Hemodynamic Monitoring Flashcards
7 cards from real CCRN practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Hemodynamic Monitoring flashcards as text
An overdamped arterial waveform will MOST likely cause the displayed values to:
Answer: Underestimate systolic and overestimate diastolic pressure
Overdamping blunts the waveform, lowering systolic and raising diastolic readings.
Pulsus paradoxus, a drop in systolic pressure greater than 10 mmHg during inspiration, is a hallmark of:
Answer: Cardiac tamponade
Exaggerated inspiratory fall in systolic pressure occurs with the impaired filling of tamponade.
Which scenario most increases the risk of inaccurate CVP readings?
Answer: High levels of PEEP
High PEEP raises intrathoracic pressure and falsely elevates the measured CVP.
An intra-aortic balloon pump should inflate at which point in the cardiac cycle?
Answer: At the dicrotic notch (onset of diastole)
Inflation at the dicrotic notch augments diastolic coronary perfusion.
A patient in shock has CVP 1, PCWP 3, cardiac output low, and SVR elevated. The priority intervention is:
Answer: Fluid resuscitation
Low filling pressures indicate hypovolemia, so volume replacement is the priority.
Which complication is the patient at greatest risk for if the arterial line flush bag pressure falls below 300 mmHg?
Answer: Backflow of blood and clot formation in the line
Insufficient bag pressure allows blood to back up into the tubing, promoting clotting.
Oxygen delivery (DO2) to the tissues depends primarily on cardiac output and:
Answer: Arterial oxygen content
DO2 equals cardiac output multiplied by arterial oxygen content.