NCT05346289

Brief Summary

The overall aim is to determine the frequency by which women and men with intact abdominal aortic aneurysms (AAA) are treated with elective surgery at three vascular outpatient clinics in Europe, and to investigate whether the reasons to refrain from elective surgery differ between the sexes.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
400

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Jun 2020

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
completed

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 Start

First participant enrolled

June 1, 2020

Completed
1.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 14, 2022

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

April 20, 2022

Completed
6 days until next milestone

First Posted

Study publicly available on registry

April 26, 2022

Completed
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2022

Completed
Last Updated

December 5, 2022

Status Verified

November 1, 2022

Enrollment Period

1.7 years

First QC Date

April 20, 2022

Last Update Submit

November 30, 2022

Conditions

Keywords

Sex differencesElective treatment rateSurgical eligibilitySurgical treatmentConservative treatmentUntreated

Outcome Measures

Primary Outcomes (2)

  • Final Elective Treatment Status

    Relative frequency of women and men that were electively treated or left untreated, the latter group subcategorized into patients who did or did not reach the diameter threshold for surgical treatment (50 mm women, 55 men).

    End of follow-up in December 2021 with maximal possible follow-up of seven years.

  • Sex-Specific Reasons for Remaining Untreated

    Frequency distribution of underlying reasons behind non-treatment among those men and women who reached the treatment threshold. Primary reason registered as patient- (comorbidity, patient's wish) or AAA-related (morphology).

    Evaluated at the time of the conservative treatment decision during maximal follow-up of seven years.

Secondary Outcomes (2)

  • Rupture Rate

    Study end December 2021.

  • Mortality Rate

    Study end December 2021.

Study Arms (2)

Women

Procedure: Elective surgery for intact AAA

Men

Procedure: Elective surgery for intact AAA

Interventions

Elective surgery including the following modalities: open repair, endovascular repair (EVAR), fenestrated end-vascular repair (FEVAR).

MenWomen

Eligibility Criteria

Age40 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

All men and women diagnosed with an intact abdominal aortic aneurysm (ICD10 classification I71.4) and who fulfill the inclusion diameter criterion and none of the exclusion criteria are consecutively included from January 2014 and onwards at three vascular outpatient departments in Europe (Karolinska University Hospital, Stockholm, Sweden; St. Olav Hospital, Trondheim, Norway; Medical University of Graz, Graz, Austria) until reaching prespecified study target size according to power calculation (200 women, 200 men).

You may qualify if:

  • Intact abdominal aortic aneurysm 30 mm or larger in men and women irrespective of underlying pathogenesis (atherosclerotic, mycotic, previous dissection).

You may not qualify if:

  • Previous aortic surgery or surgical treatment for AAA
  • Ruptured AAA at index contact

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Karolinska University Hospital

Stockholm, 17176, Sweden

Location

Related Publications (18)

  • Sakalihasan N, Michel JB, Katsargyris A, Kuivaniemi H, Defraigne JO, Nchimi A, Powell JT, Yoshimura K, Hultgren R. Abdominal aortic aneurysms. Nat Rev Dis Primers. 2018 Oct 18;4(1):34. doi: 10.1038/s41572-018-0030-7.

    PMID: 30337540BACKGROUND
  • Lederle FA, Johnson GR, Wilson SE; Aneurysm Detection and Management Veterans Affairs Cooperative Study. Abdominal aortic aneurysm in women. J Vasc Surg. 2001 Jul;34(1):122-6. doi: 10.1067/mva.2001.115275.

    PMID: 11436084BACKGROUND
  • Scott RA, Bridgewater SG, Ashton HA. Randomized clinical trial of screening for abdominal aortic aneurysm in women. Br J Surg. 2002 Mar;89(3):283-5. doi: 10.1046/j.0007-1323.2001.02014.x.

    PMID: 11872050BACKGROUND
  • Sweeting MJ, Thompson SG, Brown LC, Powell JT; RESCAN collaborators. Meta-analysis of individual patient data to examine factors affecting growth and rupture of small abdominal aortic aneurysms. Br J Surg. 2012 May;99(5):655-65. doi: 10.1002/bjs.8707. Epub 2012 Mar 5.

    PMID: 22389113BACKGROUND
  • Brown LC, Powell JT. Risk factors for aneurysm rupture in patients kept under ultrasound surveillance. UK Small Aneurysm Trial Participants. Ann Surg. 1999 Sep;230(3):289-96; discussion 296-7. doi: 10.1097/00000658-199909000-00002.

    PMID: 10493476BACKGROUND
  • Karthikesalingam A, Nicoli TK, Holt PJ, Hinchliffe RJ, Pasha N, Loftus IM, Thompson MM. The fate of patients referred to a specialist vascular unit with large infra-renal abdominal aortic aneurysms over a two-year period. Eur J Vasc Endovasc Surg. 2011 Sep;42(3):295-301. doi: 10.1016/j.ejvs.2011.04.022. Epub 2011 May 14.

    PMID: 21576025BACKGROUND
  • Whittaker JD, Meecham L, Summerour V, Khalil S, Layton G, Yousif M, Jennings A, Wall M, Newman J. Outcome after Turndown for Elective Abdominal Aortic Aneurysm Surgery. Eur J Vasc Endovasc Surg. 2017 Nov;54(5):579-586. doi: 10.1016/j.ejvs.2017.07.023. Epub 2017 Sep 2.

