Determination of changes in molecular breath patterns in OSA patients, naïve for OSA treatment before and after one month of CPAP therapy by untargeted, secondary electrospray ionisation-high resolution mass spectrometry (SESI-HRMS). Furthermore, breath patterns will be assessed for correlation and association to clinical outcomes such as change in OSA severity, sleepiness, and blood pressure.
Study Type
OBSERVATIONAL
Enrollment
53
No intervention
University Hospital Zurich
Zurich, Switzerland
Exhaled breath pattern
Change in exhaled breath pattern in response to one month of CPAP treatment
Time frame: twice during 1 month
OSA severity parameter
Correlation of breath print with changes in OSA severity parameters on CPAP (e.g. AHI, ODI)
Time frame: twice during 1 month
Vital signs
Correlation of breath print with changes in blood pressure and heart rate
Time frame: twice during 1 month
Sleepiness
Correlation of breath print with changes in sleepiness (Epworth sleepiness scale) and Functional outcome of sleep questionnaire (FOSQ 30)
Time frame: twice during 1 month
Spirometry
Correlation of breath print with spirometry (FEV1, FVC)
Time frame: twice during 1 month
CPAP therapy
Correlation of breath print with CPAP therapy parameters (adherence and leakage)
Time frame: twice during 1 month
Therapy feedback
Correlation of breath print with patients' and their partners' feedback report on CPAP machine used
Time frame: twice during 1 month
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