Realization of a CORDIC-Based Plug-In Accelerometer Module for PSG System in Head Position Monitoring for OSAS Patients.

Overnight polysomnography (PSG) is currently the standard diagnostic procedure for obstructive sleep apnea (OSA). It has been known that monitoring of head position in sleep is crucial not only for the diagnosis (positional sleep apnea) but also for the management of OSA (positional therapy). However, there are no sensor systems available clinically to hook up with PSG for accurate head position monitoring.

Impact of rapid ascent to high altitude on sleep.

Purpose: Sleep disturbance at high altitude is common in climbers. In this study, we intended to evaluate the effect of rapid ascent on sleep architecture using polysomnography (PSG) and to compare the differences between subjects with and without acute mountain sickness (AMS).

Methods: The study included 40 non-acclimatized healthy subjects completing PSG at four time points, 3 days before the ascent (T0), two successive nights at 3150 m (T1 and T2), and 2 days after the descent (T3).

Sleep apnea and risk of peptic ulcer bleeding: a nationwide population-based study.

Objective: Patients with sleep apnea sustain cessation of breath during sleep, leading to intermittent hypoxia, systemic inflammation, and sympathetic activation. These insults may contribute to initiation or progression of peptic ulcers. This retrospective matched-control cohort study explored the relationship of sleep apnea and subsequent development of peptic ulcer bleeding.

Sleep disruption in spinocerebellar ataxia type 3: a genetic and polysomnographic study.

Background: Sleep structure disruption and rapid eye movement (REM) sleep behavior disorders (RBD) have been previously reported in patients with neurodegenerative diseases. However, similar studies have rarely been quantitatively conducted in type 3 spinocerebellar ataxia (SCA3).

Methods: Fifteen patients with SCA3 and 16 healthy controls were recruited and evaluated by clinical history, International Cooperative Ataxia Rating Scale (ICARS), Epworth sleepiness scale (ESS), and polysomnography.

Sleep apnea and risk of retinal vein occlusion: a nationwide population-based study of Taiwanese.

Purpose: To explore the relationship of sleep apnea and the subsequent development of retinal vein occlusion (RVO).

Design: A retrospective nonrandomized, matched-control cohort study using the Taiwan National Health Insurance Research Database.

Methods: From 1997 through 2007, we identified newly diagnosed sleep apnea cases in the database.