Article

AIM: To determine the prevalence of, and the risk factors for, sleep apnoea in
cardiac rehabilitation (CR) facilities in Germany.
METHODS: 1152 patients
presenting for CR were screened for sleep-disordered breathing with 2-channel
polygraphy (ApneaLink; ResMed). Parameters recorded included the apnoea-hypopnoea
index (AHI), number of desaturations per hour of recording (ODI), mean and
minimum nocturnal oxygen saturation and number of snoring episodes. Patients
rated subjective sleep quality on a scale from 1 (poor) to 10 (best) and
completed the Epworth Sleepiness Scale (ESS). RESULTS: Clinically significant
sleep apnoea (AHI >/=15/h) was documented in 33% of patients. Mean AHI was 14 +/-
16/h (range 0-106/h). Sleep apnoea was defined as being of moderate severity in
18% of patients (AHI >/=15-29/h) and severe in 15% (AHI >/=30/h). There were
small, but statistically significant, differences in ESS score and subjective
sleep quality between patients with and without sleep apnoea. Logistic regression
model analysis identified the following as risk factors for sleep apnoea in CR
patients: age (per 10 years) (odds ratio (OR) 1.51; p<0.001), body mass index
(per 5 units) (OR 1.31; p=0.001), male gender (OR 2.19; p<0.001), type 2 diabetes
mellitus (OR 1.45; p=0.040), haemoglobin level (OR 0.91; p=0.012) and witnessed
apnoeas (OR 1.99; p<0.001). CONCLUSIONS: The findings of this study indicate that
more than one-third of patients undergoing cardiac rehabilitation in Germany have
sleep apnoea, with one-third having moderate-to-severe SDB that requires further
evaluation or intervention. Inclusion of sleep apnoea screening as part of
cardiac rehabilitation appears to be appropriate.
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Langue : ANGLAIS