Practice Test Geeks(CABT) Certified Associate in Biomedical Technology Practice Test
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Biomedical Equipment Technology & Function 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 Biomedical Equipment Technology & Function flashcards as text

  1. Which sterilization method is most appropriate for heat-sensitive, moisture-sensitive endoscopes that cannot withstand steam autoclave cycles?

    Answer: Ethylene oxide (EtO) gas sterilization

    EtO gas penetrates packaging and device lumens at low temperatures, making it suitable for heat- and moisture-sensitive items like flexible endoscopes.

  2. In an ECG, a prolonged PR interval (>200 ms) indicates a conduction delay in which structure?

    Answer: Atrioventricular (AV) node

    The PR interval represents the time from atrial depolarization to ventricular depolarization; prolongation indicates slowed conduction through the AV node (first-degree AV block).

  3. A centrifugal blood pump used in ECMO differs from a roller pump primarily because it:

    Answer: Is afterload-sensitive and cannot generate dangerously high pressures against an outlet obstruction

    Centrifugal pumps are preload- and afterload-dependent; if the outlet is occluded, flow drops rather than pressure rising to dangerous levels, unlike roller pumps which can rupture the circuit.

  4. The 'over-damped' waveform on an arterial line pressure tracing is characterized by:

    Answer: Blunted systolic peak and loss of the dicrotic notch

    Over-damping (from air bubbles, clots, or compliant tubing) absorbs energy and rounds the waveform, causing underestimation of systolic pressure and loss of fine features like the dicrotic notch.

  5. During a nuclear medicine gamma camera quality control test, a 'uniformity flood' is performed to check:

    Answer: Homogeneous sensitivity response across the detector face

    A uniformity flood test exposes the entire detector to a uniform source; non-uniform response (hot or cold spots) indicates PMT or crystal problems requiring service.

  6. A hospital-grade power strip differs from a consumer power strip primarily because it:

    Answer: Has hospital-grade outlets with higher retention force and is listed for patient care areas

    Hospital-grade power strips use high-retention outlets that resist accidental disconnection and meet UL 1363A standards for health care facilities, unlike consumer strips.

  7. A sequential compression device (SCD) used for DVT prophylaxis applies intermittent pneumatic compression to the legs. The primary physiological mechanism is:

    Answer: Augmenting venous return and stimulating endogenous fibrinolysis

    SCDs compress the leg veins in a distal-to-proximal sequence, enhancing venous return and triggering release of tissue plasminogen activator, reducing DVT risk.