To evaluate the effects of successful uvulopalatopharyngoplasty (UPPP) on cardiopulmonary exercise testing (CPET) in patients with obstructive sleep apnea syndrome (OSAS).
25 subjects with moderately severe or severe OSAS who desired UPPP were enrolled. All patients had an overnight sleep study and CPET before and 3 months after LAUP. Patients were divided into 2 groups based on the success (group I) or failure (group II) of UPPP to improve their sleep apnea.
The results showed that successful UPPP in group I was followed by improvement in right ventricular ejection fraction, maximal work rate (WRmax), VO2max/kg, anaerobic threshold, oxygen pulse and a lower breathing reserve. CPET results were unchanged after UPPP in group II subjects.
Patients with OSAS before UPPP had abnormal CPET as reflected by low VO2peak/kg, WRmax, anaerobic threshold and oxygen pulse. All of these variables improved after UPPP that successfully ameliorated OSAS.
Patients with OSAS before UPPP had abnormal CPET. CPET improved after UPPP that successfully ameliorated OSAS.
Ching Lin, None.