General Practice Flashcards
7 cards from real CBET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 General Practice flashcards as text
A pulse oximeter reads 98% SpO2 but the patient appears cyanotic. Which condition MOST likely explains this discrepancy?
Answer: Carbon monoxide poisoning causing carboxyhemoglobin
Pulse oximetry cannot distinguish carboxyhemoglobin from oxyhemoglobin, so CO poisoning produces falsely elevated SpO2 readings despite true hypoxia.
The primary purpose of a Faraday cage in a medical imaging suite is to:
Answer: Prevent external RF signals from interfering with MRI signals
A Faraday cage blocks external radiofrequency signals that would interfere with the extremely weak MRI signals being detected.
When calibrating a patient scale used for medication dosing, a biomedical technician should use NIST-traceable weights primarily to:
Answer: Ensure measurements are accurate relative to a national standard
NIST-traceable weights provide an unbroken chain of calibration to national standards, ensuring measurement accuracy and regulatory compliance.
In a 3-phase electrical system supplying medical imaging equipment, an open neutral conductor would MOST likely cause:
Answer: Overvoltage on some phases damaging connected equipment
An open neutral in a 3-phase system causes voltage imbalance, resulting in overvoltage on some phases that can damage connected equipment.
A surgical electrosurgical unit (ESU) causes interference on a nearby patient monitor. The FIRST corrective action should be:
Answer: Check and ensure proper placement and contact of the ESU dispersive electrode
Improper dispersive electrode placement causes high-frequency current to seek alternate paths, creating interference in nearby monitoring equipment.
Which parameter is checked during an acceptance test for a defibrillator to verify energy delivery accuracy?
Answer: Delivered energy measured with a calibrated defibrillator analyzer
A calibrated defibrillator analyzer measures actual delivered energy into a known load, verifying the device delivers the energy it displays.
Which law governs the relationship between pressure, volume, and temperature for an ideal gas, relevant to medical gas cylinders?
Answer: The Combined Gas Law (Boyle's + Charles' Laws)
The Combined Gas Law (P1V1/T1 = P2V2/T2) describes how pressure, volume, and temperature interrelate in gas cylinders used in medical settings.