NCT04630535

Brief Summary

Ischemia and reperfusion (I/R) injury during abdominal aortic aneurysm (AAA) repair is inevitable and may lead to postoperative multi-organ failure. Remote ischemic preconditioning (short periods of ischemia in anticipation of longer period of ischemia) may act protectively against ischemia. Studies of ischemic preconditioning in patients with AAA are conflicting. Obstructive sleep apnea (OSA) is a sleep disordered breathing syndrome which may have a protective effect against ischemia. The investigators hypothesize that I/R injury will be less pronounced in patients who have OSA and that the extent of I/R injury will inversely correlate with OSA severity. Accordingly, the aim of this study is to compare postoperative complications and markers of I/R in patients undergoing elective AAA repair who do and do not have OSA.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
100

participants targeted

Target at P50-P75 for all trials

Timeline
33mo left

Started Nov 2020

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress67%
Nov 2020Jan 2029

Study Start

First participant enrolled

November 1, 2020

Completed
3 days until next milestone

First Submitted

Initial submission to the registry

November 4, 2020

Completed
12 days until next milestone

First Posted

Study publicly available on registry

November 16, 2020

Completed
8.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2028

Expected
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

January 31, 2029

Last Updated

April 27, 2026

Status Verified

April 1, 2026

Enrollment Period

8.2 years

First QC Date

November 4, 2020

Last Update Submit

April 22, 2026

Conditions

Keywords

remote preconditioning

Outcome Measures

Primary Outcomes (1)

  • Change of I/R injury markers

    Plasma Total Antioxidant Capacity and Reactive Oxygen Species Concentration

    T0 - before anesthesia induction; T1 - 3 hrs after aorta de-clamping; T2 - 12 hrs after aorta de-clamping; T3 - 24 hrs after aorta de-clamping; T4 - on the fifth post-operative day

Secondary Outcomes (1)

  • post-operative complications

    up to 30 post-operative days

Study Arms (2)

Obstructive Sleep Apnea

Pacient with OSA (AHI≥5) undergoing aorto-bifemoral bypass

Procedure: aorto-bifemoral bypass surgery

Without Obstructive Sleep Apnea

Patinets without OSA undergoing aorto-bifemoral bypass

Procedure: aorto-bifemoral bypass surgery

Interventions

aorto-bifemoral bypass surgery (Leriche syndrom, elective AAA repair)

Obstructive Sleep ApneaWithout Obstructive Sleep Apnea

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

consecutive patients scheduled for elective aorto-bifemoral bypass (AAA and Leriche syndrome patients)

You may qualify if:

  • patients scheduled for elective aorto-bifemoral bypass (AAA and Leriche syndrome patients)

You may not qualify if:

  • emergent surgery
  • aorto-bifemoral bypass using deep vein graft
  • re-operations
  • known OSA with CPAP treatment

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

St. Anne's University Hospital Brno

Brno, Czech Republic, 65691, Czechia

RECRUITING

Related Publications (13)

  • Katseni K, Chalkias A, Kotsis T, Dafnios N, Arapoglou V, Kaparos G, Logothetis E, Iacovidou N, Karvouni E, Katsenis K. The Effect of Perioperative Ischemia and Reperfusion on Multiorgan Dysfunction following Abdominal Aortic Aneurysm Repair. Biomed Res Int. 2015;2015:598980. doi: 10.1155/2015/598980. Epub 2015 Dec 21.

    PMID: 26798637BACKGROUND
  • Murry CE, Jennings RB, Reimer KA. Preconditioning with ischemia: a delay of lethal cell injury in ischemic myocardium. Circulation. 1986 Nov;74(5):1124-36. doi: 10.1161/01.cir.74.5.1124.

    PMID: 3769170BACKGROUND
  • Walsh SR, Boyle JR, Tang TY, Sadat U, Cooper DG, Lapsley M, Norden AG, Varty K, Hayes PD, Gaunt ME. Remote ischemic preconditioning for renal and cardiac protection during endovascular aneurysm repair: a randomized controlled trial. J Endovasc Ther. 2009 Dec;16(6):680-9. doi: 10.1583/09-2817.1.

    PMID: 19995115BACKGROUND
  • Walsh SR, Sadat U, Boyle JR, Tang TY, Lapsley M, Norden AG, Gaunt ME. Remote ischemic preconditioning for renal protection during elective open infrarenal abdominal aortic aneurysm repair: randomized controlled trial. Vasc Endovascular Surg. 2010 Jul;44(5):334-40. doi: 10.1177/1538574410370788. Epub 2010 May 18.

    PMID: 20484066BACKGROUND
  • Li C, Li YS, Xu M, Wen SH, Yao X, Wu Y, Huang CY, Huang WQ, Liu KX. Limb remote ischemic preconditioning for intestinal and pulmonary protection during elective open infrarenal abdominal aortic aneurysm repair: a randomized controlled trial. Anesthesiology. 2013 Apr;118(4):842-52. doi: 10.1097/ALN.0b013e3182850da5.

