Medical Equipment Operations 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 Medical Equipment Operations flashcards as text
What does the term 'tidal volume' specifically refer to in mechanical ventilation?
Answer: The volume of air moved in one normal breath cycle
Tidal volume is the volume of air inhaled or exhaled during a single normal breath, typically set between 6–8 mL/kg of ideal body weight in ventilated patients.
Which safety feature in an infusion pump prevents free-flow of medication when the door is opened?
Answer: Free-flow protection clamp
Free-flow protection clamps automatically occlude the tubing when the pump door is opened, preventing gravity-driven free flow of potentially dangerous medications.
In an automated external defibrillator (AED), what does the device analyze before advising a shock?
Answer: Heart rhythm via ECG electrodes
AEDs use built-in algorithms to analyze the patient's ECG rhythm through electrode pads to determine whether a shockable rhythm such as VF or pulseless VT is present.
What is the purpose of 'PEEP' in mechanical ventilation?
Answer: To maintain positive pressure in the airway at end-expiration and prevent alveolar collapse
Positive End-Expiratory Pressure (PEEP) keeps a baseline positive pressure in the airways at the end of exhalation, preventing alveolar collapse and improving oxygenation.
A biomedical technician performs an electrical safety test and measures chassis leakage current of 600 µA on a Class I device. What action should be taken?
Answer: Remove the device from service; it exceeds the 500 µA limit for Class I devices
AAMI/IEC standards for Class I medical devices set a maximum chassis leakage current of 500 µA under normal conditions; 600 µA exceeds this limit and requires the device be removed from service.
Which type of medical gas outlet uses a pin-index safety system to prevent misconnection?
Answer: Cylinder valve connections for small cylinders
The Pin Index Safety System (PISS) uses unique pin configurations on small medical gas cylinders to ensure only the correct gas regulator can be attached.
What is 'compressive stockings pump' (sequential compression device) used for in clinical settings?
Answer: Preventing deep vein thrombosis by promoting venous return in lower extremities
Sequential compression devices inflate and deflate chambers around the legs in a sequential pattern to mimic muscle pumping action and prevent DVT in immobile patients.