Cohort Study Examining the Association of Optimal Blood Pressure Control at Entry With Infrarenal Abdominal Aortic Aneurysm Growth.
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2022
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Frontiers in Cardiovascular Medicine
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Frontiers Media SA
Melbourne Authors
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Melbourne Medical School
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Journal Article
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Thomas Manapurathe, D., Moxon, J. V., Krishna, S. M., Quigley, F., Bourke, M., Bourke, B., Jones, R. E. & Golledge, J. (2022). Cohort Study Examining the Association of Optimal Blood Pressure Control at Entry With Infrarenal Abdominal Aortic Aneurysm Growth.. Front Cardiovasc Med, 9, pp.868889-. https://doi.org/10.3389/fcvm.2022.868889.
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Abstract
BACKGROUND AND AIM: The benefit of controlling cardiovascular risk factors in slowing the progression of small abdominal aortic aneurysm (AAA) is controversial. This study investigated the association of optimal blood pressure control at entry with the growth of small AAA. METHODS AND RESULTS: A total of 1,293 patients with initial AAA diameter <50 mm were followed by a median 5 (inter-quartile range, IQR, 3-7) ultrasound scans for a median of 3.6 years (IQR 1.8, 5.3). Optimal blood pressure control was defined as blood pressure ≤140/90 mmHg at recruitment. The association of optimal blood pressure control at entry with AAA growth was assessed using linear mixed effects models adjusted for established risk factors of AAA growth and factors which were unequally distributed among the blood pressure groups. Optimal blood pressure control at entry was not significantly associated with AAA growth. In the risk factor adjusted model the mean difference in AAA growth between blood pressure groups was 0.04 mm/year (95% CI -0.20, 0.13; p = 0.65). The results were similar in sensitivity analyses excluding outliers or focused on systolic or diastolic blood pressure alone. CONCLUSIONS: This observational study suggests that optimal blood pressure control at entry is not associated with slower AAA growth.