General surgery programs have relatively high attrition, with female residents more likely to leave their training programs than male residents. Residents most often relocate or switch to another specialty after the first postgraduate year owing to lifestyle-related issues.
Background
There are no recognized pharmacological treatments for abdominal aortic aneurysms (
AAA
), although statins are suggested to be beneficial. We sought to summarize the literature regarding the effects of statins on human
AAA
growth, rupture, and 30‐day mortality.
Methods and Results
We conducted a systematic review and meta‐analysis of randomized and observational studies using the Cochrane
CENTRAL
database,
MEDLINE
, and
EMBASE
up to June 15, 2018. Review, abstraction, and quality assessment were conducted by 2 independent reviewers, and a third author resolved discrepancies. Pooled mean differences and odds ratios with 95% confidence intervals were calculated using random effects models. Heterogeneity was quantified using the I
2
statistic, and publication bias was assessed using funnel plots. Our search yielded 911 articles. One case‐control and 21 cohort studies involving 80 428 patients were included. The risk of bias was low to moderate. Statin use was associated with a mean
AAA
growth rate reduction of 0.82 mm/y (95% confidence interval 0.33, 1.32,
P
=0.001, I
2
=86%). Statins were also associated with a lower rupture risk (odds ratio 0.63, 95% confidence interval 0.51, 0.78,
P
<0.0001, I
2
=27%), and preoperative statin use was associated with a lower 30‐day mortality following elective
AAA
repair (odds ratio 0.55, 95% confidence interval 0.36, 0.83,
P
=0.005, I
2
=57%).
Conclusions
Statin therapy may be associated with reduction in
AAA
progression, rupture, and lower rates of perioperative mortality following elective
AAA
repair. These data argue for widespread statin use in
AAA
patients.
Clinical Trial Registration
URL
:
http://www.crd.york.ac.uk
. Unique identifier:
CRD
42017056480.
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