Aspirin use is associated with decreased radiologically-determined thrombus sac volume in abdominal aortic aneurysms

Vascular
Mark D BalceniukMichael C Stoner

Abstract

Introduction Formation and renewal of intramural thrombus is associated with inflammation, and contributes to the complexity of aneurysm repair. Current cardiovascular pharmacotherapy includes several inflammatory modulators such as aspirin, statins, clopidogrel, and angiotensin-converting enzyme inhibitors. The purpose of our study was to investigate the effect of these inflammatory modulators on radiographically-determined thrombus sac volume. Methods Pre-operative computed tomography scans were reviewed in patients who underwent elective infrarenal aortic aneurysm repair. Thrombus sac volume was obtained using a Hounsfield unit restricted region growth algorithm. Co-morbid conditions such as diabetes mellitus and post-operative complications were evaluated compared to thrombus sac volume. Receiver-operator characteristic curves were generated for thrombus sac volume and patients on the various cardiovascular pharmacotherapies. Results A total of 266 patients (mean age = 72.6 ± 0.6 years; mean thrombus sac volume = 58.7 (34.4-89.0) cm3) were identified. Acetylsalicylic acid use was associated with a decreased thrombus sac volume ≤50 cm3(AUC = 0.616, p = 0.013) whereas statins ( p = 0.26), angiotensin-converting enzyme inhibit...Continue Reading

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Software Mentioned

SAS
TeraRecon iNtuition Imaging
Plavix

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