308 results
Shock Classification and Differential Diagnosis
SHOCK
 • MAP <65, SBP <90, drop in SBP > 40
 •
Shock Classification ... Differential Diagnosis SHOCK ... Distributive: • High CO ... Cardiogenic: • Low CO ... Sophia_Hayes_MD #Shock
Shock - Differential Diagnosis Framework
MAP = CO x SVR
Hypovolemic (↓ Intravascular volume):
 • Hemorrhage, dehydration due
Shock - Differential ... Framework MAP = CO ... third-spacing • ↓ CO ... arrhythmia • ↓ CO ... uw_IMresidency #Shock
Approach to Undifferentiated Shock - OnePager Summary
Shock occurs when there is inadequate blood flow (CO) &
Undifferentiated Shock ... OnePager Summary Shock ... inadequate blood flow (CO ... Pump Problem (↓ CO ... may develop low CO
Shock - Differential Diagnosis Framework
 - MAP <65. SBP <90, drop in SBP > 40
 -
Shock - Differential ... Lactate > 1.5 High CO ... Cord Injury Low CO ... Dehydration Shock ... Sophia_Hayes_MD #Shock
Mean Arterial Pressure (MAP)

Average arterial pressure throughout one cardiac cycle, systole, and diastole. 
Surrogate indicator of
Cardiac Output (CO ... (CVP) MAP = (CO ... Cardiac output (CO ... dromotropy, and lusitropy ... chronotropy #dromotropy #lusitropy
Shock Overview
A state of tissue hypoxia due to decreased or dysregulated oxygen delivery or extraction, resulting
Shock Overview ... of hypotension Shock ... - Low CO and therefore ... - Low CO and therefore ... - Low CO and therefore
Vasopressors and Inotropes - Pharmacology Summary
Vasopressors
Phenylephrine (alpha-1)
 • Increases BP, SVR
 • Risk of reflex bradycardia
Increases BP, SVR, CO ... first agent in shock ... Increases HR, SVR, CO ... line in septic shock ... contractility, CO
Shock Overview
A state of tissue hypoxia due to decreased or dysregulated oxygen delivery or extraction, resulting
Shock Overview ... of hypotension Shock ... - Low CO and therefore ... - Low CO and therefore ... - Low CO and therefore
Common Vasopressors and Inotropes
Norepinephrine (NE)
 - Indication: Distributive shock (1st line for septic shock), Cardiogenic shock
: Distributive shock ... line for septic shock ... ), Cardiogenic shock ... (mild ↑CO) - Side ... , Shock where ↑
DO2 Equation in Shock = Oxygen Delivery
DO2 = CO x (1.39 x [Hb] x SaO2 +(0.003xPaO2))
DO2
DO2 Equation in Shock ... Delivery DO2 = CO ... ml per minute) CO ... DO2 #Equation #Shock