Artifacts and Troubleshooting

Question 1 of 50Basic

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

Question 2 of 50Basic

A sleep laboratory competency review presents this case: Slow rolling baseline drift appears in several channels as the patient becomes warm and diaphoretic. Which artifact is most likely?

Question 3 of 50Basic

A second technologist independently reviews the following scenario: Slow rolling baseline drift appears in several channels as the patient becomes warm and diaphoretic. Which artifact is most likely?

Question 4 of 50Basic

During a quality-assurance conference, the team considers this question: Slow rolling baseline drift appears in several channels as the patient becomes warm and diaphoretic. Which artifact is most likely?

Question 5 of 50Basic

A board-style practice form presents the following case: Slow rolling baseline drift appears in several channels as the patient becomes warm and diaphoretic. Which artifact is most likely?

Question 6 of 50Moderate

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

Question 7 of 50Moderate

A sleep laboratory competency review presents this case: A regular high-frequency signal appears simultaneously in many channels and decreases when a nearby power adapter is unplugged. What is the likely source?

Question 8 of 50Moderate

A second technologist independently reviews the following scenario: A regular high-frequency signal appears simultaneously in many channels and decreases when a nearby power adapter is unplugged. What is the likely source?

Question 9 of 50Moderate

During a quality-assurance conference, the team considers this question: A regular high-frequency signal appears simultaneously in many channels and decreases when a nearby power adapter is unplugged. What is the likely source?

Question 10 of 50Moderate

A board-style practice form presents the following case: A regular high-frequency signal appears simultaneously in many channels and decreases when a nearby power adapter is unplugged. What is the likely source?

Question 11 of 50Moderate

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

Question 12 of 50Moderate

A sleep laboratory competency review presents this case: The nasal pressure channel becomes flat while thermistor airflow and effort continue normally. What should the technologist do first?

Question 13 of 50Moderate

A second technologist independently reviews the following scenario: The nasal pressure channel becomes flat while thermistor airflow and effort continue normally. What should the technologist do first?

Question 14 of 50Moderate

During a quality-assurance conference, the team considers this question: The nasal pressure channel becomes flat while thermistor airflow and effort continue normally. What should the technologist do first?

Question 15 of 50Moderate

A board-style practice form presents the following case: The nasal pressure channel becomes flat while thermistor airflow and effort continue normally. What should the technologist do first?

Question 16 of 50Advanced

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

Question 17 of 50Advanced

A sleep laboratory competency review presents this case: An ECG tracing suddenly becomes a flat line, but pulse oximeter plethysmography and the patient remain normal. What is the best first response?

Question 18 of 50Advanced

A second technologist independently reviews the following scenario: An ECG tracing suddenly becomes a flat line, but pulse oximeter plethysmography and the patient remain normal. What is the best first response?

Question 19 of 50Advanced

During a quality-assurance conference, the team considers this question: An ECG tracing suddenly becomes a flat line, but pulse oximeter plethysmography and the patient remain normal. What is the best first response?

Question 20 of 50Advanced

A board-style practice form presents the following case: An ECG tracing suddenly becomes a flat line, but pulse oximeter plethysmography and the patient remain normal. What is the best first response?

Question 21 of 50Moderate

A sharp deflection appears in an EEG channel at exactly the same time as each QRS complex. What is the most likely artifact?

Question 22 of 50Moderate

A sleep laboratory competency review presents this case: A sharp deflection appears in an EEG channel at exactly the same time as each QRS complex. What is the most likely artifact?

Question 23 of 50Moderate

A second technologist independently reviews the following scenario: A sharp deflection appears in an EEG channel at exactly the same time as each QRS complex. What is the most likely artifact?

Question 24 of 50Moderate

During a quality-assurance conference, the team considers this question: A sharp deflection appears in an EEG channel at exactly the same time as each QRS complex. What is the most likely artifact?

Question 25 of 50Moderate

A board-style practice form presents the following case: A sharp deflection appears in an EEG channel at exactly the same time as each QRS complex. What is the most likely artifact?

Question 26 of 50Moderate

An EEG channel shows intermittent abrupt high-amplitude transients after an electrode becomes loose. Which artifact is most likely?

