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Hemo Quiz-Semester 6

QuestionAnswer
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