WBM Emergency & Critical Care

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:• Stressed versus unstressed blood volume• Venous capacitance and vascular tone• Mean systemic filling pressure and venous return• The relationship between CVP and right atrial pressure• Interpreting CVP in the context of cardiac function• IVC ultrasound and respiratory variation• VExUS assessment of systemic venous congestion• Integrating pressure measurements and ultrasound findings• Distinguishing congestion from fluid responsiveness• Effects of right ventricular function and mechanical ventilation• Limitations of individual markers of volume status• Applying venous physiology to hemodynamic assessment
The discussion connects foundational venous physiology with bedside assessment, examining how CVP, IVC ultrasound, and VExUS provide complementary information about the circulation.
🎥 Watch the Full Video on YouTubehttps://www.youtube.com/watch?v=z4RSoEpkt7A
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⚠️ Educational Disclaimer:This content is for educational purposes only and is not a substitute for professional medical advice, clinical judgment, or individualized patient care. Never disregard professional medical advice or delay seeking it because of this content.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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 decompensation• Aortic regurgitation: regurgitant flow and ventricular loading• Mitral stenosis: impaired ventricular filling and pulmonary congestion• Mitral regurgitation: left atrial pressure and reduced forward flow• Acute presentations versus decompensated chronic valve disease• Precipitating factors for clinical deterioration• Preload, afterload, heart rate, rhythm, and cardiac output• Pulmonary edema, pulmonary hypertension, and cardiogenic shock• Clinical assessment and echocardiographic evaluation• Volume management and diuresis considerations• Rate control, vasoactive medications, and afterload considerations• Respiratory support and hemodynamic stabilization• Specialist evaluation and definitive valve intervention• Comparing management priorities across the four valve lesions
The discussion emphasizes how stenosis and regurgitation affect circulation differently, providing a physiology-based framework for assessing and stabilizing decompensated valvular heart disease.
🎥 Watch the Full Video on YouTubehttps://www.youtube.com/watch?v=LjZQRc-ZGFY
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicinePatreon members receive access to:• Downloadable Study Guides• Clinical One-Pagers• Practice Questions• Mini-Courses• Comprehensive Clinical Reviews• Ad-Free Videos• Early Access Content
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⚠️ Educational Disclaimer:This content is for educational purposes only and is not a substitute for professional medical advice, clinical judgment, or individualized patient care. Never disregard professional medical advice or delay seeking it because of this content.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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 stenosis and mitral regurgitation pathophysiology• Hemodynamic differences between stenotic and regurgitant valve disease• Acute versus chronic presentations and triggers for decompensation• Left atrial pressure, pulmonary edema, and pulmonary hypertension• Preload, afterload, heart rate, and cardiac output• Atrial fibrillation and its hemodynamic consequences• Ventricular function and cardiogenic shock• Clinical recognition and echocardiographic evaluation• Volume assessment and diuresis considerations• Rate and rhythm management considerations• Afterload reduction and vasoactive medication considerations• Respiratory support and hemodynamic stabilization• Specialist evaluation and definitive valve intervention• Key differences in management priorities for mitral stenosis versus regurgitation
The discussion connects mitral valve physiology with clinical deterioration, emphasizing how the underlying lesion influences assessment, treatment selection, and stabilization priorities.
🎥 Watch the Full Video on YouTubehttps://www.youtube.com/watch?v=z-DGicLG5gM
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicinePatreon members receive access to:• Downloadable Study Guides• Clinical One-Pagers• Practice Questions• Mini-Courses• Comprehensive Clinical Reviews• Ad-Free Videos• Early Access Content
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⚠️ Educational Disclaimer:This content is for educational purposes only and is not a substitute for professional medical advice, clinical judgment, or individualized patient care. Never disregard professional medical advice or delay seeking it because of this content.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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 anatomy and pathophysiology• Acute versus decompensated chronic mitral regurgitation• Regurgitant flow, left atrial pressure, and forward cardiac output• Effects of preload, afterload, and ventricular function• Causes and precipitating factors for decompensation• Clinical recognition of pulmonary edema and cardiogenic shock• Echocardiographic evaluation• Volume assessment and diuresis considerations• Afterload reduction and blood pressure considerations• Respiratory support and hemodynamic stabilization• Vasoactive medications and mechanical circulatory support considerations• Specialist evaluation and definitive valve intervention
The discussion emphasizes how the timing and severity of mitral regurgitation influence clinical presentation, hemodynamics, and stabilization priorities.
