CBET Healthcare Technology Problem-Solving 2

Question 1

A nurse reports that a pulse oximeter is consistently reading SpO2 values 5-8% lower than expected on multiple patients. What is the most likely cause?

Accepted Answer

The sensor is placed incorrectly or the sensor window is dirty/damaged

Answer

The device software needs updating

Answer

The room temperature is too cold

Answer

The device battery is low

Question 2

An infusion pump displays a 'door open' alarm even though the door is fully closed and latched. What troubleshooting approach should you take first?

Accepted Answer

Inspect the door latch mechanism and door switch for mechanical wear or debris

Answer

Replace the entire pump

Answer

Update the pump firmware

Answer

Replace the IV tubing set

Question 3

During an electrical safety test, a patient monitor passes all leakage current tests under normal conditions but fails under single-fault (open ground) condition. What does this indicate?

Accepted Answer

The device has adequate basic insulation but relies on the ground connection for safety - internal insulation may be degrading

Answer

The device is safe to use as-is

Answer

The safety analyzer is malfunctioning

Answer

The device needs a new power cord only

Question 4

A ventilator's delivered tidal volume is consistently 15-20% lower than the set value. The circuit has been checked for leaks and none were found. What should you investigate next?

Accepted Answer

The flow sensor calibration and the expiratory valve function

Answer

The patient's lung compliance

Answer

The ventilator's display screen

Answer

The oxygen blender only

Question 5

Multiple physiologic monitors on the same nursing unit are showing intermittent signal artifact on ECG waveforms. Patient leads and cables have been replaced. What environmental factor should be investigated?

Accepted Answer

Electromagnetic interference from nearby equipment or construction

Answer

Room lighting level

Answer

Humidity level

Answer

Ambient sound level

Question 6

A defibrillator delivers energy but the delivered energy is consistently 20% below the selected setting. After verifying with a defibrillator analyzer, what is the most probable cause?

Accepted Answer

Degraded internal capacitor or relay contact oxidation in the energy delivery circuit

Answer

The analyzer needs calibration

Answer

The paddles need cleaning

Answer

The battery is at half charge