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Clinical Procedures & Techniques 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 Clinical Procedures & Techniques flashcards as text

  1. During electrosurgery, the patient return electrode (dispersive pad) should be placed to minimize which primary hazard?

    Answer: Current concentration causing burns at the pad site

    Improper placement or poor contact of the dispersive pad concentrates current, causing burns; it must have full, even skin contact over a large, well-perfused area.

  2. A defibrillator's energy output is measured during performance testing. For a 200 J selected energy, what delivered energy range is typically acceptable per IEC 60601-2-4?

    Answer: ±15% or ±4 J (whichever is greater)

    IEC 60601-2-4 allows defibrillator delivered energy to be within ±15% of the selected energy or ±4 J, whichever is greater.

  3. In bronchoscopy suite support, the MOST critical role of the biomedical technician regarding the light source is to verify:

    Answer: Fiber bundle is connected before powering on to prevent tissue ignition

    High-intensity light sources can ignite drapes or cause burns if activated without the fiber optic bundle connected; this safety check is paramount.

  4. Which ventilator parameter directly controls the fraction of time spent in inspiration versus total breath cycle time?

    Answer: Inspiratory:Expiratory ratio (I:E ratio)

    The I:E ratio defines the proportion of the respiratory cycle devoted to inspiration versus expiration, directly affecting gas distribution and hemodynamics.

  5. A Holter monitor recording shows frequent artifact. The MOST common cause of motion artifact in ambulatory ECG monitoring is:

    Answer: Loose or improperly prepped electrode-skin interface

    Poor skin preparation (oil, hair, moisture) and loose electrodes cause the majority of Holter motion artifacts by introducing impedance fluctuations.

  6. When performing routine safety testing on a patient-connected medical device, the maximum allowable patient leakage current under normal conditions (NC) for a Type CF device is:

    Answer: 10 µA

    IEC 60601-1 specifies that Type CF devices (intended for direct cardiac application) have a maximum patient leakage current of 10 µA under normal conditions.

  7. During an arterial blood gas (ABG) sampling procedure, the sample is exposed to room air for 10 minutes before analysis. Which values will be MOST affected?

    Answer: PaO2 and PaCO2

    Air exposure allows CO2 to escape (lowering PaCO2) and O2 to enter (raising PaO2), making gas tensions the most critically affected parameters.