🎥 Watch the Full Video on YouTubehttps://www.youtube.com/watch?v=jluwuXA0oB4
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicinePatreon members receive access to:• Downloadable Study Guides• Clinical One-Pagers• Practice Questions• Mini-Courses• Comprehensive Clinical Reviews• Ad-Free Videos• Early Access Content
🌐 WhiteBoard Medicine WebsiteExplore our growing library of critical care and emergency medicine content:https://www.whiteboardmedicine.com
⚠️ Educational Disclaimer:This content is for educational purposes only and is not a substitute for professional medical advice, clinical judgment, or individualized patient care. Never disregard professional medical advice or delay seeking it because of this content.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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 pathophysiology• Left atrial pressure and impaired left ventricular filling• Transmitral pressure gradients and heart rate• Precipitating factors for acute decompensation• Atrial fibrillation and rapid ventricular response• Pulmonary edema and respiratory distress• Pulmonary hypertension and right ventricular dysfunction• Clinical recognition and echocardiographic evaluation• Volume assessment and diuresis considerations• Rate and rhythm management considerations• Respiratory support and hemodynamic stabilization• Specialist evaluation and definitive valve intervention
🎥 Watch the Full Video on YouTubehttps://www.youtube.com/watch?v=6vDLQOlnCdE
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicinePatreon members receive access to:• Downloadable Study Guides• Clinical One-Pagers• Practice Questions• Mini-Courses• Comprehensive Clinical Reviews• Ad-Free Videos• Early Access Content
🌐 WhiteBoard Medicine WebsiteExplore our growing library of critical care and emergency medicine content:https://www.whiteboardmedicine.com
⚠️ Educational Disclaimer:This content is for educational purposes only and is not a substitute for professional medical advice, clinical judgment, or individualized patient care. Never disregard professional medical advice or delay seeking it because of this content.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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:• What PaO2 means• What SaO2 and SpO2 mean• Oxygen saturation versus oxygen content• Hemoglobin-bound oxygen and dissolved oxygen• Arterial oxygen content and the CaO2 equation• Oxygen delivery and the DO2 equation• Oxyhemoglobin dissociation curve basics• Relationship between PaO2 and SaO2• P50 and hemoglobin oxygen affinity• Left shift and right shift of the curve• Bohr effect, pH, CO2, temperature, and 2,3-BPG• Oxygen unloading at the tissue level• Anemia and oxygen content• Shock and oxygen delivery• Practical clinical interpretation of oxygenation values
Watch the full video on YouTube: https://www.youtube.com/watch?v=rZBGeIlvnO4 
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicine
Patreon members receive access to:• Downloadable Study Guides• Clinical One-Pagers• Practice Questions• Mini-Courses• Comprehensive Clinical Reviews• Ad-Free Videos• Early Access Content
🌐 WhiteBoard Medicine WebsiteExplore our growing library of critical care and emergency medicine content:https://www.whiteboardmedicine.com
⚠️ Educational Disclaimer:This content is intended for educational purposes only and should not be used as a substitute for clinical judgment, institutional protocols, specialist consultation, or individualized patient care.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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 aortic valvulopathies are• Aortic stenosis versus aortic regurgitation• Severe aortic stenosis physiology• Fixed left ventricular outflow obstruction• Pressure overload and left ventricular hypertrophy• Preload dependence and coronary perfusion• Severe aortic regurgitation physiology• Aortic valve insufficiency and regurgitant flow• Left ventricular volume overload• Diastolic runoff and low diastolic pressure• Acute versus chronic aortic regurgitation• Pulmonary edema and cardiogenic shock• Bedside recognition and diagnostic clues• Murmurs, pulse pressure, ECG, POCUS, and echocardiography• Vasopressor, inotrope, vasodilator, and fluid considerations• Key differences in emergency management• Valve intervention and definitive management
Watch the full video on YouTube: https://www.youtube.com/watch?v=-7YRaZywRXQ 
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicine
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🌐 WhiteBoard Medicine WebsiteExplore our growing library of critical care and emergency medicine content:https://www.whiteboardmedicine.com
⚠️ Educational Disclaimer:This content is intended for educational purposes only and should not be used as a substitute for clinical judgment, institutional protocols, specialist consultation, or individualized patient care.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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 problems.
