[Evaluation of accuracy of Healthdyne Nightwatch to monitor sleep breathing disorder].
OBJECTIVE
To study the advantage of computerized portable polysomnograph (Healthdyne Night Watch, NW) compared to standard paper scoring polysomnograph (PSG).


METHODS
NW was used to monitor the same patient with sleep apnea syndrome at the same night and compared with standard PSG.


RESULTS
Apnea and hypopnea index (AHI) recorded by PSG was 28.6 +/- 6.9 versus 28.7 +/- 7.0 recorded by NW. Mean lowest SaO2 recorded by PSG was 73.5% +/- 2.8% versus 74.5% +/- 3.2% recorded by NW. Using a PSG value of AHI > or = 5 and > or = 10 as the diagnostic criteria, the diagnostic agreement of NW was 93.7% and 95.3%, respectively.


CONCLUSIONS
The computerized portable polysomnograph (NW) saves time and labour. It could be used in patient's home or ward and could replace PSG in most situations.
PUMC Hospital, CAMS and PUMC, Beijing 100730.
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M
Li
X
X
Huang
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation; D017286:Polysomnography / Q000295:instrumentation / Q000379:methods; D012891:Sleep Apnea Syndromes / Q000175:diagnosis* / Q000503:physiopathology; D012895:Sleep, REM