睡眠呼吸暂停低通气综合征患者多导睡眠图特征及日间嗜睡分析

目的 通过对男女睡眠呼吸暂停低通气综合征（OSA）患者多导睡眠图特征及日间嗜睡程度的对比,探究OSA患者的多导睡眠图特征及日间嗜睡程度是否存在性别差异.方法 选取2011年5月～2013年2月在华西医院睡眠中心就诊,年龄在18～65岁之间,经整夜多导睡眠呼吸监测确诊为OSA（睡眠呼吸紊乱指数,AHI≥5次/h）的患者进行回顾性分析.按性别分为男性OSA患者及女性OSA患者两组,并对两组的年龄及AHI进行配对.比较两组患者多导睡眠图所示睡眠结构、缺氧状况、多次小睡潜伏时间试验（MSLT）及Epworth嗜睡量表（ESS）评分的差异.结果 共258名患者纳入研究,其中男性129名,平均年龄（49.4±11.3）岁,平均AHI指数（35.3±26.7）次/h;女性129名,平均年龄（49.7±11.8）岁,平均AHI指数（34.1±26.7）次/h.男女OSA患者相比,女性患者睡眠潜伏期更长[（19.2± 28.1）vs.（12.9±12.9）min],睡眠效率更低[（78.5±14.1）% vs.（84.5±9.7）%],睡后觉醒时间更长[（89.8±63.8）vs.（66.1±48.4）min],总睡眠时间更短[（396.9±78.8）vs.（ 427.6± 56.1）min],多次小睡平均潜伏期更长[（9.9±3.39）vs.（9.3±3.7）min],（P均＜0.05）.男女患者呼吸事件中低通气所占比例[（39.9±26.3）% vs.（53.4±27.7）%],阻塞性呼吸暂停所占比例为[（50.81±25.88）% vs.（41.03±26.72）%],（P均＜0.05）.结论 在AHI严重程度相一致的情况下,女性患者睡眠质量更差,但男性患者日间客观嗜睡程度更重.呼吸事件中女性患者多以低通气为主,而男性患者多以阻塞性呼吸暂停为主.     

The relationships between improvements in daytime sleepiness,fatigue and depression and psychomotor vigilance task testing with CPAP use in patients with obstructive sleep apnea

ObjectiveThe purpose of this study was to determine if the subjective improvements in daytime sleepiness, fatigue and depression experienced by patients with obstructive sleep apnea (OSA) with continuous positive airway pressure (CPAP) therapy predict an objective improvement in vigilance, and whether patients with mild-to-moderate OSA differ from patients with severe OSA in this regard.MethodsA total of 182 patients underwent psychomotor vigilance task (PVT) testing and measurements of subjective daytime sleepiness, fatigue and depression at baseline and after a minimum of one month of adherent CPAP use at an adequate pressure.ResultsPatients with both mild-to-moderate (n = 92) and severe (n = 90) OSA experienced improvements in subjective daytime sleepiness, fatigue and depression, but objective improvement in vigilance was only seen in patients with severe OSA. In patients with severe OSA, while a correlation was found between improvements in daytime sleepiness and some PVT parameters, changes in subjective daytime sleepiness, fatigue and depression scores were not predictive of objective improvement in vigilance while controlling for all these subjective symptoms and for age, gender, body mass index, apnea-hypopnea index/respiratory event index and total sleep time/total recording time with pulse oximetry below 90%.ConclusionsWe found no predictive relationship between subjective improvements in daytime sleepiness, fatigue and depression and objective vigilance with CPAP use in patients with OSA. These results suggest that subjective complaints of daytime impairment and objective measures of vigilance in patients with OSA should be assessed separately while evaluating the efficacy of CPAP therapy on daytime functioning.     

