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Nur-458

Normal Pressures

TermDefinition
What is PAP? Pulmonary artery pressure
What is normal PAP? 15-30 mm Hg/4-12 mm Hg Systolic/Diastolic
What is PAWP? Pulmonary artery wedge pressure
What is normal PAWP? 6-12 mm Hg
What is CVP? Central venous pressure
What is normal CVP? 2-8 mm Hg
What is CO? Cardiac output
What is normal CO? 4-8 L/min
What is CI? Cardiac index
What is normal CI? 2.2-4 L/min/m2
What is SV? Stroke volume
What is normal SV? 60-150 mL/beat
What is MAP? Mean arterial pressure
What is normal MAP? 70-105 mm Hg
What does PAP measure? Pressure generated by the right ventricle ejecting blood into the pulmonary circulation
What does PAWP measure? Left ventricular end diastolic pressure; left ventricular preload
What does CVP measure? Right atrium or vena cava end diastolic pressure; right ventricular preload
What does cardiac output measure? CO = SV X HR
What does cardiac index measure? CO/BSA
What does stroke volume measure? The amount of blood ejected in one full pump of the heart
What three parameters comprise stroke volume? Preload, afterload and contractility
What is afterload? Amount of pressure the ventricle must work against during systole to open the valve
What increases afterload? Vasoconstriction, valvular stenosis, and increased blood volume
What decreases afterload? Vasodilation
How do positive inotropes affect contractility? They increase contractility
How do negative inotropes affect contractility? They decrease contractility
What type of inotropes are digoxin, dobutamine, epinephrine and dopamine? Positive inotropes
What type of inotropes are beta-blockers, amiodarone, verapamil and diltiazem? Negative inotropes
Created by: ssbourbon
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