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
A square wave (fast-flush) test shows excessive oscillations before returning to baseline. This indicates:
Answer: An underdamped system
Multiple oscillations after the flush indicate underdamping, which overestimates systolic pressure.
Which formula correctly expresses mean arterial pressure (MAP)?
Answer: (SBP + 2 x DBP) / 3
MAP weights diastole more heavily because diastole occupies more of the cardiac cycle.
A high CVP with hypotension, jugular venous distension, and muffled heart sounds suggests:
Answer: Cardiac tamponade
Beck's triad of elevated venous pressure, hypotension, and muffled heart sounds defines tamponade.
Stroke volume variation (SVV) is a useful predictor of fluid responsiveness primarily in patients who are:
Answer: Mechanically ventilated in sinus rhythm
SVV reliability depends on positive-pressure ventilation and regular cardiac rhythm.
Cardiac index is calculated by dividing cardiac output by:
Answer: Body surface area
Cardiac index normalizes cardiac output to body surface area for comparison across patients.
An elevated systemic vascular resistance (SVR) with low cardiac output is most consistent with:
Answer: Cardiogenic shock
Compensatory vasoconstriction raises SVR while a failing heart lowers output in cardiogenic shock.
During PA catheter insertion, a sustained right ventricular waveform indicates the tip is in the RV and the nurse should:
Answer: Notify the provider to advance or withdraw to reduce arrhythmia risk
A catheter tip lodged in the RV can provoke ventricular arrhythmias and must be repositioned.