Ultimate 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 Ultimate flashcards as text
A centrifugal blood pump used in ECMO loses prime and shows air in the circuit. What is the IMMEDIATE corrective action?
Answer: Clamp the circuit and notify the perfusionist/physician immediately
Air in an ECMO circuit is a life-threatening emergency requiring immediate circuit clamping and clinical team notification to prevent air embolism.
What does the term 'macroshock' mean in the context of electrical safety?
Answer: Sufficient current applied to the body surface to cause ventricular fibrillation (typically >100 mA)
Macroshock refers to externally applied current large enough to cause physiological harm including ventricular fibrillation, typically requiring >100 mA.
A digital X-ray flat panel detector shows persistent ghost images (image lag). What is the MOST likely cause?
Answer: Residual charge trapped in amorphous silicon photodiodes between exposures
Image lag in flat panel detectors occurs when residual charge from a prior exposure is incompletely cleared from the photodiode array before the next acquisition.
Which type of medical gas pipeline color is used for oxygen in US healthcare facilities per NFPA 99?
Answer: Green
In the United States, oxygen medical gas pipelines and outlets are color-coded green per NFPA 99 standards.
A patient-controlled analgesia (PCA) pump is delivering more drug than programmed. Which safety mechanism has MOST likely failed?
Answer: The anti-siphon valve or free-flow protection mechanism
Free-flow protection and anti-siphon valves prevent gravity-driven uncontrolled drug delivery; failure of these mechanisms causes over-infusion.
In a clinical laboratory analyzer, a hemolyzed sample would cause which type of result error?
Answer: Falsely elevated potassium and LDH due to intracellular contents released
Hemolysis releases intracellular contents including potassium and LDH into the plasma, causing falsely elevated measurements of these analytes.
When performing acceptance testing on a new infusion pump, which document provides the minimum performance requirements to verify?
Answer: The manufacturer's operator manual and device specifications
Acceptance testing verifies that the device meets manufacturer specifications documented in the operator manual, confirming it arrived undamaged and functional.