respiratory therapy, and hospital medicine. By delivering heated, humidified oxygen at high flow rates, HFNC can improve oxygenation, reduce work of breathing, was
#280 AVAPS vs BPAP: Key Differences, Settings & Clinical Applications
AVAPS vs BPAP: Key Differences, Settings & Clinical Applications
BPAP and AVAPS are two commonly used forms of noninvasive ventilation, but understanding how they differ and when each mode may be appropriate can be challenging. While BPAP delivers fixed pressure support through preset IPAP and EPAP settings, AVAPS adds a target tidal volume and automatically adjusts inspiratory pressure suppor
#279 AVAPS Explained: Indications, Settings, Physiology & Clinical Applications
AVAPS Explained: Indications, Settings, Physiology & Clinical Applications
Average Volume-Assured Pressure Support (AVAPS) is an advanced mode of noninvasive ventilation that combines pressure support ventilation with a target tidal volume. By automatically adjusting inspiratory pressure support to achieve a desired tidal volume, AVAPS can help provide more consistent ventilation in patients w
#278 BPAP Explained: Indications, Settings, Troubleshooting & Clinical Applications
BPAP Explained: Indications, Settings, Troubleshooting & Clinical Applications
BPAP (Bilevel Positive Airway Pressure) is one of the most commonly used forms of noninvasive ventilation in emergency medicine, critical care medicine, respiratory therapy, and hospital medicine. Understanding when to use BPAP, how to adjust settings, and how to recognize treatment failure is essential for clinicia
#277 COPD Exacerbation Explained- Oxygen, Bronchodilators, Steroids & Ventilation
COPD Exacerbation Explained: Oxygen, Bronchodilators, Steroids & Ventilation
Acute exacerbations of COPD are among the most common causes of emergency department visits, hospital admissions, respiratory failure, and ICU admissions. Understanding the pathophysiology of COPD exacerbations and the principles of respiratory support is essential for clinicians caring for critically ill patients.
In
#276 ICU Toxicology Masterclass: Beta Blockers, CCBs, Salicylates & Acetaminophen
Toxicologic emergencies are common in emergency medicine and critical care, yet the underlying physiology and management strategies can become complex quickly. Early recognition and aggressive supportive care are often critical to improving outcomes.
In this ICU toxicology masterclass, we review four high-yield toxicologic emergencies every clinician should recognize:
• Beta blocker toxicity
• Cal
#275 Toxicology Deep Dive: Serotonin Syndrome and Neuroleptic Malignant Syndrome (NMS) Explained
Serotonin syndrome and neuroleptic malignant syndrome (NMS) are two life-threatening toxicologic emergencies that every emergency medicine physician, intensivist, hospitalist, nurse, pharmacist, and trainee should recognize early.
In this toxicology deep dive, we review:
• Neuroleptic malignant syndrome (NMS)
• Serotonin syndrome
• Key clinical differences
• Pathophysiology
• Causative medications
#274 ICU Feeding Explained: Enteral, Parenteral, Trophic & Full Feeds
Nutrition support is a core component of modern critical care medicine, yet ICU feeding strategies can become confusing quickly. When should we use enteral nutrition vs parenteral nutrition? What are trophic feeds? Should we check gastric residual volumes? How do we approach aspiration risk?
In this episode, we break down the fundamentals of ICU nutrition and feeding strategies including:
• Entera
#273 Serotonin Syndrome vs Neuroleptic Malignant Syndrome Explained - Quick Comparison
Serotonin syndrome and neuroleptic malignant syndrome (NMS) are two life-threatening toxicologic emergencies that can appear very similar at the bedside — but recognizing the key differences is critical for emergency department and ICU management.
In this episode, we focus on the high-yield differences between serotonin syndrome and neuroleptic malignant syndrome including:
• Clonus vs rigidity
•
#272 Serotonin Syndrome - Diagnosis, Pathophysiology & Treatment
Serotonin syndrome is a potentially life-threatening toxicologic emergency caused by excess serotonergic activity. Early recognition is critical in the emergency department, ICU, inpatient wards, and prehospital settings.
In this episode, we review the fundamentals of serotonin syndrome including:
• Pathophysiology
• Serotonergic medications
• Hyperthermia
• Clonus and hyperreflexia
• Neuromuscula
#271 Neuroleptic Malignant Syndrome - Pathophysiology, Diagnosis & Treatment
Neuroleptic malignant syndrome (NMS) is a rare but life-threatening toxicologic emergency associated with dopamine blockade and antipsychotic medications. Early recognition is critical in the emergency department, ICU, inpatient wards, and perioperative settings.
In this episode, we review the fundamentals of neuroleptic malignant syndrome including:
• Pathophysiology
• Dopamine blockade
• Common
#270 Salicylate Toxicity Explained Clearly | Acid Base Disorders, Intubation Pitfalls & ICU Management
Salicylate toxicity is one of the most important acid-base and toxicologic emergencies encountered in emergency medicine, critical care, and hospital medicine. In this episode, we break down salicylate poisoning from the ground up including salicylate pharmacology, acid-base physiology, respiratory alkalosis, metabolic acidosis, sodium bicarbonate therapy, hemodialysis indications, airway manageme
#269 Opioid Toxicity Explained | Recognition, Naloxone & Critical Care Management
Opioid toxicity remains one of the most important toxicologic emergencies encountered in emergency medicine, critical care, EMS, and hospital medicine. In this episode, we break down opioid overdose from the ground up including opioid pharmacology, respiratory depression physiology, recognition of the opioid toxidrome, naloxone administration, airway management, ventilator considerations, post-rev
#268 Frank Starling Curve and Cardiac Output - Cardiac Physiology Masterclass
The Frank-Starling curve is one of the most important concepts in cardiac physiology—and one of the most clinically useful in critical care.