Moderate-to-severe obstructive sleep apnea is associated with cerebral small vessel disease

BackgroundCerebral small vessel disease (SVD) is associated with increased risk of cerebral infarction and hemorrhage. Obstructive sleep apnea (OSA) is known to increase the risk of cerebrovascular disease. This study aimed to investigate the association between cerebral SVD and severity of OSA.MethodsA total of 170 patients were included from the patient registry at the present Sleep Center; these patients underwent both magnetic resonance imaging (MRI) of the brain and polysomnography (PSG) for suspected OSA. The presence and burden of white matter hyperintensities (WMHs), asymptomatic lacunar infarctions (ALIs), cerebral microbleeds (CMBs), and perivascular spaces (PVSs) were determined by MRI, and their relationships with the apnea–hypopnea index (AHI), as determined by PSG, were investigated.ResultsAmong the 170 patients, 25 (14.7%) had high-grade WMHs, 21 (12.4%) had ALIs, 21 (12.4%) had CMBs, and 34 (20.0%) had high-grade PVSs. In the multivariable analysis, after adjusting for factors including age, sex, and other variables for which p <0.1 in univariable analysis (hypertension, diabetes mellitus, previous stroke, minimal SaO₂ and arousal index), moderate-to-severe OSA was associated with high-grade WMHs (odds ratio [OR] 4.72; 95% confidence interval [CI] 1.14–19.47), CMBs (OR 3.47; 95% CI 0.89–15.18), or high-grade PVSs (OR 3.64; 95% CI 1.02–13.01), but not with ALIs. The total SVD score was independently associated with increased AHI (p = 0.017), particularly in patients with moderate-to-severe OSA (β [standard error] = 0.448 (0.204), p = 0.030].ConclusionModerate-to-severe OSA is positively associated with multiple indicators of cerebral SVD, including WMHs, CMBs, and PVSs.     

阻塞性睡眠呼吸暂停患者临床特征与焦虑抑郁的相关分析

目的探索阻塞性睡眠呼吸暂停(OSA)患者的临床特征及其与焦虑抑郁症状的关系,为进一步研究两者间具体的发生机制提供参考。方法选取2018年3月-9月在四川省精神卫生中心行多导睡眠监测的患者238例,根据呼吸暂停低通气指数(AHI)分为OSA组(n=130)和非OSA组(n=108)。采用自制一般资料和临床症状调查问卷、Epworth嗜睡量表(ESS)和匹兹堡睡眠质量指数量表(PSQI)评定患者的临床症状和睡眠质量;采用汉密尔顿焦虑量表(HAMA)和汉密尔顿抑郁量表24项版(HAMD-24)评定患者的焦虑和抑郁症状。分析OSA组临床症状与焦虑抑郁的相关性。结果 OSA组打鼾(76.9%)、夜间憋醒(25.4%)、认知功能减退(76.9%)者均比非OSA组(分别为41.7%、13.0%、63.9%)多,且OSA组症状持续时间更长,差异均有统计学意义(P0.05或0.01)。OSA组ESS、HAMA和HAMD-24评分均高于非OSA组(P均0.01)。相关分析显示,OSA组临床症状持续时间与HAMA评分呈正相关(r=0.212,P=0.016);PSQI评分与HAMA、HAMD-24评分均呈正相关(r=0.217、0.211,P=0.014、0.017)。结论 OSA患者常伴有打鼾、夜间憋醒、认知功能减退,且症状持续时间仅与其焦虑水平有关,睡眠质量与焦虑、抑郁的关系均较密切。     

Effect of continuous positive airway pressure treatment on seizure control in patients with obstructive sleep apnea and epilepsy

In patients with epilepsy, improvement in seizure control with treatment of coexisting obstructive sleep apnea (OSA) has been reported, but there is lack of data on the effect of continuous positive airway pressure (CPAP) compliance on seizure control in these patients. We examined the variability in seizure frequency in patients who were CPAP compliant and those who were not CPAP compliant. We undertook a retrospective review of clinical and polysomnographic data of adult patients with OSA and epilepsy seen at the Boston University Medical Center Epilepsy and Sleep Clinics between 2000 and 2010. Data were reviewed for CPAP compliance and seizure frequency after at least 6 months of CPAP use. Only patients with no changes in antiepileptic drug regimens during CPAP trial were included. Of the 660 patients identified, 41 fulfilled inclusion criteria, of whom 28 were CPAP compliant and 13 were not CPAP compliant. In the compliant group, CPAP use led to decreased seizure frequency from 1.8 per month to 1 per month (p = 0.01). In the noncompliant group, no significant difference in seizure frequency was noted between baseline (2.1 per month) and at follow-up (1.8 per month, p = 0.36). Sixteen of 28 CPAP-compliant subjects were seizure free, whereas only 3 of 13 non-CPAP compliant subjects were seizure free [relative risk (RR) 1.54, p = 0.05]. Patients with epilepsy and OSA not compliant with CPAP treatment are at higher risk of seizures than are CPAP-compliant patients. To validate this observation, further prospective studies are warranted.     

