Background: Physical domains of quality of life measures are negatively impacted following abdominal aortic aneurysm (AAA) repair. This is likely to reflect a reduction in objective measures of functional status, although this is yet to be established. These reductions can be targeted via exercise-based rehabilitation. This review aims to systematically evaluate the current evidence quantifying changes in functional status following open AAA repair and to consider the role of exercise-based rehabilitation for these patients. Methods: The Medline, EMBASE and Cochrane CENTRAL databases were searched using two distinct search strategies. We included all prospective randomised and non-randomised trials that considered the impact of open AAA repair on functional status and/or the effect of exercise-based rehabilitation following open AAA repair. The primary outcomes were changes in objective measures of functional status following AAA repair and changes in these measures following exercise-based rehabilitation. Risk of bias was independently assessed by two review authors using the criteria outlined in the revised Cochrane tool (ROB 2.0) or the risk of bias in non-randomised studies of interventions (ROBINS-I) tool. Results: No studies were identified that quantified changes in functional status following open AAA repair. One study considered exercise-based rehabilitation. This three-arm randomised trial compared two walking-based exercise programmes with routine care physiotherapy.Patients who underwent backward walking-based rehabilitation had a significantly lesser decline in functional status than the other groups, based on the 6-minute walk test and standard metabolic equivalents. There were no significant differences in length of stay or pulmonary function. Discussion: This is the first systematic review to explore the objective decline in functional status and the role of exercise-based rehabilitation following open AAA repair. There is no evidence to quantify functional decline following AAA repair and limited low quality evidence to support exercise-based rehabilitation. The ideal next step for future research would be a feasibility or observational before-and-after cohort study using direct measures of physical function such as the short physical performance battery or the 6-minute walk test.
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