    PMID: 23353795BACKGROUND
  • Murphy N, Vijayan A, Frohlich S, O'Farrell F, Barry M, Sheehan S, Boylan J, Conlon N. Remote ischemic preconditioning does not affect the incidence of acute kidney injury after elective abdominal aortic aneurysm repair. J Cardiothorac Vasc Anesth. 2014 Oct;28(5):1285-92. doi: 10.1053/j.jvca.2014.04.018.

    PMID: 25281045BACKGROUND
  • Healy DA, Boyle E, McCartan D, Bourke M, Medani M, Ferguson J, Yagoub H, Bashar K, O'Donnell M, Newell J, Canning C, McMonagle M, Dowdall J, Cross S, O'Daly S, Manning B, Fulton G, Kavanagh EG, Burke P, Grace PA, Moloney MC, Walsh SR; Preconditioning Shields Against Vascular Events in Surgery (Preconditioning SAVES) Trial Group. A MultiCenter Pilot Randomized Controlled Trial of Remote Ischemic Preconditioning in Major Vascular Surgery. Vasc Endovascular Surg. 2015 Nov;49(8):220-7. doi: 10.1177/1538574415614404. Epub 2015 Nov 16.

    PMID: 26574485BACKGROUND
  • Garcia S, Rector TS, Zakharova M, Herrmann RR, Adabag S, Bertog S, Sandoval Y, Santilli S, Brilakis ES, McFalls EO. Cardiac Remote Ischemic Preconditioning Prior to Elective Vascular Surgery (CRIPES): A Prospective, Randomized, Sham-Controlled Phase II Clinical Trial. J Am Heart Assoc. 2016 Sep 29;5(10):e003916. doi: 10.1161/JAHA.116.003916.

    PMID: 27688236BACKGROUND
  • Thomas KN, Cotter JD, Williams MJ, van Rij AM. Repeated Episodes of Remote Ischemic Preconditioning for the Prevention of Myocardial Injury in Vascular Surgery. Vasc Endovascular Surg. 2016 Apr;50(3):140-6. doi: 10.1177/1538574416639150. Epub 2016 Apr 12.

    PMID: 27075990BACKGROUND
  • Mouton R, Pollock J, Soar J, Mitchell DC, Rogers CA. Remote ischaemic preconditioning versus sham procedure for abdominal aortic aneurysm repair: an external feasibility randomized controlled trial. Trials. 2015 Aug 25;16:377. doi: 10.1186/s13063-015-0899-3.

    PMID: 26303818BACKGROUND
  • De Freitas S, Hicks CW, Mouton R, Garcia S, Healy D, Connolly C, Thomas KN, Walsh SR. Effects of Ischemic Preconditioning on Abdominal Aortic Aneurysm Repair: A Systematic Review and Meta-analysis. J Surg Res. 2019 Mar;235:340-349. doi: 10.1016/j.jss.2018.09.049. Epub 2018 Nov 13.

    PMID: 30691816BACKGROUND
  • Sanchez-de-la-Torre A, Soler X, Barbe F, Flores M, Maisel A, Malhotra A, Rue M, Bertran S, Aldoma A, Worner F, Valls J, Lee CH, Turino C, Galera E, de Batlle J, Sanchez-de-la-Torre M; Spanish Sleep Network( *). Cardiac Troponin Values in Patients With Acute Coronary Syndrome and Sleep Apnea: A Pilot Study. Chest. 2018 Feb;153(2):329-338. doi: 10.1016/j.chest.2017.06.046. Epub 2017 Jul 20.

    PMID: 28736306BACKGROUND
  • Shah N, Redline S, Yaggi HK, Wu R, Zhao CG, Ostfeld R, Menegus M, Tracy D, Brush E, Appel WD, Kaplan RC. Obstructive sleep apnea and acute myocardial infarction severity: ischemic preconditioning? Sleep Breath. 2013 May;17(2):819-26. doi: 10.1007/s11325-012-0770-7. Epub 2012 Oct 23.

    PMID: 23090861BACKGROUND

Biospecimen

Retention: SAMPLES WITH DNA

frozen blood plasma

MeSH Terms

Conditions

Sleep Apnea, ObstructiveReperfusion Injury

Condition Hierarchy (Ancestors)

Sleep Apnea SyndromesApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System DiseasesVascular DiseasesCardiovascular DiseasesPostoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Ivan Cundrle, M.D., Ph.D.

    St. Anne's University Hospital in Brno

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Ivan Cundrle, M.D., Ph.D.

CONTACT

Marek Lukes, M.D.

CONTACT

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

November 4, 2020

First Posted

November 16, 2020

Study Start

November 1, 2020

Primary Completion (Estimated)

December 31, 2028

Study Completion (Estimated)

January 31, 2029

Last Updated

April 27, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Locations