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Zonisamide for the Treatment of Obstructive Sleep Apnea in Overweight/Obese Patients

Obesity Clinical Trial

Official title:
A 1 Month Randomized Placebo Controlled, Double Blind Trial With a 5 Month Open Extension Phase to Explore the Efficacy of Zonisamide on Apnea/Hypopnea Index in Overweight/Obese Sleep Apnea Patients.

Clinical Trial Summary

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.

Clinical Trial Description

n/a

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01765608
Study type Interventional
Source Göteborg University
Contact
Status Completed
Phase Phase 2
Start date March 2010
Completion date June 2013
View Details
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