    PMID: 28874329BACKGROUND
  • Sweeting MJ, Masconi KL, Jones E, Ulug P, Glover MJ, Michaels JA, Bown MJ, Powell JT, Thompson SG. Analysis of clinical benefit, harms, and cost-effectiveness of screening women for abdominal aortic aneurysm. Lancet. 2018 Aug 11;392(10146):487-495. doi: 10.1016/S0140-6736(18)31222-4. Epub 2018 Jul 26.

    PMID: 30057105BACKGROUND
  • Zommorodi S, Bottai M, Hultgren R. Sex differences in repair rates and outcomes of patients with ruptured abdominal aortic aneurysm. Br J Surg. 2019 Oct;106(11):1480-1487. doi: 10.1002/bjs.11258. Epub 2019 Aug 12.

    PMID: 31403186BACKGROUND
  • Aber A, Tong TS, Chilcott J, Thokala P, Maheswaran R, Thomas SM, Nawaz S, Walters S, Michaels J. Sex differences in national rates of repair of emergency abdominal aortic aneurysm. Br J Surg. 2019 Jan;106(1):82-89. doi: 10.1002/bjs.11006. Epub 2018 Nov 5.

    PMID: 30395361BACKGROUND
  • Kuhnl A, Erk A, Trenner M, Salvermoser M, Schmid V, Eckstein HH. Incidence, Treatment and Mortality in Patients with Abdominal Aortic Aneurysms. Dtsch Arztebl Int. 2017 Jun 5;114(22-23):391-398. doi: 10.3238/arztebl.2017.0391.

    PMID: 28655374BACKGROUND
  • McPhee JT, Hill JS, Eslami MH. The impact of gender on presentation, therapy, and mortality of abdominal aortic aneurysm in the United States, 2001-2004. J Vasc Surg. 2007 May;45(5):891-9. doi: 10.1016/j.jvs.2007.01.043. Epub 2007 Mar 28.

    PMID: 17391899BACKGROUND
  • Dueck AD, Johnston KW, Alter D, Laupacis A, Kucey DS. Predictors of repair and effect of gender on treatment of ruptured abdominal aortic aneurysm. J Vasc Surg. 2004 Apr;39(4):784-7. doi: 10.1016/j.jvs.2003.10.064.

    PMID: 15071441BACKGROUND
  • Katz DJ, Stanley JC, Zelenock GB. Gender differences in abdominal aortic aneurysm prevalence, treatment, and outcome. J Vasc Surg. 1997 Mar;25(3):561-8. doi: 10.1016/s0741-5214(97)70268-4.

    PMID: 9081139BACKGROUND
  • Scott SW, Batchelder AJ, Kirkbride D, Naylor AR, Thompson JP. Late Survival in Nonoperated Patients with Infrarenal Abdominal Aortic Aneurysm. Eur J Vasc Endovasc Surg. 2016 Oct;52(4):444-449. doi: 10.1016/j.ejvs.2016.05.008. Epub 2016 Jun 30.

    PMID: 27374814BACKGROUND
  • Wanhainen A, Verzini F, Van Herzeele I, Allaire E, Bown M, Cohnert T, Dick F, van Herwaarden J, Karkos C, Koelemay M, Kolbel T, Loftus I, Mani K, Melissano G, Powell J, Szeberin Z, Esvs Guidelines Committee, de Borst GJ, Chakfe N, Debus S, Hinchliffe R, Kakkos S, Koncar I, Kolh P, Lindholt JS, de Vega M, Vermassen F, Document Reviewers, Bjorck M, Cheng S, Dalman R, Davidovic L, Donas K, Earnshaw J, Eckstein HH, Golledge J, Haulon S, Mastracci T, Naylor R, Ricco JB, Verhagen H. Editor's Choice - European Society for Vascular Surgery (ESVS) 2019 Clinical Practice Guidelines on the Management of Abdominal Aorto-iliac Artery Aneurysms. Eur J Vasc Endovasc Surg. 2019 Jan;57(1):8-93. doi: 10.1016/j.ejvs.2018.09.020. Epub 2018 Dec 5. No abstract available.

    PMID: 30528142BACKGROUND
  • Chaikof EL, Dalman RL, Eskandari MK, Jackson BM, Lee WA, Mansour MA, Mastracci TM, Mell M, Murad MH, Nguyen LL, Oderich GS, Patel MS, Schermerhorn ML, Starnes BW. The Society for Vascular Surgery practice guidelines on the care of patients with an abdominal aortic aneurysm. J Vasc Surg. 2018 Jan;67(1):2-77.e2. doi: 10.1016/j.jvs.2017.10.044.

    PMID: 29268916BACKGROUND
  • Talvitie M, Aldstedt-Nyronning L, Stenman M, Roy J, Cohnert T, Hultgren R. Women with large intact abdominal aortic aneurysms remain untreated. J Vasc Surg. 2023 Sep;78(3):657-667.e5. doi: 10.1016/j.jvs.2023.05.025. Epub 2023 May 20.

MeSH Terms

Conditions

Aortic Aneurysm, AbdominalAneurysmAortic Aneurysm

Interventions

Elective Surgical Procedures

Condition Hierarchy (Ancestors)

Vascular DiseasesCardiovascular DiseasesAortic Diseases

Intervention Hierarchy (Ancestors)

Surgical Procedures, Operative

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Prof., Senior Consultant

Study Record Dates

First Submitted

April 20, 2022

First Posted

April 26, 2022

Study Start

June 1, 2020

Primary Completion

February 14, 2022

Study Completion

November 1, 2022

Last Updated

December 5, 2022

Record last verified: 2022-11

Data Sharing

IPD Sharing
Will not share

Locations