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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.

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  1. What is the normal range for pulmonary capillary wedge pressure (PCWP) in a healthy adult?

    Answer: 2–12 mmHg

    Normal PCWP is 2–12 mmHg and reflects left atrial filling pressure.

  2. During right heart catheterization, which chamber is entered immediately after passing through the tricuspid valve?

    Answer: Right ventricle

    The tricuspid valve separates the right atrium from the right ventricle, so passage through it leads into the right ventricle.

  3. Which hemodynamic parameter is calculated as mean arterial pressure minus right atrial pressure divided by cardiac output?

    Answer: Systemic vascular resistance

    Systemic vascular resistance (SVR) = (MAP − RAP) / CO × 80, reflecting afterload on the left ventricle.

  4. A cardiac output of 4.0 L/min with a BSA of 2.0 m² yields a cardiac index of:

    Answer: 2.0 L/min/m²

    Cardiac index = CO / BSA = 4.0 / 2.0 = 2.0 L/min/m², which is at the lower limit of normal.

  5. The Fick principle for calculating cardiac output requires measurement of:

    Answer: Oxygen consumption and arteriovenous oxygen difference

    The Fick method calculates CO = VO₂ / (CaO₂ − CvO₂), requiring oxygen consumption and A-V O₂ content difference.

  6. Which waveform component of an arterial pressure tracing represents closure of the aortic valve?

    Answer: Dicrotic notch

    The dicrotic notch on the arterial waveform corresponds to aortic valve closure at the end of systole.