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hemodynamics
| Question | Answer |
|---|---|
| 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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