Diurnal variation in daytime sleepiness of patients with sleep apnea syndrome

Diurnal variations in daytime sleepiness were studied in 26 men with sleep apnea syndrome (SAS) [age, 41.7 +/- 9.9 years (mean +/- SD); body mass index, 30.0 +/- 6.2 kg/m2; Epworth Sleepiness Score, 8.7 +/- 4.1; apnea-hypopnea index, 50.2 +/- 22.0]. Sleep latencies measured at 09.00 h, 11.00 h, 13.00 h, 15.00 h, and 17.00 h were 3.4 +/- 3.6 min, 4.7 +/- 5.5 min, 5.2 +/- 4.4 min, 5.3 +/- 5.4 min, and 9.3 +/- 7.2 min, respectively (ANOVA, P < 0.05). Daytime sleepiness in patients with SAS was more pronounced in the morning than in the afternoon and evening.     

伴中重度阻塞性睡眠呼吸暂停低通气综合征的抑郁症患者多导睡眠监测特点

目的 探讨伴中重度阻塞性睡眠呼吸暂停低通气综合征（OSAHS）的抑郁症患者多导睡眠监测（PSG）特点。方法 回顾性分析2017年12月-2019年10月在苏州市广济医院睡眠医学中心完成整夜多导睡眠监测（PSG）的门诊和住院患者以及健康体检人群,从中筛选出四组被试,分别为伴中重度OSAHS的抑郁症患者（n=31）、不伴OSAHS的抑郁症患者（n=79）、中重度OSAHS患者（n=96）和正常对照组（n=32）。比较四组被试睡眠进程相关指标（总睡眠时间、睡眠潜伏期、觉醒次数）和睡眠结构相关指标（N1、N2、N3期及REM期占总睡眠时间的比例,REM潜伏期、REM期持续时间）以及睡眠呼吸相关指标（氧减指数）等参数。结果 睡眠进程方面,四组被试总睡眠时间、睡眠潜伏期和觉醒次数差异均有统计学意义（F=2.874、3.959、12.291,P<0.05或0.01）。睡眠结构方面,四组被试N2期、N3期占总睡眠时间比例差异均有统计学意义（F=13.885、48.013,P均<0.01）;四组被试REM潜伏期、REM期持续时间、REM期占总睡眠时间比例差异均有统计学意义（F=41.492、11.827、10.552,P均<0.01）。睡眠呼吸相关指标方面,四组被试氧减指数差异有统计学意义（F=170.585,P<0.05）。结论 伴中重度OSAHS的抑郁症患者存在严重的睡眠进程和结构紊乱,同时伴有更频繁和更严重的呼吸相关事件。     

The impact of obstructive sleep apnea and daytime sleepiness on work limitation

BACKGROUND: Many patients with obstructive sleep apnea (OSA) participate in the work force. However, the impact of OSA and sleepiness on work performance is unclear. METHODS: To address this issue, we administered the Epworth Sleepiness Scale (ESS), the Work Limitations Questionnaire (WLQ), and an occupational survey to patients undergoing full-night polysomnography for the investigation of sleep-disordered breathing. Of 498 patients enrolled in the study, 428 (86.0%) completed the questionnaires. Their mean age+/-standard deviation (SD) was 49+/-12 years, mean body mass index (BMI) was 31+/-7 kg/m(2) mean apnea hypopnea index (AHI) was 21+/-22 events/h, and mean ESS score was 10+/-5. Subjects worked a mean of 39+/-18 h per week. The first 100 patients to complete the survey were followed up at two years. RESULTS: In the group as a whole, there was no significant relationship between severity of OSA and the four dimensions of work limitation. However, in blue-collar workers, significant differences were detected between patients with mild OSA (AHI 5-15/h) and those with severe OSA (AHI>30/h) with respect to time management (limited 23.1% of the time vs. 43.8%, p=0.05) and mental/personnel interactions (17.9% vs. 33.0%, p=0.05). In contrast, there were strong associations between subjective sleepiness (as assessed by the ESS) and three of the four scales of work limitation. That is, patients with an ESS of 5 had much less work limitation compared to those with an ESS 18 in terms of time management (19.7% vs. 38.6 %, p<0.001), mental-interpersonal relationships (15.5% vs. 36.0%, p<0.001) and work output (16.8% vs. 36.0%; p<0.001). Of the group followed up, 49 returned surveys and 33 who were using continuous positive airway pressure (CPAP) showed significant improvements between the initial and second follow-up in time management (26% vs. 9%, p=0.0005), mental-interpersonal relationships (16% vs. 11.0%, p=0.014) and work output (18% vs. 10%; p<0.009). CONCLUSION: We have demonstrated a clear relationship between excessive sleepiness and decreased work productivity in a population referred for suspected sleep-disordered breathing. Screening for sleepiness and sleep-disordered breathing in the workplace has the potential to identify a reversible cause of low work productivity.     

