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Study Objectives: Although wrist-worn consumer wearables are widely used for home sleep monitoring, few have been validated. It is unclear whether consumer wearables could be an alternative to Actiwatch. This study aimed to establish and validate an automatic sleep staging system (ASSS) utilizing photoplethysmography and acceleration data collected from a wrist-worn wearable device., Methods: Seventy-five participants from a community population underwent overnight polysomnography (PSG) while wearing a smartwatch (MT2511) and Actiwatch Spectrum Plus (Philips Respironics, Inc; Murrysville, PA, USA). Photoplethysmography and acceleration data collected from the smartwatches were utilized to build a 4-stage (wake, light sleep, deep sleep, and rapid eye movement [REM] sleep) classifier, which was validated against PSG. The performance of the sleep/wake classifier was compared with Actiwatch. All analyses were conducted separately for participants with PSG sleep efficiency (SE) ≥ 80% and SE < 80%., Results: The 4-stage classifier and PSG showed fair overall epoch-by-epoch agreement (kappa, 0.55; 95% confidence interval, 0.52 to 0.57). The deep sleep and REM times were comparable between ASSS and PSG, while ASSS underestimated the wake time and overestimated the light sleep time among participants with SE < 80%. Moreover, ASSS underestimated sleep-onset latency and wake after sleep onset and overestimated total sleep time and SE among participants with SE < 80%, while all were comparable among participants with SE ≥ 80%. The biases were smaller for ASSS than for Actiwatch., Conclusions: Our photoplethysmography- and acceleration-based ASSS was reliable for participants with SE ≥ 80% and had a smaller bias than Actiwatch among those with SE < 80%. Thus, ASSS may be a promising alternative to Actiwatch., Clinical Trial Registration: Registry: ClinicalTrials.gov; Name: Validation of Sleep Healthcare System; URL: https://clinicaltrials.gov/study/NCT04252482; Identifier: NCT04252482., Citation: Liu P-K, Ting N, Chiu H-C, et al. Validation of photoplethysmography- and acceleration-based sleep staging in a community sample: comparison with polysomnography and Actiwatch. J Clin Sleep Med . 2023;19(10):1797-1810., (© 2023 American Academy of Sleep Medicine.)

Abstract: Purpose: To examine the association between snoring, sleep quality, quantity, and blood pressure in third‐trimester normotensive pregnant women. Design: This study was a cross‐sectional analysis of two cohorts of healthy pregnant women recruited from a prenatal clinic in a medical center in Northern Taiwan. Methods: A total of 322 women reported sociodemographic and health characteristics in a structured interview and wore a wrist actigraph on their nondominant wrist for 7 consecutive days to assess objective sleep patterns. The women's resting blood pressures were measured while seated in the clinic by trained personnel using an electronic sphygmomanometer. Findings: One hundred thirty‐three (41.3%) women reported snoring. Ninety‐three women (28.9%) had <6 hr of nighttime sleep, with only 95 (29.5%) women averaging 7 or more hours of nighttime sleep. In the univariate analyses, snoring was positively associated with systolic and diastolic blood pressure as well as mean arterial pressure levels (p < .05). In the multivariate analyses, snoring remained as a significant predictor of higher diastolic blood pressure (β = 2.07, p < .05) and mean arterial pressure levels (β = 2.00, p < .05), after adjustment for age, parity, gestational age, body mass index before pregnancy, and sleep quantity and quality by actigraphy. Conclusions: Snoring is a highly prevalent condition experienced by healthy third‐trimester pregnant women and is associated with elevated blood pressure. Clinical Relevance: Clinical assessment and screening of snoring are of utmost importance in obstetric nursing practice to potentially prevent or reduce the associated adverse cardiovascular consequences in women during pregnancy. [ABSTRACT FROM AUTHOR]

