Exploring the effects of obstructive sleep apnea on vascular surgery outcomes
Official title: Obstructive Sleep Apnea as a Remote Ischemic Preconditioning in Patients Scheduled for Aorto-bifemoral Bypass Surgery
Run by St. Anne's University Hospital Brno, Czech Republic · NCT04630535 · Data updated 2026-11-12
This study is testing how obstructive sleep apnea might affect recovery and complications in patients having surgery to repair an abdominal aortic aneurysm.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 100 (estimated) |
| Sponsor | St. Anne's University Hospital Brno, Czech Republic Academic / other |
| Locations | 1 site (Brno, Czech Republic) |
| Status | Recruiting |
| Started | November 1, 2020 |
| Main results expected | December 31, 2028 |
| Study ends | January 31, 2029 |
| Registry record updated | April 27, 2026 |
| Trial ID | NCT04630535 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are patients scheduled for elective aortobifemoral bypass surgery who may or may not have obstructive sleep apnea.
✕Probably not a fit
Patients requiring emergent surgery, those undergoing re-operations, or those with known OSA on CPAP treatment may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study aims to investigate the relationship between obstructive sleep apnea (OSA) and ischemia-reperfusion (I/R) injury in patients undergoing elective aortobifemoral bypass surgery for abdominal aortic aneurysm repair. Patients will be assessed for OSA severity using polygraphy and questionnaires prior to surgery. The study will monitor postoperative complications and specific markers of I/R at various time points following surgery to determine if OSA has a protective effect against I/R injury. The findings could provide insights into optimizing surgical outcomes for patients with OSA.
Why it matters
Potential benefit: If successful, this study could lead to improved postoperative outcomes for patients with obstructive sleep apnea undergoing vascular surgery.
How similar studies have gone: While studies on ischemic preconditioning have shown mixed results, the specific focus on OSA's protective effects in this context is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * patients scheduled for elective aorto-bifemoral bypass (AAA and Leriche syndrome patients) Exclusion Criteria: * emergent surgery * aorto-bifemoral bypass using deep vein graft * re-operations * known OSA with CPAP treatment
Where it's running
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St. Anne's University Hospital Brno
Brno, Czech Republic, Czechia Recruiting
Study contacts
- Principal investigator: Ivan Cundrle, M.D., Ph.D. — St. Anne's University Hospital in Brno
- Study coordinator: Ivan Cundrle, M.D., Ph.D.
- Email: ivan.cundrle@fnusa.cz
- Phone: 00420543182553
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.