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Hemo Quiz-Semester 6
| Question | Answer |
|---|---|
| In what arteries can can an arterial line be placed? | Radial, brachial, femoral, dorsalis pedis, and umbilical |
| What does an arterial line measure? | Systemic blood pressure |
| What is normal systemic blood pressure? | 120/80 mmHg |
| How do you correct a dampened (flattened) waveform? | Flush if there is air bubbles in the tubing or tighten if there is a loose connection |
| What can cause dampened (flattened) waveforms on an arterial line? | Air bubbles or a loose connection |
| What causes an arterial line to measure lower than the actual pressure? | Transducer placed too high |
| How can you correct an inaccurately low arterial line reading? | Lower the transducer; should be even with patient's heart |
| What causes an arterial line to measure higher than the actual pressure? | Transducer placed too low |
| How can you correct an inaccurately low arterial line reading? | Raise the transducer; should be even with patient's heart |
| What causes a back up of blood in the arterial line tubing? | Inadequate pressure in bag |
| How do you correct blood back up in arterial line tubing? | Pump up the bag (increase bag pressure) |
| What causes an inaccurate reading or signal problem on an arterial line? | Clot in the catheter tip or catheter up against artery wall |
| How do you correct an inaccurate reading caused by a clot in the catheter tip? | Flush |
| How do you correct an inaccurate reading caused by the catheter being placed against the artery wall? | Reposition |
| Where is a central venous catheter inserted? | Right subclavian vein, right jugular vein, femoral veins |
| Where does the central venous catheter sit? | SVC, IVC (if femoral), or RA |
| What does the central venous catheter measure? | Filling pressure of the right atrium |
| What is the normal central venous pressure? | 2-6 mmHg |
| What does the central venous catheter evaluate? | Right heart function and systemic blood volumes (venous return) |
| How many lumen does a pulmonary artery catheter have? | Four |
| What is a pulmonary artery catheter? | Strong, flexible catheter |
| What does the pulmonary artery catheter measure? | Simultaneously measures pressures in RA, PA, and filling pressure of left heart |
| Where is the pulmonary artery catheter inserted? | Subclavian, internal jugular, femoral vein (rare) |
| How is the pulmonary artery catheter threaded? | Right atrium to right ventricle to pulmonary artery; sits in the pulmonary artery |
| What does RA/CVP pressure measure? | Blood returning to the heart |
| What does RA/CVP pressure evaluate? | Evaluates ability of right heart to pump blood into pulmonary system |
| What is normal RA/CVP pressure? | 2-6 mmHg |
| Where is RA/CVP pressure measured? | Proximal port of PAC |
| What does the systolic PAP measure? | RV function |
| What does diastolic PAP measure? | PVR |
| What does PAP evaluate overall? | Pulmonary vasculature |
| What is normal PAP? | 15-25/8-15 mmHg |
| What is PAP measured? | Distal port of PAC |
| What does PCWP measure? | LV filling pressure |
| What does PCWP evaluate? | Left heart function |
| What is normal PCWP? | 4-12 mmHg |
| How is PCWP measured? | By PAC, inflate balloon to wedge catheter |
| What should you do if you are unable to wedge? | You can use PAP diastolic pressure as a substitute - PAP diastolic also reflects left ventricular end-diastolic pressure |
Created by:
ashconrad417
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