Daytime sleepiness and automobile accidents in patients with obstructive sleep apnea syndrome

Abstract We evaluated the rate of automobile accidents and daytime sleepiness using the Epworth sleepiness scale (ESS) in 44 patients with obstructive sleep apnea syndrome (OSAS). We defined the automobile accident score as a sum of two points for every one automobile accident and one point for every near-miss accident. Automobile accidents and near-misses were found in 54.5% and 50.0% in patients with OSAS. Automobile accident score was significantly correlated with the ESS score ( r = 0.56, P < 0.01). Our findings suggest that ESS score may be useful in detecting patients with the potential risk of automobile accidents associated with daytime sleepiness.     

Sex differences within symptom subtypes of mild obstructive sleep apnea

ObjectivesPrior studies have identified symptom subtypes of moderate to severe (AHI >15) obstructive sleep apnea (OSA). They have not yet been consistently examined in those with mild OSA (AHI 5–15 events/hour). This is important as women are more likely than men to present with mild OSA and may present with different OSA symptoms. The objectives of this study were to determine 1) symptom subtypes in mild OSA and 2) if there are sex differences in the distribution of subtypes.MethodsThe sample included men (n = 921) and women (n = 797) with mild OSA, aged 39–90 years, evaluated with a single night of in–home polysomnography as part of the Sleep Heart Health Study. Latent class analysis determined symptom subtypes. Testing for sex differences relative to OSA severity and symptom subtype used chi-squared test for independence. Bonferroni corrected z-tests compared column proportions.ResultsSymptom subtypes of mild OSA were not significantly different than those identified in prior studies of moderate-severe OSA (p > 0.05): minimally symptomatic (36.4%), disturbed sleep (11.6%), moderately sleepy (37%), and excessively sleepy (15%), p > 0.05. Sex differences within the symptom subtypes were significant [χ²(df = 3) = 30.04, p < 0.001, Cramer's V = 0.132]. Relative to men, women were more likely to be in the disturbed sleep subtype (p < 0.05), and the excessively sleepy subtype (p < 0.05) while less likely to be in the moderately sleep (<0.05) subtype. Women and men were equally represented in the minimal symptoms subtype (p > 0.05).ConclusionsResults suggest symptom reporting among individuals with mild OSA differs as a function of sex. These data have important clinical implications for screening men and women for OSA.     

阻塞型睡眠呼吸暂停综合征患者情绪障碍的研究进展

在临床中睡眠呼吸暂停综合征患者患抑郁、焦虑的概率较高,而且同时患有抑郁、焦虑及OSAS的患者比仅患有OSAS患者病情更重。尽管许多研究评估了OSAS与情绪障碍间的关系,OSAS及情绪障碍之间一些可能的因果机制也已被提出,但是OSAS在情绪障碍的因果关系仍不清楚。对于OSAS伴焦虑抑郁状态的患者,情绪障碍的干预治疗有助于改善OSAS患者的嗜睡、疲劳症状及认知功能,提高患者生活质量。     

Minimizing the mandibular advancement in an oral appliance for the treatment of obstructive sleep apnea