Topics covered include:• Airway resistance basics• Lung compliance basics• Peak pressure basics• Plateau pressure basics• Difference between peak pressure and plateau pressure• How airway resistance affects peak pressure• How lung compliance affects plateau pressure• High peak pressure with normal plateau pressure• High peak pressure with high plateau pressure• Causes of increased airway resistance• Causes of decreased lung compliance• Inspiratory hold maneuver• Ventilator waveforms and pressure interpretation• Obstructive physiology and bronchospasm• ARDS, pulmonary edema, atelectasis, and low compliance• Practical ventilator troubleshooting• Bedside approach to peak and plateau pressure changes
Watch the full video on YouTube: https://www.youtube.com/watch?v=RLIJKFpD1H4 
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicine
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🌐 WhiteBoard Medicine WebsiteExplore our growing library of critical care and emergency medicine content:https://www.whiteboardmedicine.com
⚠️ Educational Disclaimer:This content is intended for educational purposes only and should not be used as a substitute for clinical judgment, institutional protocols, specialist consultation, or individualized patient care.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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 resistance means• What lung compliance means• Peak pressure basics• Plateau pressure basics• Difference between peak pressure and plateau pressure• How airway resistance affects peak pressure• How lung compliance affects plateau pressure• High airway resistance patterns• Low lung compliance patterns• Common causes of increased airway resistance• Common causes of decreased lung compliance• Ventilator waveform basics• Practical interpretation of ventilator pressures• Introductory ventilator troubleshooting
Watch the full video on YouTube: https://www.youtube.com/watch?v=rugnCUpH6S8 
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicine
Patreon members receive access to:• Downloadable Study Guides• Clinical One-Pagers• Practice Questions• Mini-Courses• Comprehensive Clinical Reviews• Ad-Free Videos• Early Access Content
🌐 WhiteBoard Medicine WebsiteExplore our growing library of critical care and emergency medicine content:https://www.whiteboardmedicine.com
⚠️ Educational Disclaimer:This content is intended for educational purposes only and should not be used as a substitute for clinical judgment, institutional protocols, specialist consultation, or individualized patient care.Full disclaimer: https://whiteboardmedicine.com/disclaimer

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:• What PaO2 means• What oxygen saturation means• SpO2 versus SaO2• What oxygen content means• The oxygen-hemoglobin dissociation curve• Relationship between PaO2 and oxygen saturation• Hemoglobin-bound oxygen versus dissolved oxygen• Arterial oxygen content and the CaO2 equation• Why hemoglobin concentration matters• Oxygen delivery and the DO2 equation• Anemia and oxygen content• Hypoxemia and oxygen saturation• Shock and impaired oxygen delivery• Practical clinical interpretation of oxygenation values
Watch the full video on YouTube: https://www.youtube.com/watch?v=eMNinvf9hk8 
📚 Want More Emergency & Critical Care Medicine Education?Join the WhiteBoard Medicine Patreon community:https://www.patreon.com/WhiteBoardMedicine
Patreon members receive access to:• Downloadable Study Guides• Clinical One-Pagers• Practice Questions• Mini-Courses• Comprehensive Clinical Reviews• Ad-Free Videos• Early Access Content
🌐 WhiteBoard Medicine WebsiteExplore our growing library of critical care and emergency medicine content:https://www.whiteboardmedicine.com
⚠️ Educational Disclaimer:This content is intended for educational purposes only and should not be used as a substitute for clinical judgment, institutional protocols, specialist consultation, or individualized patient care.Full disclaimer: https://whiteboardmedicine.com/disclaimer