In this episode, we break down the Frank-Starling relationship and connect it directly to cardiac output, so you can understand how preload affects stroke volume and how this translates to real bedside decision-making.
We cover:
What the Frank-Starling curv
#267 AutoPEEP and I:E Ratio Explained - Mastering Mechanical Ventilation
AutoPEEP is one of the most important—and most commonly missed—problems in mechanically ventilated patients.
In this episode, we break down AutoPEEP and the I:E ratio in a clear, practical way so you can understand how they impact ventilation, gas exchange, and patient outcomes in the ICU and emergency department.
We cover:
What AutoPEEP is and why it occurs
How the I:E ratio contributes to br
#266 Volume Control vs Pressure Control - Settings, Scalars, and Clinical Application Explained
Volume control or pressure control—how do you actually choose the right ventilator mode in real clinical practice?
In this episode, we break down volume control and pressure control ventilation step-by-step, focusing on settings, scalars, and how to apply both modes at the bedside in the ICU and emergency department.
We cover:
What you set vs what is guaranteed in volume vs pressure control
Ke
#265 West Zones of the Lung Explained - Perfusion, Ventilation & Clinical Significance
West zones of the lung are fundamental to understanding how ventilation and perfusion interact in both normal physiology and critical illness.
In this episode, we break down the West zones (Zone 1, Zone 2, and Zone 3) in a simple, clinically relevant way so you can understand how blood flow is distributed throughout the lung—and why it matters at the bedside.
We cover:
The physiology behind the
#264 ABG, VBG, and Comparison Explained: Complete Breakdown + Clinical Comparison
Arterial blood gas (ABG) or venous blood gas (VBG)—what’s the difference, and when should you actually use each?
In this episode, we walk through a complete breakdown of ABG and VBG, followed by a direct clinical comparison so you can confidently decide which test to use at the bedside.
We cover:
What an ABG measures and how to interpret it
What a VBG tells you and how it differs
Key differe
#263 Cardiac Output Explained: From Physiology to Cardiogenic Shock Diagnosis & Management
Cardiac output is one of the most important—and most misunderstood—concepts in critical care.
In this episode, we break down cardiac output from first principles and connect it directly to cardiogenic shock, so you can understand not just the numbers—but how to apply them at the bedside.
We cover:
The cardiac output equation (CO = HR × SV) and what it actually means
How preload, contractility,
#262 Mechanical Ventilation Basics - I:E Ratio Made Simple for ICU & Emergency Care
The I:E ratio is one of the most important—and most misunderstood—settings in mechanical ventilation.
In this episode, we break down the inspiratory-to-expiratory (I:E) ratio in a simple, practical way so you can understand how it impacts ventilation, gas exchange, and patient outcomes in the ICU and emergency department.
We cover:
What the I:E ratio actually represents
How it affects airflow,
#261 ABG vs VBG Explained: Key Differences, Accuracy, and When to Use Each (Critical Care Guide)
Arterial blood gas (ABG) or venous blood gas (VBG)—which should you actually use in clinical practice?
In this episode, we break down the key differences between ABG and VBG in a clear, practical way so you can understand when each test is appropriate in emergency and critical care settings. While ABGs are often considered the gold standard, VBGs can provide clinically useful information in many s
#260 First Month in the ICU | Mechanical Ventilation Made Simple (Full Crash Course)
In this episode, we break down mechanical ventilation from start to finish—designed specifically for your first week in the ICU.
Mechanical ventilation can feel overwhelming early on, with multiple settings, modes, alarms, and physiologic concepts all happening at once. In this episode, we walk through a structured, bedside-relevant framework to help you understand what actually matters when manag
#259 Respiratory Failure Types 1–4 Explained | Hypoxemic vs Hypercapnic Made Simple
Respiratory failure is one of the most common and high-stakes problems in emergency and critical care medicine — but understanding the different types can be confusing.
In this episode, we break down Type 1–4 respiratory failure into a simple, structured framework you can actually use at the bedside. We focus on the key distinction between hypoxemic vs hypercapnic respiratory failure, how to inter
#258 Mechanical Ventilator Settings Explained | PEEP, FiO₂, RR & Tidal Volume Made Simple
Mechanical ventilation is a core skill in critical care and emergency medicine—but the ventilator can feel overwhelming when you’re first learning it.
In this episode, we break down the essential ventilator settings—PEEP, FiO₂, respiratory rate (RR), and tidal volume (TV)—in a way that’s simple, practical, and directly applicable at the bedside.
We focus on building a clear mental model of how the
#257 Stressed Vs Unstressed Volume Explained | Venous Return, MSFP & Shock
Understanding stressed vs unstressed volume is one of the most important—and most misunderstood—concepts in hemodynamics and shock.
In this episode, we break down how venous capacitance, mean systemic filling pressure (MSFP), and venous returnactually work, and why they matter for managing critically ill patients in the ICU and emergency department.
We focus on translating physiology into practica
#256 Non Invasive Fluid Assessment Explained | IVC, VExUS & Passive Leg Raise ICU Guide
In this episode, we break down non-invasive fluid assessment at the bedside, focusing on IVC ultrasound, VExUS (Venous Excess Ultrasound Score), and the passive leg raise (PLR).
We walk through how to evaluate fluid responsiveness vs fluid tolerance, when each tool works (and when it fails), and how to integrate these approaches into a practical, physiology-based framework for critically ill patie
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