Background Daytime sleepiness is a frequent complaint in women during pregnancy. It has also been linked to negative obstetric consequences. Although high prevalence of excessive daytime sleepiness throughout pregnancy is well-documented, neither the causes of persistent daytime sleepiness nor new-onset daytime sleepiness during pregnancy have been investigated. Identifying predictive factors may play an important role in the management of daytime sleepiness in pregnant women and improve prenatal care and maternal-fetal outcomes. Objectives To examine first-trimester maternal characteristics associated with the persistence and new-onset daytime sleepiness in pregnant women. Design A longitudinal, prospective cohort design. Setting One medical center in Taipei, Taiwan and participating women’s homes. Participants A total of 204 pregnant women. Methods First-trimester pregnant women recruited from an outpatient obstetric clinic at a medical center provided socio-demographic and health information, wore an actigraphy monitor for 7 days, and completed sleep, mood, and daytime sleepiness questionnaires. Data were collected again when the women were in the second and third trimester. Results Thirty-one (15.2%) women experienced excessive daytime sleepiness that persisted across all three trimesters. Nulliparous women and women who snored in the first trimester were 2.28 and 2.10 times more at risk of being classified of persistent daytime sleepiness than multiparous women and women who did not snore in the first trimester, respectively. Thirty-one (15.2%) women developed new-onset daytime sleepiness with advancing gestation. Women were more likely to develop new-onset daytime sleepiness if they worked longer hours per week (OR = 1.04, p < 0.001), if they reported snoring (OR = 6.75, p < 0.001), and if they had elevated depressive symptoms in the first trimester of pregnancy (OR = 1.09, p = 0.01). Conclusions Snoring in the first trimester is involved in both the persistence and new-onset of daytime sleepiness with elevated depressive symptoms related to new-onset daytime sleepiness in pregnant women. Findings suggest that intervention strategies for alleviating daytime sleepiness in pregnant women should focus on managing snoring and symptoms of depression in early trimesters with special attention to nulliparous and employed women. [ABSTRACT FROM AUTHOR]

Background Sleep disturbance, depression, and daytime sleepiness are among the most prevalent symptoms reported by women during pregnancy. However, available data on the association between sleep disturbances and symptoms of depression and daytime sleepiness in pregnant women are sparse and methodological limitations have been acknowledged. The purpose of the study was to examine objective and self-reported sleep disturbances and symptoms of depression and daytime sleepiness in a group of healthy pregnant women. Methods A total of 274 third-trimester pregnant women wore a wrist actigraph continuously for 7 days to assess objective sleep quality and quantity. Self-reported sleep quality was assessed by the Pittsburgh Sleep Quality Index ( PSQI), with self-reported poor sleep quality defined as a PSQI score more than 5. The Center for Epidemiologic Studies-Depression Scale ( CES-D) and Epworth Sleepiness Scale were used to evaluate symptoms of depression and daytime sleepiness, respectively. Results Sixty-four (23.4%) women were at risk for clinical depression and 69 (25.2%) had daytime sleepiness. Risk of clinically meaningful depressive symptomatology was significantly increased in women with objective total nighttime sleep less than 6 hours ( OR 2.53 [95% CI 1.26-5.08]) and self-reported poor sleep quality ( OR 3.31 [95% CI 1.74-6.30]), even after multiple adjustment. Neither objective nor self-reported sleep disturbances increased daytime sleepiness in this group of pregnant women. Discussion Both objective nighttime sleep less than 6 hours and self-reported poor sleep quality in healthy third-trimester pregnant women is associated with significant risks for clinical depression. Improving sleep would likely be associated with a reduction in depression symptom severity and an attenuation of the prevalence of depression in pregnant women. [ABSTRACT FROM AUTHOR]

