Reproducibility of oximetry with a static charge-sensitive bed in evaluation of obstructive sleep apnoea.
The reproducibility of overnight polygraphic recording with oximetry, the use of a static charge-sensitive bed (SCSB), thermistors and a body position sensor was assessed in diagnosing obstructive sleep apnoea syndrome (OSAS). Forty-six patients with a clinical suspicion of OSAS underwent a repeat recording. No treatment for OSAS and no change in patient characteristics was allowed between duplicate nights. Between repeated recordings significant correlations were found for ODI4, time spent at SaO2 < 90% and the mean nadir SaO2. Good agreement was found in concordance of classification of ODI4, time spent at SaO2 < 90% and body movements. The combination of oximetry, thermistors, SCSB and body position sensor has a good reproducibility as an affordable screening method in the evaluation of OSAS.
Lojander
J
J
Department of Medicine, Helsinki University, Central Hospital, Finland.
Salmi
T
T
Maasilta
P
P
D000293:Adolescent; D000328:Adult; D000368:Aged; D001513:Beds; D001785:Blood Gas Monitoring, Transcutaneous / Q000379:methods; D016009:Chi-Square Distribution; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement; D010092:Oximetry / Q000379:methods*; D017286:Polysomnography / Q000379:methods; D015203:Reproducibility of Results; D012129:Respiratory Function Tests / Q000379:methods; D012891:Sleep Apnea Syndromes / Q000175:diagnosis*; D016683:Supine Position