Scientists of Sechenov University have introduced method of quantitative analysis of “daytime sleepiness”. It allows to identify actual drowsiness (hypersomnia) from another condition with similar symptoms, and as a result to prescribe effective and safe treatment.
The problem of daytime sleepiness is crucial for modern society: about 25% of people live with “sleep pressure” during the day. It usually leads to low productivity and/or loss of coordination.
Nevertheless, “daytime sleepiness” doesn’t always mean an extreme tendency to fall asleep. It more often takes for fatigue or even basic laziness.
A sleep disorder diagnostic tool called Multiple Sleep Latency Test (MSLT) helps to distinguish hypersomnia from another condition with similar symptoms. The MSLT is a full-day test that consists of five scheduled naps. During each nap trial, a patient lies quietly in bed and try to go to sleep. The purpose of such tests is to determine speed of falling asleep. If a patient suffers from hypersomnia, an average time to fall asleep is usually less than 8 minutes. If a patient complains of daytime drowsiness, but falls asleep not so fast, it is not a problem of sleep or wakefulness.
We became the first who have started to popularize this method in Russia. It turned out that more than 30% patients with hypersomnia are misdiagnosed. Then such misdiagnosis has a serious impact on further treatment. Patients with hypersomnia need to pay attention to night sleep: try to improve it or check signs of neurological diseases. If there’re similar hidden disease symptoms, you should treat these disorders,
comments Associate Professor Mikhail Poluektov,
Head of the Department of Sleep Medicine at Sechenov University.