Imperial College London

ProfessorJanetPowell

Faculty of MedicineDepartment of Surgery & Cancer

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 8846 7312j.powell

 
 
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Location

 

4N17Charing Cross HospitalCharing Cross Campus

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Summary

 

Publications

Citation

BibTex format

@article{Powell:2017:10.1136/bmj.j4859,
author = {Powell, JT and IMPROVE, Trail Investigators},
doi = {10.1136/bmj.j4859},
journal = {British Medical Journal},
title = {Comparative clinical effectiveness and cost-effectiveness of an endovascular strategy versus open repair for ruptured abdomina aortic aneurysm: 3-year results of the IMPROVE randomised trial},
url = {http://dx.doi.org/10.1136/bmj.j4859},
volume = {359},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Objective To assess the three year clinical outcomes and cost effectiveness of a strategy of endovascular repair (if aortic morphology is suitable, open repair if not) versus open repair for patients with suspected ruptured abdominal aortic aneurysm.Design Randomised controlled trial.Setting 30 vascular centres (29 in UK, one in Canada), 2009-16.Participants 613 eligible patients (480 men) with a clinical diagnosis of ruptured aneurysm, of whom 502 underwent emergency repair for rupture.Interventions 316 patients were randomised to an endovascular strategy (275 with confirmed rupture) and 297 to open repair (261 with confirmed rupture).Main outcome measures Mortality, with reinterventions after aneurysm repair, quality of life, and hospital costs to three years as secondary measures.Results The maximum follow-up for mortality was 7.1 years, with two patients in each group lost to follow-up by three years. After similar mortality by 90 days, in the mid-term (three months to three years) there were fewer deaths in the endovascular than the open repair group (hazard ratio 0.57, 95% confidence interval 0.36 to 0.90), leading to lower mortality at three years (48% v 56%), but by seven years mortality was about 60% in each group (hazard ratio 0.92, 0.75 to 1.13). Results for the 502 patients with repaired ruptures were more pronounced: three year mortality was lower in the endovascular strategy group (42% v 54%; odds ratio 0.62, 0.43 to 0.88), but after seven years there was no clear difference between the groups (hazard ratio 0.86, 0.68 to 1.08). Reintervention rates up to three years were not significantly different between the randomised groups (hazard ratio 1.02, 0.79 to 1.32); the initial rapid rate of reinterventions was followed by a much slower mid-term reintervention rate in both groups. The early higher average quality of life in the endovascular strategy versus open repair group, coupled with the lower mortality at three years, led to a gain in average quality
AU - Powell,JT
AU - IMPROVE,Trail Investigators
DO - 10.1136/bmj.j4859
PY - 2017///
SN - 0959-8138
TI - Comparative clinical effectiveness and cost-effectiveness of an endovascular strategy versus open repair for ruptured abdomina aortic aneurysm: 3-year results of the IMPROVE randomised trial
T2 - British Medical Journal
UR - http://dx.doi.org/10.1136/bmj.j4859
UR - http://hdl.handle.net/10044/1/54314
VL - 359
ER -