Background Sleep disturbances are common in women, especially during pregnancy. Previous studies have confirmed the importance of sleep disturbances as a risk factor of adverse pregnancy outcomes and the need for screening and treatment of inadequate sleep. These reports, however, did not examine health-related quality of life which may be affected by sleep long before adverse clinical consequences are detectable in women during pregnancy. Objectives To examine the cross-sectional and longitudinal association between sleep and health-related quality of life in pregnant women. Design A prospective observational study. Setting A university-affiliated hospital in Taiwan and participants’ homes. Participants A total of 164 pregnant women completed questionnaires and wore a wrist actigraphy monitor for 7 days each trimester. Methods Objective sleep was measured by actigraphy, subjective sleep was measured by the Pittsburgh Sleep Quality Index, and health-related quality of life was measured using the SF-12v2 questionnaire across three trimesters. Multiple linear regression analyses were performed to evaluate the cross-sectional and longitudinal associations between sleep and health-related quality of life. Results Sixty-four (39.0%) women consistently had an average sleep efficiency < 85% by actigraphy and 40 (24.4%) had a Pittsburgh Sleep Quality Index global score > 5 in all three trimesters. Cross-sectionally, more actigraphic daytime sleep ( p = 0.04) and better subjective sleep quality ( p < 0.01) were associated with better physical health-related quality of life in first-trimester pregnant women. Better actigraphic sleep efficiency ( p = 0.04) and better subjective sleep quality ( p < 0.01) were associated with better mental health-related quality of life in second-trimester pregnant women. Longer actigraphic total nighttime sleep ( p < 0.01) and better subjective sleep quality ( p < 0.01) were associated with better mental health-related quality of life in third-trimester pregnant women. Longitudinally, first-trimester actigraphic total nighttime sleep ( p < 0.05) and subjective sleep quality ( p < 0.01) predicted mental health-related quality of life in the second and third trimester. Conclusions Sleep disturbances are a highly prevalent and persistent problem in pregnant women. Adequate sleep is essential for women at all pregnancy stages and improving nocturnal sleep quantity and quality in early gestation is of utmost importance for an optimal health-related quality of life later in pregnancy. [ABSTRACT FROM AUTHOR]

Sleep disturbances are one of the most frequent chief complaints brought to the healthcare professionals during routine prenatal care visits. Sleep and mood disturbances are often intertwined, and depression in particular is a leading cause of disability and disease burden worldwide with women more likely to be affected than men. However, limited studies have prospectively investigated the association between sleep disturbances and longitudinal risk of depression in pregnant women, with no studies using actigraphy to objectively estimate daytime and nighttime sleep duration and the extent of sleep disruption. To examine the predictive and longitudinal association of objective actigraphic and subjective sleep disturbances with depressive symptoms in pregnant women. A prospective observational cohort study. 204 1st trimester pregnant women recruited from a university-affiliated hospital provided socio-demographic and health information, wore a wrist actigraph for 7 days, and completed Pittsburgh Sleep Quality Index, Center for Epidemiologic Studies - Depression Scale, and Epworth Sleepiness Scale. Identical data collection procedures were implemented again in the 2nd and 3rd trimester, with each data collection scheduled at least 8 weeks apart. We estimated unadjusted and multivariable adjusted odds ratios and 95% confidence intervals to evaluate various types of sleep disturbances at 1st trimester and risk of depression at follow-ups. 121 (59.3%) 1st trimester women had a sleep efficiency of < 85% by actigraphy, and 92 (45.1%) had Pittsburgh Sleep Quality Index global scores > 5 indicative of poor sleep quality. In multivariable adjusted models, 1st trimester objectively measured sleep efficiency < 85% was associated with 2.71-, 3.87-, and 5.27-fold increased odds having risk of depression at 2nd trimester, 3rd trimester, and both 2nd and 3rd trimesters, respectively. Healthy pregnant women experience both objective and subjective sleep disturbances during the early trimester, with a substantial proportion of them also having high depressive symptoms throughout the pregnancy. Objectively assessed poor sleep quality in the 1st trimester, but not self-reported characteristics of disturbed sleep, may play a role in the development of both elevated and persistent high depressive symptoms in pregnancy. Future studies using objective sleep measurements and clinical diagnostic interviews are warranted to examine whether an early intervention aiming at improving sleep may help reduce high depressive symptom risk and lower depression rate in women during pregnancy. Tweetable abstract : Objectively assessed poor sleep efficiency in the 1st trimester predicts both elevated and persistent high depressive symptoms in pregnancy. [ABSTRACT FROM AUTHOR]