ObjectiveIn the treatment of obstructive sleep apnea (OSA) with an oral appliance (OA), there is no gold standard method to fine-tune the mandibular advancement. This study aimed to analyze the effect of gradual increment of mandibular advancement on the evolution of the apnea–hypopnea index (AHI).MethodsOSA patients were recruited from a sleep unit. All treatments started with an oral appliance without mandibular advancement. After two weeks, the AHI was assessed with respiratory polygraphy. Mandibular advancement was initiated with a step size of 1 mm and evolution in the AHI was assessed. The target protrusion was the one that achieved the highest reduction in AHI and the least side effects. Anthropometric data, sleep questionnaire and Epworth sleepiness scale score were obtained.ResultsThirty six patients (22 men) participated in this study. The patient's mean age was 57 ± 12 years and the body mass index was 25.4 ± 4.1 kg/m². The oral appliance reduced the AHI from 20.8 ± 12.9/h to 8.4 ± 5.1/h (P = 0.000). Ten of the 26 patients with ≥50% reduction in AHI (39%) had zero advancement. The mean mandibular advancement was 1.7 ± 1.5 mm achieving ≥50% reduction in AHI in 72% of the patients. Twenty seven patients had an AHI <10/h. Of the 21 patients with moderate-severe OSA, 17 had the highest decrease in the AHI in a mandibular advancement ≤3 mm.ConclusionsMonitoring the subjective symptoms of the patient and objective evolution in the AHI could minimize the mandibular advancement needed for the treatment of OSA.     

Insufficient sleep rather than the apnea–hypopnea index can be associated with sleepiness-related driving problems of Japanese obstructive sleep apnea syndrome patients residing in metropolitan areas

ObjectiveObstructive sleep apnea syndrome (OSAS) and insufficient sleep might increase the risk of drowsy driving and sleepiness-related vehicular accidents. This study retrospectively investigated the factors associated with these driving problems, particularly addressing OSAS severity and sleep amounts of affected drivers.MethodsThis study examined 161 patients (146 male and 15 female) with OSAS (apnea−hypopnea index [AHI] ≥ 5) who drove on a routine basis and who completed study questionnaires. To investigate factors associated with drowsy driving during the prior year and sleepiness-related vehicular accidents or near-miss events during the prior five years, logistic regression analyses were performed with age, body mass index, monthly driving distance, habitual sleep duration on weekdays, the Japanese version of Epworth Sleepiness Scale score, AHI, and periodic limb movement index as independent variables.ResultsOf the patients, 68 (42.2%) reported drowsy driving experiences, and 86 (53.4%) reported sleepiness-related vehicular accidents or near-miss events. Analyses revealed the following: older age (46–65 years, ≥66 years) was negatively associated with drowsy driving (p <0.05, p <0.05), and habitually shorter sleep duration on weekdays (≤6 hours) was positively associated with drowsy driving (p <0.01). Habitual sleep duration of ≤6 hours (p <0.01) and Epworth Sleepiness Scale score of ≥11 (p <0.01) were positively associated with sleepiness-related vehicular accidents and near-miss events. However, AHI was not associated with these driving problems.ConclusionInsufficient sleep, rather than severity of OSAS, was associated with sleepiness-related driving problems in these Japanese OSAS patients.     

Selection of response criteria affects the success rate of oral appliance treatment for obstructive sleep apnea

BackgroundIn oral appliance therapy for obstructive sleep apnea (OSA), treatment success is arbitrarily defined. We investigated if the selection of response criteria affected the success rate of oral appliance treatment.MethodsThe effects of an oral appliance on apnea–hypopnea index (AHI) and nadir percutaneous oxygen saturation (SpO₂) were investigated in 224 OSA patients. Treatment success was defined as a reduction in AHI to <5 events per hour with a >50% reduction in baseline AHI (criterion 1), a follow-up AHI of <10 events per hour with a >50% reduction in baseline AHI (criterion 2), a >50% reduction in baseline AHI alone (criterion 3), or a >50% reduction in baseline AHI with the nadir SpO₂ above 90% (criterion 4).ResultsThe baseline AHI was reduced with an oral appliance in place compared with the follow-up value (23 ± 11–8.5 ± 8.7 events/h; P < .05) in all of the participants. In every OSA subgroup, the success rate under criterion 3 (75% [mild], 71% [moderate], and 70% [severe]) was greater than that under criterion 1 (53%, 40%, and 24%, respectively). However, responders under criterion 3 in the severe OSA subgroup were still hypoxemic with a nadir SpO₂ of 87 ± 8% even after treatment. This situation was improved by the use of criterion 4, in which a satisfactory improvement in AHI (from 38 ± 11 to 1 ± 1 events/h; P < .01) was associated with a sufficient increase in the nadir SpO₂ (93 ± 2%).ConclusionsWe conclude that the selection of response criteria influences the success rate of oral appliance treatment. To avoid adverse health outcomes, an adjunct definition of treatment success using SpO₂ may be effective for patients who have more severe OSA.     

