Kliniske fenotyper ved obstruktiv søvnapné

I denne prospektive studien ble det undersøkt hvilke kliniske fenotyper som er karakteristisk hos pasienter med søvnapné og hvilke komorbiditeter som er vanligst. Studien inkluderte over 6500 pasienter fra 17 europeiske land og Israel. Deltagende institusjon fra Norge var Førde sentralsjukehus.

 

Studien er publisert i PLos One

Clinical Phenotypes and Comorbidity in European Sleep Apnoea Patients

Tarja Saaresranta, Jan Hedner, Maria R. Bonsignore, Renata L. Riha, Walter T. McNicholas, Thomas Penzel, Ulla Anttalainen, John Arthur Kvamme, Martin Pretl, Pawel Sliwinski, Johan Verbraecken, Ludger Grote, ESADA Study Group

Background

Clinical presentation phenotypes of obstructive sleep apnoea (OSA) and their association with comorbidity as well as impact on adherence to continuous positive airway pressure (CPAP) treatment have not been established.

Methods

A prospective follow-up cohort of adult patients with OSA (apnoea-hypopnoea index (AHI) of ≥5/h) from 17 European countries and Israel (n = 6,555) was divided into four clinical presentation phenotypes based on daytime symptoms labelled as excessive daytime sleepiness ("EDS") and nocturnal sleep problems other than OSA (labelled as "insomnia"): 1) EDS (daytime+/nighttime-), 2) EDS/insomnia (daytime+/nighttime+), 3) non-EDS/non-insomnia (daytime-/nighttime-), 4) and insomnia (daytime-/nighttime+) phenotype.

Results

The EDS phenotype comprised 20.7%, the non-EDS/non-insomnia type 25.8%, the EDS/insomnia type 23.7%, and the insomnia phenotype 29.8% of the entire cohort. Thus, clinical presentation phenotypes with insomnia symptoms were dominant with 53.5%, but only 5.6% had physician diagnosed insomnia. Cardiovascular comorbidity was less prevalent in the EDS and most common in the insomnia phenotype (48.9% vs. 56.8%, p<0.001) despite more severe OSA in the EDS group (AHI 35.0±25.5/h vs. 27.9±22.5/h, p<0.001, respectively). Psychiatric comorbidity was associated with insomnia like OSA phenotypes independent of age, gender and body mass index (HR 1.5 (1.188-1.905), p<0.001). The EDS phenotype tended to associate with higher CPAP usage (22.7 min/d, p = 0.069) when controlled for age, gender, BMI and sleep apnoea severity.

Conclusion

Phenotypes with insomnia symptoms comprised more than half of OSA patients and were more frequently linked with comorbidity than those with EDS, despite less severe OSA. CPAP usage was slightly higher in phenotypes with EDS.