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Diabetes and Abdominal Aortic Aneurysm Growth
Hisato Takagi1, Takuya Umemoto2,
1Department of Cardiovascular Surgery, Shizuoka Medical Center, Shimizu, Japan kfgth973@ybb.ne.jp.
Angiology
|August 28, 2015
Summary
Diabetes mellitus (DM) is associated with slower abdominal aortic aneurysm (AAA) growth. This meta-analysis of 9777 patients confirms DM
Area of Science:
- Cardiovascular Medicine
- Endocrinology
- Medical Research Methodology
Background:
- Abdominal aortic aneurysm (AAA) is a life-threatening condition characterized by the dilation of the aorta.
- Understanding factors influencing AAA growth is crucial for risk stratification and management.
- Diabetes mellitus (DM) is a common comorbidity with complex effects on vascular health.
Purpose of the Study:
- To systematically evaluate the association between diabetes mellitus (DM) and the growth rate of abdominal aortic aneurysms (AAAs).
- To conduct a meta-analysis of existing studies to quantify the impact of DM on AAA expansion.
Main Methods:
- A systematic literature search was conducted across major databases (MEDLINE, EMBASE) up to June 2015.
- Data from 19 identified studies, encompassing 9777 patients with AAA, were included.
- Standardized mean differences (SMDs) and 95% confidence intervals (CIs) were calculated to compare AAA growth rates between DM and non-DM groups.
Main Results:
- Pooled analyses revealed significantly slower AAA growth rates in patients with DM compared to those without DM (unadjusted SMD: -0.32; adjusted SMD: -0.29).
- Statistical significance was maintained even after accounting for potential publication bias (P < .00001).
- The findings consistently indicate a protective effect of DM against accelerated AAA expansion.
Conclusions:
- Diabetes mellitus is significantly associated with reduced abdominal aortic aneurysm growth rates.
- This meta-analysis provides robust evidence supporting a slower AAA expansion in diabetic patients.
- Further research may explore the underlying mechanisms contributing to this observed association.
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