Supplemental Value of the Wrist-Worn Actigraphy in Diagnosing the Obstructive Sleep Apnea Syndrome.
- Author:
Mee Hyang IM
1
;
Hong Beom SHIN
;
Yu Jin LEE
;
Seung Hi LEE
;
Chang Yeon WON
;
Myung Hee LEE
;
Soo Young LEE
;
Do Un JEONG
Author Information
1. Department of Psychiatry and Behavioral Science, Seoul National University College of Medicine, Seoul, Korea. jeongdu@snu.ac.kr
- Publication Type:Original Article
- Keywords:
Actigraphy;
Polysomnogrpahy;
Obstructive sleep apnea syndrome;
Fragmentation index;
Respiratory disturbance index
- MeSH:
Accident Proneness;
Actigraphy*;
Female;
Follow-Up Studies;
Humans;
Inpatients;
Outpatients;
Polysomnography;
Prevalence;
Seoul;
Sleep Apnea Syndromes;
Sleep Apnea, Obstructive*;
Sleep Deprivation;
Sleep Wake Disorders;
Wrist
- From:Sleep Medicine and Psychophysiology
2005;12(1):32-38
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVES: Obstructive sleep apnea syndrome (OSAS) has drawn increasing attention as medical community has become to be aware of its co-morbidities and complications, especially cardiovascular complications and excessive daytime sleepiness with accident proneness. As of now, polysomnography is the standard tool to diagnose sleep apnea and estimate the treatment validity. However, its being rather expensive and inconvenient, alternate diagnostic tools have been proposed including wrist actigraphy. So far, actigraphies have been adopted usefully to field-survey sleep apnea prevalence. In this study, we attempted in a sleep laboratory setting to assess the supplemental value of actigraphy in diagnosing OSAS. METHODS: This study was done at the Division of Sleep Studies, the Seoul National University Hospital. Thirty-seven clinically suspected cases of OSAS underwent the one-night polysomnography, simultaneously wearing an actigraphy on non-dominant wrist. We analyzed the data of 27 polysomnographically-proven OSAS patients (male: female 20: 7; age 47.6+/-12.9 years old; age range 23 to 72 years) with no other sleep disorders. We calculated RDI (respiratory disturbance index) from the polysomnography data and FI (fragmentation index) from the actigraphy data. Pearson correlation was calculated in order to compare FI with RDI and to evaluate the supplemental diagnostic value of the actigraphy. RESULTS: Mean total sleep time on polysomnography was 401.4+/-57.8 min (range of 274.0 to 514.1 min). Mean RDI was 21.7+/-20.4 /hour. Mean FI was 21.9+/-13.0 / hour. RDI and FI showed significant correlation (r=0.55, p< 0.01). CONCLUSIONS: Wrist actigraphy in OSAS patients generates a comparable outcome to polysomnography, in measuring the nocturnal sleep fragmentation. The actigraphy could be used supplementally in inpatients, outpatients, and field survey subjects, if polysomnography is unavailable or impossible. In follow-ups related with nasal CPAP (continuous positive airway pressure), upper airway surgery, and oral appliance in OSAS patients, the actigraphy might play a more dominant role in the future.
