Domain 2

Artifacts and Troubleshooting

Identify signal problems, equipment failure and urgent physiologic findings.

4questionsExam mode

Question 1 of 4

Slow rolling baseline drift appears in several channels as the patient becomes warm and diaphoretic. Which artifact is most likely?

A.ECG artifactB.Electrode poppingC.Sweat artifactD.Pulse oximeter averaging

Question 2 of 4

A regular high-frequency signal appears simultaneously in many channels and decreases when a nearby power adapter is unplugged. What is the likely source?

A.Electrical interferenceB.REM eye movementsC.Periodic limb movementsD.Hypoventilation

Question 3 of 4

The nasal pressure channel becomes flat while thermistor airflow and effort continue normally. What should the technologist do first?

A.Score a central apneaB.Increase oxygen flowC.Inspect the cannula and transducer connectionD.Change the EEG montage

Question 4 of 4

An ECG tracing suddenly becomes a flat line, but pulse oximeter plethysmography and the patient remain normal. What is the best first response?

A.Check ECG electrodes and lead connections immediatelyB.Document as asystole without verificationC.Ignore the changeD.Start PAP titration

Reference framework

These are independently written educational questions aligned to the public BRPT blueprint and professional technical references. Always use the current official scoring manual, laboratory policy and clinician orders in practice.