Questions and Answers
What happens to MAP for all types of shock?
What is the change in CVP (Central Venous Pressure) during septic shock?
What is the change in CVP during hypovolemic shock?
What happens to CVP in cardiogenic shock?
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What happens to CVP during obstructive shock?
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What is the change in PAWP (Pulmonary Artery Wedge Pressure) during septic shock?
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What happens to PAWP during hypovolemic shock?
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What is the change in PAWP during cardiogenic shock?
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What happens to PAWP in obstructive shock?
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What happens to cardiac output during septic shock?
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What is the change in cardiac output during hypovolemic, cardiogenic, or obstructive shock?
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What happens to SVR (Systemic Vascular Resistance) in septic shock?
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What is the change in SVR in hypovolemic, cardiogenic, or obstructive shock?
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Study Notes
Shock Types and Hemodynamic Changes
- Decreases MAP in all types of shock, indicating a drop in mean arterial pressure, which can affect organ perfusion.
- Decreases CVP in septic shock, reflecting reduced venous return due to vasodilation and increased capillary permeability.
- Decreases CVP in hypovolemic shock, caused by significant fluid loss or inadequate fluid intake, leading to decreased blood volume.
- Increases CVP in cardiogenic shock, resulting from heart failure where the heart cannot pump effectively, causing fluid buildup.
- Increases CVP in obstructive shock, stemming from physical obstructions in the great vessels impacting venous return.
Pulmonary Artery Wedge Pressure (PAWP) Changes
- Decreases PAWP in septic shock, indicating decreased left atrial pressures as a consequence of circulatory failure.
- Decreases PAWP in hypovolemic shock, correlating with reduced fluid volume impacting pulmonary circulation.
- Increases PAWP in cardiogenic shock, reflecting left atrial and pulmonary congestion due to impaired cardiac function.
- Increases PAWP in obstructive shock, linked to blockages affecting blood flow to the heart.
Cardiac Output Variations
- Increases in cardiac output in septic shock can happen temporarily due to compensatory mechanisms, despite overall low MAP.
- Decreases in cardiac output are noted in hypovolemic, cardiogenic, and obstructive shocks, indicating inadequate blood flow to sustain organ function.
Systemic Vascular Resistance (SVR) Dynamics
- Decreases SVR in septic shock, attributed to widespread vasodilation and systemic inflammatory response.
- Increases SVR in hypovolemic, cardiogenic, and obstructive shocks, resulting from compensatory vasoconstriction in response to decreased blood flow.
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Description
Test your knowledge on the various types of shock and their effects on MAP and CVP. This quiz covers definitions and key indicators to help deepen your understanding of shock pathology. Perfect for medical students and healthcare professionals!
