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This RCT explores the efficacy of Zonisamide (Zonegran®)on overweight/obese in patients with moderate to severe obstructive sleep apnea. Patients will be randomized to receive zonisamide, placebo or nasal continuous positive airway pressure (nCPAP) during 4 weeks. A 5 month open extension part will follow when patients in the tablet groups will all receive zonisamide. Patients in the open CPAP group will continue with CPAP treatment.
Study hypothesis:
Controlled pharmacological weight reduction with Zonisamide will result in elimination of OSA and OSA sequels more effectively than nCPAP due to incomplete compliance with the mechanical treatment and a lack of direct beneficial metabolic effects after nCPAP. Further it is hypothesized that zonisamide has a direct pharmacological effect on respiratory control during sleep by its carbonic anhydrase inhibitory effects and this will result in a reduction of sleep disordered breathing.
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50 participants in 3 patient groups
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Data sourced from clinicaltrials.gov
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