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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| OSA patients | Patients with proven OSA (apnea-hypopnea index ≥20/h, ESS >10, age ≥18 years) and initiation of CPAP treatment |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| No intervention | Other | No intervention |
|
| Measure | Description | Time Frame |
|---|---|---|
| Exhaled breath pattern | Change in exhaled breath pattern in response to one month of CPAP treatment | twice during 1 month |
| Measure | Description | Time Frame |
|---|---|---|
| OSA severity parameter | Correlation of breath print with changes in OSA severity parameters on CPAP (e.g. AHI, ODI) | twice during 1 month |
| Vital signs | Correlation of breath print with changes in blood pressure and heart rate |
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Inclusion Criteria:
Exclusion Criteria:
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Patients with proven OSA (apnea-hypopnea index ≥20/h, ESS >10, age ≥18 years) and initiation of CPAP treatment
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital Zurich | Zurich | 8091 | Switzerland |
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| ID | Term |
|---|---|
| D020181 | Sleep Apnea, Obstructive |
| ID | Term |
|---|---|
| D012891 | Sleep Apnea Syndromes |
| D001049 | Apnea |
| D012120 | Respiration Disorders |
| D012140 | Respiratory Tract Diseases |
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| twice during 1 month |
| Sleepiness | Correlation of breath print with changes in sleepiness (Epworth sleepiness scale) and Functional outcome of sleep questionnaire (FOSQ 30) | twice during 1 month |
| Spirometry | Correlation of breath print with spirometry (FEV1, FVC) | twice during 1 month |
| CPAP therapy | Correlation of breath print with CPAP therapy parameters (adherence and leakage) | twice during 1 month |
| Therapy feedback | Correlation of breath print with patients' and their partners' feedback report on CPAP machine used | twice during 1 month |
| D020919 |
| Sleep Disorders, Intrinsic |
| D020920 | Dyssomnias |
| D012893 | Sleep Wake Disorders |
| D009422 | Nervous System Diseases |