Polysomnographic Technologist, Registered
Posted Sep 18, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about a time you taught a patient how to use CPAP at home.
What they are checking: Whether they teach patients to use CPAP comfortably at home, since good early education strongly affects whether patients keep using it.
Tell me about a time you found an error in your own work. What did you do?
What they are checking: Whether they own and correct their mistakes honestly, since errors in sleep study data can lead to the wrong diagnosis or treatment.
What would you do
During a titration study, the patient keeps having apneas at the current CPAP pressure. What do you do?
What they are checking: Whether they follow titration protocols correctly to find an effective pressure, since the prescription depends on this overnight work.
A patient is anxious and cannot fall asleep in the lab. How do you help?
What they are checking: Whether they can help anxious patients relax enough to sleep, since a study without enough sleep may need to be repeated.
What would you do if a patient developed a dangerous heart rhythm during a study?
What they are checking: Whether they recognize dangerous heart rhythms and follow emergency protocols calmly, since they are often the only clinician present overnight.
About the work
Walk me through how you set up a patient for an overnight polysomnogram.
What they are checking: Whether they place electrodes and sensors correctly for accurate data, since poor setup can make an entire night's study unusable.
How does a multiple sleep latency test differ from a maintenance of wakefulness test?
What they are checking: Whether they understand the purpose and procedure of daytime sleep tests, since each answers a different clinical question for the physician.
How do you troubleshoot a signal that suddenly becomes noisy during a study?
What they are checking: Detailed equipment knowledge and quick fixes, which the posting stresses.
How do you score respiratory events accurately?
What they are checking: Whether they know scoring rules well and apply them carefully, since diagnosis and treatment depend on accurate event counts.
How do you explain home sleep testing to a patient so they get a usable result?
What they are checking: Whether they explain home sleep testing clearly enough that patients get usable results, since failed home studies delay diagnosis.
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Practice this out loudThe full job description
As published by Sanford Health.