Document Detail


The Cardiac Cycle is a Major Contributor to Variability in Size Measurements of Abdominal Aortic Aneurysms by Ultrasound.
MedLine Citation:
PMID:  22018525     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIM: The objective of the study was to evaluate the impact of the cardiac cycle on ultrasound measurements of abdominal aortic aneurysm (AAA) diameters. METHODS: In total, 603 AAAs detected by screening were investigated with respect to the maximal systolic and diastolic anterior-posterior aortic diameters during the cardiac cycle using recorded ultrasound video sequences. RESULTS: On average, the systolic AAA diameter was 41.60 mm, and the diastolic AAA diameter was 39.63 mm with a paired mean difference at 1.94 mm (p < 0.0001). No association between aneurysmal size and difference in systolic and diastolic size was noted. The mean difference and variability between two observers, one measured during peak-systole and the other measured during end-diastole, was 2.65 and 2.21 mm, respectively, as compared with 0.86 and 1.52 mm, respectively, when both were measured during the peak of systole. The intraobserver variability was 0.94 during systole, 1.18 during diastole and 1.94 mm when systole and diastole measurements were combined. CONCLUSION: The lack of a standardised measurement of the AAA diameter during the cardiac cycle is a potential major contributor to the variability in ultrasonography measurements.
Authors:
N Grøndal; M B Bramsen; M D Thomsen; C B Rasmussen; J S Lindholt
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-20
Journal Detail:
Title:  European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery     Volume:  -     ISSN:  1532-2165     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9512728     Medline TA:  Eur J Vasc Endovasc Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.
Affiliation:
Vascular Research Unit, Viborg Hospital, Postbox 130, 8800 Viborg, Denmark.
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