| Summary: | Objective To investigate the clinical characteristics and influencing factors of insomnia in perimenopausal women based on polysomnography (PSG). Methods A total of 52 perimenopausal women admitted to our psychological clinic due to insomnia were included in this study. According to the results of Pittsburgh sleep quality index (PSQI), they were divided into study group (PSQI≥7) and control group (PSQI < 7). Sleep status was recorded by polysomnography (PSG), and symptoms related to perimenopausal period were measured by menopause rating scale (MRS).The differences of PSG monitoring sleep-related indicators and MRS results were compared between the 2 groups, and the correlations of each sleep indicator with perimenopausal symptoms were analyzed. Results ① The total sleep time and sleep efficiency were significantly decreased in the perimenopausal women from the study group than those from the control group (P < 0.05). The former group had obviously longer sleep latency and wakefulness time when compared with the latter group (P < 0.05). ② These perimenopausal women had the clinical feature of rapid eye movement (REM) sleep behavior, which were characterized by decreased total time of REM sleep, decreased proportion of REM sleep, prolonged latency of REM sleep, and increased frequency of REM to wakefulness in the study group when compared with the control group (P < 0.05). ③The total MRS score, somatic symptom score, psychological symptom score and genitourinary system score were 26.69±5.13, 9.49±2.92, 10.34±2.95 and 6.86±2.89, respectively, in the study group, which were all higher than those of the control group (P < 0.05). ④The proportion of REM sleep and the total time of REM sleep were negatively correlated with depression (P < 0.05), while the latency of REM sleep was positively correlated with anxiety and sexual life quality (P < 0.05). Conclusion Insomnia in perimenopausal women is characterized by REM sleep disorder, and REM sleep is closely related to anxiety, depression and sexual life quality.
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