Distribution of patient characteristics Gender Female 16 Male 51 OSAS grade Mild (mean AHI) 39 (9.74) Moderate (mean AHI) 12 / (19.88) Severe (mean AHI) 16 / (34.85) Female (mean[+ or -]SD) Age (yrs) 49.85[+ or -]6.56 BMI (kg/[m.sup.2]) 27.67[+ or -]2.96 AHI 16.1[+ or -]2.18 Min [O.sub.2] 83.82[+ or -]10.62 Gender 23.9 76.1 OSAS grade 58.2 17.9 23.9 Male (mean[+ or -]SD) Age (yrs) 44.16[+ or -]5.23 BMI (kg/[m.sup.2]) 27.22[+ or -]2.50 AHI 18.9[+ or -]3.48 Min [O.sub.2] 84.71[+ or -]12.18 BMI: body mass index; AHI: apnea-hypopnea index
(event/hr); min [O.sub.2]: minimum oxygen saturation; OSAS: obstructive sleep apnea syndrome Table 2.
The following PSG parameters were recorded: the apnea-hypopnea index
(AHI) expressing the number of apnea and hypopnea episodes per 1 h of examination, the apnea index (AI) and hypopnea index (HI), reflecting the number of apnea and hypopnea episodes per 1 h, respectively.
The apnea-hypopnea index
was 109.6 events/h with the longest apnea time 61.3 s and average apnea time 23.5 s.
Fifty patients with apnea-hypopnea index
(AHI) values over 5 based on their PSG results were included in the study group.
RESULTS AND ANALYSIS: Apnea-hypopnea index
(AHI) less than 5 was considered normal.
After 4 months of follow-up, at-home overnight polysomnography showed "a clear, significant treatment effect": the mean apnea-hypopnea index
(AHI) was 6.7 in the active-treatment group, compared with 16.7 in the placebo group.
"Our data demonstrate that even modest elevations of apnea-hypopnea index
scores in pregnancy are associated with cardiometabolic morbidity.
In adults, an apnea-hypopnea index
(AHI) of grea ter than or equal to 5 is the minimum criterion for establishing a SDB diagnosis, while severity is classified by the number of events per hour.
Patients with an apnea-hypopnea index
(AHI) greater than 30 had a 30 percent higher risk of developing diabetes than those with an AHI less than 5.
The apnea-hypopnea index
(AHI) is an index of severity that combines apneas and hypopneas (slow or shallow breathing).
Inclusion criteria were: OSA, apnea-hypopnea index
10 or greater; control, apnea-hypopnea index
less than 5.
Investigators rated 42 of them as having moderate to severe OSA based on an apnea-hypopnea index
in excess of 5 events/hr.
(1) The syndrome is defined as an apnea-hypopnea index
(AHI) of 5 or more events per hour during a sleep polysomnogram, accompanied by either excessive daytime sleepiness or 2 of the following: choking or gasping during sleep, recurrent awakenings from sleep, daytime fatigue, and impaired concentration.
Spearman correlation analysis was applied between the QTD, QTcD and Apnea-Hypopnea Index
The sleep study, as measured by the apnea-hypopnea index
, showed a positive trend (p=0.145) in the overall patient population.