Certified Polysomnographic Technician (CPSGT) 2025 – 400 Free Practice Questions to Pass the Exam

Nocturnal oximetry is often used in conjunction with polysomnography to evaluate sleep apnea. This testing involves monitoring the levels of oxygen in the blood throughout the night. Sleep apnea is characterized by interruptions in breathing during sleep, often leading to decreased blood oxygen levels. By assessing these oxygen saturation levels alongside polysomnographic data, healthcare providers can gain valuable insights into the severity of sleep apnea and its impact on overall health.

While electromyography measures muscle activity and could contribute to understanding sleep disorders, it does not specifically assess sleep apnea. Home sleep apnea testing is used as a separate diagnostic tool but does not occur alongside polysomnography in a traditional sleep study setup. Blood pressure monitoring, although relevant to overall health and can be affected by sleep apnea, is not a direct method for diagnosing or assessing sleep apnea specifically during polysomnography. Thus, nocturnal oximetry is the most relevant and informative adjunct diagnostic tool in this context.