Question 27 of 50Moderate

A sleep laboratory competency review presents this case: An EEG channel shows intermittent abrupt high-amplitude transients after an electrode becomes loose. Which artifact is most likely?

Question 28 of 50Moderate

A second technologist independently reviews the following scenario: An EEG channel shows intermittent abrupt high-amplitude transients after an electrode becomes loose. Which artifact is most likely?

Question 29 of 50Moderate

During a quality-assurance conference, the team considers this question: An EEG channel shows intermittent abrupt high-amplitude transients after an electrode becomes loose. Which artifact is most likely?

Question 30 of 50Moderate

A board-style practice form presents the following case: An EEG channel shows intermittent abrupt high-amplitude transients after an electrode becomes loose. Which artifact is most likely?

Question 31 of 50Moderate

The oxygen saturation suddenly falls to 70%, but the pleth waveform is poor and the patient is moving. What should the technologist do first?

Question 32 of 50Moderate

A sleep laboratory competency review presents this case: The oxygen saturation suddenly falls to 70%, but the pleth waveform is poor and the patient is moving. What should the technologist do first?

Question 33 of 50Moderate

A second technologist independently reviews the following scenario: The oxygen saturation suddenly falls to 70%, but the pleth waveform is poor and the patient is moving. What should the technologist do first?

Question 34 of 50Moderate

During a quality-assurance conference, the team considers this question: The oxygen saturation suddenly falls to 70%, but the pleth waveform is poor and the patient is moving. What should the technologist do first?

Question 35 of 50Moderate

A board-style practice form presents the following case: The oxygen saturation suddenly falls to 70%, but the pleth waveform is poor and the patient is moving. What should the technologist do first?

Question 36 of 50Moderate

Thoracic and abdominal effort channels become identical flat lines while airflow and the patient's breathing remain visible. What is the best first action?

Question 37 of 50Moderate

A sleep laboratory competency review presents this case: Thoracic and abdominal effort channels become identical flat lines while airflow and the patient's breathing remain visible. What is the best first action?

Question 38 of 50Moderate

A second technologist independently reviews the following scenario: Thoracic and abdominal effort channels become identical flat lines while airflow and the patient's breathing remain visible. What is the best first action?

Question 39 of 50Moderate

During a quality-assurance conference, the team considers this question: Thoracic and abdominal effort channels become identical flat lines while airflow and the patient's breathing remain visible. What is the best first action?

Question 40 of 50Moderate

A board-style practice form presents the following case: Thoracic and abdominal effort channels become identical flat lines while airflow and the patient's breathing remain visible. What is the best first action?

Question 41 of 50Moderate

A nasal pressure waveform clips at the top and bottom of the display. What technical problem is most likely?

Question 42 of 50Moderate

A sleep laboratory competency review presents this case: A nasal pressure waveform clips at the top and bottom of the display. What technical problem is most likely?

Question 43 of 50Moderate

A second technologist independently reviews the following scenario: A nasal pressure waveform clips at the top and bottom of the display. What technical problem is most likely?

Question 44 of 50Moderate

During a quality-assurance conference, the team considers this question: A nasal pressure waveform clips at the top and bottom of the display. What technical problem is most likely?

Question 45 of 50Moderate

A board-style practice form presents the following case: A nasal pressure waveform clips at the top and bottom of the display. What technical problem is most likely?

Question 46 of 50Moderate

A channel becomes noisy only when the patient touches a metal bed rail. What should the technologist suspect?

Question 47 of 50Moderate

A sleep laboratory competency review presents this case: A channel becomes noisy only when the patient touches a metal bed rail. What should the technologist suspect?

Question 48 of 50Moderate

A second technologist independently reviews the following scenario: A channel becomes noisy only when the patient touches a metal bed rail. What should the technologist suspect?

Question 49 of 50Moderate

During a quality-assurance conference, the team considers this question: A channel becomes noisy only when the patient touches a metal bed rail. What should the technologist suspect?

Question 50 of 50Moderate

A board-style practice form presents the following case: A channel becomes noisy only when the patient touches a metal bed rail. What should the technologist suspect?