Practice Test Geeks(CABT) Certified Associate in Biomedical Technology Practice Test
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Patient Monitoring Flashcards

7 cards from real CABT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Patient Monitoring flashcards as text

  1. A central venous pressure (CVP) waveform shows an elevated 'a' wave. This finding is most associated with:

    Answer: Tricuspid stenosis or right ventricular non-compliance

    An elevated 'a' wave in the CVP tracing reflects increased atrial contraction force against a non-compliant or obstructed right ventricle, as seen in tricuspid stenosis.

  2. The bioimpedance method of cardiac output monitoring works by measuring changes in:

    Answer: Thoracic electrical impedance during cardiac cycles

    Bioimpedance cardiac monitoring measures beat-to-beat changes in thoracic electrical resistance caused by blood flow, allowing non-invasive cardiac output estimation.

  3. Which alarm condition on a ventilator should a biomedical technician investigate first because it poses immediate life threat?

    Answer: Low pressure / disconnect alarm

    A low pressure or disconnect alarm indicates the patient may not be receiving ventilatory support, representing an immediate life threat requiring urgent response.

  4. During ECG monitoring, a 60 Hz electrical interference pattern on the tracing is most likely caused by:

    Answer: Poor electrode contact or nearby electrical equipment

    60 Hz interference (AC interference) is caused by nearby electrical equipment or poor skin-electrode contact allowing AC power line noise to couple into the signal.

  5. When a non-invasive blood pressure cuff is too large for the patient, what is the expected effect on the reading?

    Answer: Falsely low blood pressure reading

    An oversized cuff fails to generate adequate pressure over the artery, resulting in falsely low blood pressure measurements.

  6. Pulse transit time (PTT)-based blood pressure monitoring estimates blood pressure by measuring:

    Answer: The time delay between the ECG R-wave and the arrival of the pulse wave at a peripheral site

    PTT-based monitoring measures the time for a pressure wave to travel from the heart to a peripheral sensor; shorter PTT correlates with higher blood pressure.

  7. A bispectral index (BIS) monitor primarily measures which physiological parameter?

    Answer: Depth of anesthesia or sedation via processed EEG

    The BIS monitor uses a processed EEG algorithm to generate a numeric index (0–100) that reflects the patient's level of consciousness or depth of anesthesia.