Factors influencing subjective sleepiness in patients with obstructive sleep apnea syndrome

The aim of the present paper was to clarify the factors influencing subjective daytime sleepiness in patients with obstructive sleep apnea syndrome (OSAS). Subjects included 230 adult male OSAS patients aged 20-73 years. Single and multiple linear regression analyses were performed to estimate the association between the Epworth Sleepiness Scale (ESS) and the following variables: Minnesota Multiphasic Personality Inventory (MMPI), Self-Rating Depression Scale (SDS), age, body mass index (BMI), sleep duration during the preceding month and apnea-hypopnea index (AHI). Single linear regression analysis showed that age had a negative association with ESS score, while BMI, AHI, SDS, hypochondriasis (Hs), hysteria, psychopathic deviant, psychasthenia, schizophrenia and hypomania on the MMPI had a positive association with ESS score. However, the other remaining parameters such as nocturnal sleep duration during the preceding month, depression, masculinity-femininity, paranoia, social introversion on the MMPI had no statistical association with ESS score. Multiple linear regression analysis with stepwise elimination method was applied to choose the significant factors associated with ESS. It was found that three variables including age, AHI and Hs scores were independent factors influencing ESS score. The R(2) for the model was 0.14, suggesting that these factors account for 14% of possible variance of subjective daytime sleepiness of OSAS patients. These results suggest that subjective daytime sleepiness in patients with OSAS may be influenced not only by the severity of respiratory disorder indices but also by certain personality characteristics affecting Hs score and by age.     

原发性癫痫合并阻塞性睡眠呼吸暂停低通气综合征的临床特点

目的探讨原发性癫痫合并阻塞性睡眠呼吸暂停低通气综合征(OSAHS)患者的临床特点。方法回顾性分析2007-06-2014-06在我院确诊的16例原发性癫痫合并OSAHS患者的临床资料(包括病史、多导睡眠脑电图及治疗随访)。结果癫痫形式表现为全面强直阵挛发作13例,部分性发作3例,其中夜间发作11例,白天发作5例;多导睡眠脑电图(polysomnography,PSG)显示均为阻塞性睡眠呼吸暂停低通气综合征(OSAHS),其中重度9例,中度4例,轻度3例。所有患者经抗癫痫药物治疗及OSAHS的指导性治疗。其中4例癫痫伴重度OSAHS经单纯药物治疗仍反复发作,联合丙戊酸钠和经鼻持续气道正压通气(CPAP)治疗,随访0.5~3a,发作频率减少3例,发作停止1例。结论原发性癫痫合并OSAHS一般以中老年男性多见,癫痫类型以夜间全面强直阵挛性发作为主,对于单纯抗癫痫药物治疗不佳者,药物联合CPAP治疗可取得明显效果。     

Efficacy and safety of solriamfetol for excessive daytime sleepiness in narcolepsy and obstructive sleep apnea: a systematic review and meta-analysis of clinical trials

IntroductionExcessive daytime sleepiness (EDS) is the inability to maintain wakefulness and alertness during the major waking episodes of the day, with sleep occurring unintentionally or at inappropriate times. Solriamfetol is a selective norepinephrine-dopamine reuptake inhibitor approved for EDS. This review was done to assess the efficacy and safety of solriamfetol in patients with EDS in narcolepsy or OSA.MethodsA systematic search of the electronic database was conducted for relevant studies. Any randomized controlled trial with outcome measures on the efficacy or safety of solriamfetol in EDS were eligible for inclusion. The primary outcomes were mean difference in the maintenance of wakefulness test (MWT), Epworth sleepiness scale (ESS) score, and risk ratio of adverse events. The random-effects model was used to calculate pooled effect estimates.ResultsWe identified 336 records from the database search. We analyzed eight articles reported from six clinical trials. We pooled outcome measures from five trials. The overall mean difference for MWT was 9.93 min (95% CI: 8.25–11.61), and the mean difference of ESS score was −4.44 (95% CI: −5.50 to −3.38), both in favor of solriamfetol over placebo. The overall risk ratio of adverse events with solriamfetol was 1.47 (95% CI: 1.28–1.69). The most common adverse events reported were headache, nausea, decreased appetite, anxiety, nasopharyngitis, and insomnia.ConclusionsSolriamfetol is efficacious and has a favorable safety profile in the treatment of EDS in patients with narcolepsy and OSA. Solriamfetol is well tolerated and may be recommended for the treatment of EDS in these patients.     

