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hemodynamics

QuestionAnswer
reads the pressure and gives you a number transducer
intersection of the midanterior-posterior line and fourth intercostal space phlebostatic axis
opening the stopcock to let atmospheric air in lets the transducer know this is called zeroing
determines the ability of the transducer to correctly reflect pressures and should be done at the beginning of each shift square wave test
provides continuous measurement of blood pressure intra-aterial catheter
brain and kidneys like the MAP to be no less than seventy
Dressing change for an arterial pressure monitoring devise must be done every 72 hours
reflects pressure of blood in the right atrium or venacava and is used to monitor fluid volume status CVP: centeral venous pressure
Measures pressures, cardiac output and blood flow pulmonary artery catheter
What does the PAWP reflect the left ventricular end diastolic pressure (LVEDP)
which side of the heart has higher pressures left side of the heart
always measure PAWP when at end-expiration
What will happen if the pulmonary artery ruptures or perforates the patient will cough up blood
Cardiac Output equals Heart rate X Stroke volume
Cardiac Index equals Cardiac Output / body surface area
the amount of stretch placed on the cardiac muscle just prior to systole, Determined by ventricular filling Preload
Preload equals volume
Afterload equals pressure
Impedance to ejection of blood from the ventricles Afterload
Left Heart afterload SVR: systemic vascular resistance
Right heart afterload PVR: pulmonary vascular resistance
right heart preload CVP
low right heart preload hypovolemia
high right heart preload volume overload or back pressure form the right ventricle
left heart preload PAWP
low left heart preload hypovolemia
high left heart preload volume overload or back pressure for the left ventricle
We want hemoglobin to be around 10
what does the left ventrical have to pump against SVR: systemic vascular resistance
if SV is low you have a problem with contractility
what helps with contractility inotropic agents (dig, dopamine, epinephrine)
Created by: dnoyes
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