RPSGT case studies
RPSGT · Put your knowledge to work in context.
The Registered Polysomnographic Technologist (RPSGT) credential is awarded by the Board of Registered Polysomnographic Technologists (BRPT), an independent nonprofit certification board that describes itself as setting the professional standard for sleep health professionals. First administered in 1979, the RPSGT is described by BRPT as the internationally recognized gold standard certification for sleep professionals; 16,728 certifications were current as of March 25, 2026, and BRPT reports credential holders in 34 countries. The RPSGT case studies are 5 cases and about 3,488 words.
1A Nine-Year-Old With Autism, Eczema, and a Co-Sleeping Parent
A 9-year-old boy with autism spectrum disorder and suspected obstructive sleep apnea arrives at 19:30 for an overnight polysomnography - his third attempt; the first two were aborted before lights-out. His mother reports two nights of poor sleep and a meltdown in the car.
744 words, about 4 min2Three Simultaneous Data Failures at 02:15
At 02:15 the technologist notes that the C4-M1 channel shows a dense, continuous 60 Hz artifact while F4-M1, C3-M2, and O2-M1 remain clean. At the same time the SpO2 value has read 92% without change for 12 minutes, although the plethysmographic waveform is full and regular.
736 words, about 4 min3Nine Seconds of Alpha in a Four-Minute Stretch
A 51-year-old woman's diagnostic study is being scored. From 03:12 to 03:16 the record is ambiguous: the EEG shows mixed-frequency, low-amplitude activity with a run of 8–13 Hz activity in the occipital channels lasting 9 seconds that begins 4 seconds after a body movement.
669 words, about 3 min4Central Apneas Appear During a CPAP Titration
A 47-year-old man with severe OSA (diagnostic AHI 78/hour, nadir SpO2 71%) is undergoing a CPAP titration. At 8 cm H2O the obstructive events disappear, but from 01:40 central apneas begin to appear; by 02:20 the central apnea index over the preceding 30 minutes is 22/hour, with a Cheyne-Stokes-like periodic breathing pattern, absent effort on both belts during the events, and desaturations to 84%.
685 words, about 3 min5An MSLT After Five Hours of Sleep and a Request to Omit a Medication
A 34-year-old woman is scheduled for a multiple sleep latency test following her overnight polysomnography. On intake she reports averaging 5–6 hours of sleep per night, rotating shift work with two night shifts in the past week, daily venlafaxine 150 mg for depression, and near-daily cannabis use at bedtime.
654 words, about 3 min