Hemodynamics Flashcards
Right Atrium Pressure
2-6
Right Ventricle Pressure
15-25
Left Atrium Pressure
8-12
Left Ventricle Pressure
110-140
Pulmonary Artery Pressure
15-25 systolic
8-15 diastolic
Aorta Pressure
100-130 systolic
60-90 diastolic
Is right pressures higher or lower than the left
lower
what is cardiac output
amt of blood pumped by the heart per min.
SVxHR=Cardiac Output
what is pre-load
stretch, amount of volume returned to the heart
what is after-load
resistance the cardiac muscle overcomes to eject blood from the heart
what is contractility
force of ventricular contraction
what is ejection fraction
how much blood is being ejected from ventricles after each beat
normal ejection fraction
60-70%
what will increase cardiac output
Increased HR (exercise, fight or flight) Digoxin
what will reduce cardiac output
beta blockers
reasons for increased preload on right side
rt ventricle cardiomyopathy
sepsis
pulmonary retention
hypovolemia
what is hypovolemia
decrease in circulating blood in general
reason for increased preload on left side
cardiac tamponade
what is a cardiac tamponade
pressure around the heart from fluid(blood)
what can increase after-load
HTN
what can decrease after-load
ace-inhibitors
dilation
sepsis
nitroglycerin
what is systemic vascular resistance
force overcome by left ventricle upon contraction
what is the indirect measure of the left ventricular afterload
arterial blood pressure
what is pulmonary vascular resistance
resistance the right ventricle must overcome to eject blood
