Hemodynamics Flashcards
MAP normal range
80-100 mm Hg
Normal HR Range
60-80bpm
Normal CVP Range
2-6 mm Hg
Normal SVR Range
800-1200 dyn•s/cm3
Normal CO
4-7 L/min
Normal CI
2.8-3.6 L/min/m2
Pulmonary Artery Pressure
15-30/5-15
Pulmonary Capillary Wedge Pressure
4-12 mm Hg
Measure of Preload
CVP
Measure of after load
SVR
Measure of CO
Cardiac Index
Measure of contractility
LVEF
Normal LVEF
50-70%
Normal SaO2
95-100%
Normal SvO2
70-75%
MAP Equation
{(2 x DBP) + SBP}/ 3
BP equation
(HR x SV) x SVR
Hemodynamics of Hypovolemic Shock
Decreased CVP
Increased HR
May have increased LVEF
Increased SVR
Common Causes of Hypovolemic Shock
Hemorrhage
Sustained fluid loss without repletion
Fluid shift from intravascular to tissue-> “third spacing”
Treatment of Hypovolemic shock
Control bleeding, fluid replacement, blood products
Hemodynamics of Distributive shock
May have decreased CVP
Increased HR
Increased LVEF
Decreased SVR
Causes of Septic distributive shock
Sepsis
Anaphylaxis
Neurogenic shock after CNS or spinal cord injury
Treatment of distributive shock
Antibiotics for sepsis Epi for anaphylaxis Fluid replacement Vasopressors Intotropes Steroids Atropine
Hemodynamics of Cardiogenic shock
Increased CVP
Increased HR
Decreased contractility
Increased/decreased SVR
Causes of Cardiogenic shock
Acute MI
Heart Failure
Pulmonary hypertension
Valvular disease
Treatment of Cardiogenic shock
Early, revascularization, restore euvolemia, inotropes, vasopressors, mechanical support if needed
What is obstructive shock?
Decreased preload leading to low CO
Causes of obstructive shock
Massively PE, cardiac tamponade, tension pneumothorax
Treatment of obstructive shock
Rapid correction of cause for obstruction-> thrombolytics, chest tube placement, surgical intervention
Colloid doses are how much reduced compared to crystalloids?
1/5th
Beta 1 location
Cardiac tissue; increased contractility and heart rate
Beta 2 tissues
Bronchioles; bronchdilation
Peripheral vascularture; vasodilation
Alpha 1 tissue and effect
Peripheral vasculature; vasoconstriction and increased BP
Alpha 2 tissue and effect
Peripheral vasculature; vasoconstriction and increased BP
