CIR Hemodynamic Monitoring & Cardiac Catheterization Flashcards
6 cards from real CIR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CIR Hemodynamic Monitoring & Cardiac Catheterization flashcards as text
During coronary angiography, the Judkins right catheter is most commonly used to cannulate which ostium?
Answer: Right coronary ostium
The Judkins right (JR4) catheter is specifically shaped to engage the right coronary artery ostium from the right femoral or radial approach.
What does an 'A' wave on a central venous pressure (CVP) tracing represent?
Answer: Atrial contraction
The 'A' wave on CVP tracing corresponds to atrial contraction against a closed or closing tricuspid valve.
Which finding on hemodynamic tracings is characteristic of cardiac tamponade?
Answer: Equalization of diastolic pressures across chambers
Tamponade physiology produces equalization of RA, RV diastolic, PA diastolic, and PCWP pressures due to pericardial compression.
A thermodilution cardiac output measurement involves injection of cold saline into the:
Answer: Right atrium
Cold saline is injected into the right atrium through the proximal port of a Swan-Ganz catheter, and temperature change is detected distally in the pulmonary artery.
Elevated left ventricular end-diastolic pressure (LVEDP) above 18 mmHg most likely indicates:
Answer: Left ventricular dysfunction or failure
LVEDP > 18 mmHg reflects impaired LV compliance or systolic dysfunction, indicating elevated filling pressures consistent with heart failure.
The pressure gradient across a stenotic aortic valve is most accurately measured by simultaneous recording from the:
Answer: Left ventricle and ascending aorta
Aortic valve stenosis severity is determined by the peak-to-peak or mean gradient between LV pressure and ascending aortic pressure.