Efficacy and safety of solriamfetol for excessive sleepiness in narcolepsy and obstructive sleep apnea: findings from randomized controlled trials

BackgroundSolriamfetol is developed for the treatment of excessive sleepiness in adult patients with narcolepsy and obstructive sleep apnea (OSA). No systematic review of existing literature has been investigated before. Therefore, the meta-analysis is conducted to assess the efficacy and safety of solriamfetol for excessive sleepiness in narcolepsy and OSA.MethodsPubMed, Embase and Cochrane Library databases were searched from earliest date to July 2020 for randomized controlled trials (RCTs) and the primary outcomes were change from baseline in mean sleep latency and Epworth Sleepiness Scale (ESS).ResultsWe pooled 1177 patients from five RCTs and found solriamfetol led to a significant increment in mean sleep latency (MD = 9.52, 95% CI: 7.60 to 11.44, P < 0.00001) and a reduction in ESS score (MD = −3.74, 95% CI: −4.38 to −3.09, P < 0.00001) compared with placebo. The proportion of patients with at least one adverse event was significantly increased in solriamfetol group (RR = 1.42, 95% CI: 1.24 to 1.64, P < 0.00001), while no statistical differences existed in the risk of at least one serious adverse event between solriamfetol and controlled group (RR = 0.95, 95% CI: 0.24 to 3.77, P = 0.39).ConclusionsA dose of 150 mg solriamfetol is proved to be the appropriate and stable dose for excessive sleepiness. In addition, solriamfetol showed good efficacy for excessive sleepiness in narcolepsy and OSA but also significantly increases the risk of adverse events.     

Severity of individual obstruction events increases with age in patients with obstructive sleep apnea

BackgroundAge is a risk factor of obstructive sleep apnea (OSA). It has been shown that OSA progresses over time, although conflicting results have been reported. However, the effect of age on the severity of OSA and individual obstruction events has not been investigated within different OSA severity categories by taking the most prominent confounding factors (i.e., body mass index, gender, smoking, daytime sleepiness, snoring, hypertension, heart failure, and proportion of supine sleep) into account.MethodsPolygraphic data of 1090 patients with apnea–hypopnea index (AHI) ≥5 were retrospectively reanalyzed. The effect of age on the severity of OSA and obstruction events was investigated in general, within different OSA severity categories, and in different age groups (age <40, 40≤ age <50, 50≤ age <60, and age ≥60 years).ResultsIn the whole population, AHI and durations of apneas, hypopneas, and desaturations increased with increasing age (B ≥ 0.108, p ≤ 0.010). In more detailed analysis, AHI increased with age only in the moderate OSA category (B = 0.075, p = 0.022), although durations of apneas increased in mild and severe OSA categories (B ≥ 0.076, p ≤ 0.038). Furthermore, durations of hypopneas increased with age in mild and moderate OSA categories (B ≥ 0.105, p ≤ 0.038), and durations of desaturations (B ≥ 0.120, p ≤ 0.013) in all OSA severity categories. AHI was not statistically significantly different between the age groups, although durations of obstruction events tended to increase towards older age groups.ConclusionAs obstruction event severity was more strongly dependent on the age than it was dependent on AHI, considering the severity of obstruction events could be beneficial while estimating the long-term effects of the treatments and prognosticating the disease progression.     

阻塞性睡眠呼吸暂停低通气综合征及脑卒中与认知功能障碍的关系

阻塞性睡眠呼吸暂停低通气综合征（OSAHS）是脑卒中的危险因素,脑卒中患者合并阻塞性睡眠呼吸暂停在流行病学上也远远高于普通人群的发病率.OSAHS及脑卒中都可以发生认知功能障碍,两者并存有可能加剧患者认知功能障碍程度及影响恢复,研究和了解OSAHS对卒中后认知功能的影响,对卒中相关认知障碍的防治有着重要的意义.