Sleep-disordered breathing is common after stroke and most often presents as obstructive sleep apnea (OSA), with an estimated prevalence between 43% and 70% compared with 4% and 24% in the general population. OSA is the result of partial or complete closure of the upper airway while attempting to breathe during sleep. It is characterized by snoring, hypopnea, and apnea with intermittent awakeni...

background and objective: stop-bang questionnaire is a well-known obstructive sleep apnea (osa) screening tool. this study aimed to evaluate that patients with high probability of osa in stop-bang questionnaire meet the criteria for assessment by split-night polysomnography (psg). materials and methods: patients who were admitted to three sleep clinics and underwent full-night psg entered into ...

During obstructive sleep apnea (OSA), systemic (Psa) and pulmonary (Ppa) arterial pressures acutely increase after apnea termination, whereas left and right ventricular stroke volumes (SV) reach a nadir. In a canine model (n = 6), we examined the effects of arousal, parasympathetic blockade (atropine 1 mg/kg iv), and sleep state on cardiovascular responses to OSA. In the absence of arousal, SV ...

Judgment and early danger warning of obstructive sleep apnea (OSA) is meaningful to the diagnosis of sleep illness. This paper proposed a novel method based on wavelet information entropy spectrum to make an apnea judgment of the OSA respiratory signal detected by bio-radar in wavelet domain. It makes full use of the features of strong irregularity and disorder of respiratory signal resulting f...

PURPOSE OF REVIEW The purpose of this article is to review the screening tools available in the preoperative clinic for patients at risk of obstructive sleep apnea. RECENT FINDINGS Obstructive sleep apnea (OSA) is the most prevalent sleep disorder. An estimated 82% of men and 92% of women with moderate-to-severe sleep apnea have not been diagnosed. Patients with undiagnosed OSA may have incre...

OBSTRUCTIVE SLEEP APNEA (OSA) IS A HIGHLY PREVALENT SYNDROME THAT IS ASSOCIATED WITH SUBSTANTIAL MORBIDITY AND INCREASED MORTALITY.1-10 Positive airway pressure (PAP) is the most uniformly effective therapy, and to date this is the only intervention for OSA shown to have a favorable impact on both cardiovascular and neurobehavioral morbidities.1,2,6 However, approximately 25-50% of patients wit...

909 Amelioration of OSA Severity in RBD—Huang et al airway dilator muscle EMG activity at sleep onset15 may cause an individual, who has a more collapsible airway, to develop an obstructive respiratory event. The further reduction of genioglossus activity would explain the increased severity of OSA during normal REM sleep.14 Furthermore, peak and tonic EMG activity in genioglossus has been show...

BACKGROUND Anesthetics, analgesics, and surgery may profoundly affect sleep architecture and aggravate sleep-related breathing disturbances. The authors hypothesized that patients with preoperative polysomnographic evidence of obstructive sleep apnea (OSA) would experience greater changes in these parameters than patients without OSA. METHODS After obtaining approvals from the Institutional R...

Obstructive sleep apnea (OSA) is a common disorder characterized by recurrent episodes of nocturnal upper airway obstruction during sleep, which can seriously affect quality and cause sleepiness the daytime. Known risk factors for OSA are numerous, including obesity, age, gender, craniofacial anatomy, smoking, alcohol consumption, genetic inheritance. Recently, air pollution was linked to an in...