[An ambulatory respirometer (Hotmate) as a tool for screening of sleep apnea syndrome].
The gold standard diagnostic method for sleep apnea syndrome(SAS) is overnight polysomnography(PSG), but is costly in terms of time and money. We studied the usefulness of a 24-hour ambulatory respirometer equipped with oximeter(Hotmate) for screening of SAS. Seventy-six cases of suspected SAS were enrolled(68 males and 8 females, mean age 51). The correlation between data from Hotmate and PSG was evaluated in 24 cases who underwent both of the tests for the final diagnosis of SAS. There was a good correlation between the two parameters of the data obtained by Hotmate(H) (H-apnea index(AI) vs H-desaturation index(DI)). Among 24 cases who underwent both Hotmate and PSG, there was a good correlation between the data from PSG and Hotmate(PSG-AI vs H-AI: r = 0.80, p < 0.001). Both sensitivity and specificity were highest when screening criteria of H-DI > 15 was utilized(sensitivity = 91.7%, specificity = 66.7%). Our findings suggest that the respiromonitor with oximeter is useful for the screening the patients with SAS.
Tanaka
Masami
M
Department of Clinical Laboratory Medicine, Tokyo University Hospital, Faculty of Medicine, Bunkyo-ku, Tokyo 113-8655.
Katagai
Kayo
K
Tsutsumi
Yukiko
Y
Namekawa
Taeko
T
Fukuhara
Toshiaki
T
Takizawa
Hajime
H
Nakahara
Kazuhiko
K
Ohga
Eijiro
E
D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation*; D010092:Oximetry / Q000295:instrumentation*; D012891:Sleep Apnea Syndromes / Q000175:diagnosis*; D013147:Spirometry / Q000295:instrumentation*