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The impact of using inner-to-inner wall diameter measurement of abdominal aortic aneurysm

机译:使用内到内壁直径测量对腹主动脉瘤的影响

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Introduction Following recommendations from the National Abdominal Aortic Aneurysm Screening Programme (NAAASP), an audit was performed to assess the impact of measuring inner rather than outer aortic wall diameters during scans for abdominal aortic aneurysm. nnMethods Inner and outer aortic wall diameters were taken from a prospective series of 302 patients attending the Vascular Studies Unit at the Leicester Royal Infirmary for routine ultrasound screening or surveillance of their abdominal aorta. Absolute differences, as well as the potential impact on patient management, were assessed. nnResults The mean difference between measuring techniques was found to be 1.6 mm (95% CI 1.59–1.61 mm). Aortas close to the threshold for surgery were referred on average 8.7 months later than if their outer wall dimensions had been used. Additionally, 1.6% of aortas were considered normal using inner wall measurements, but aneurysmal when measured using the outer aortic walls. nnConclusion Mean differences between the two measurement techniques are small and well within acceptable levels of observer agreement. There is currently no evidence to suggest that a delay in aneurysm surgery of around nine months has a detrimental effect to either mortality or morbidity rates. Those patients falling just below the threshold for aneurysm (2.5–3.0 cm) remain a subject of review. nnKeywords
机译:引言根据国家腹主动脉瘤筛查计划(NAAASP)的建议,进行了一项审核,以评估在测量腹主动脉瘤期间测量主动脉内壁而不是外主动脉壁直径的影响。 nnMethods主动脉内外壁直径取自302名在莱斯特皇家医院血管研究室就诊的常规患者进行的常规超声筛查或腹主动脉监护的患者。评估了绝对差异以及对患者管理的潜在影响。结果测量技术之间的平均差异为1.6毫米(95%CI 1.59–1.61毫米)。与使用外壁尺寸相比,接近手术阈值的主动脉平均晚8.7个月转诊。另外,使用内壁测量值可将1.6%的主动脉视为正常,但使用外主动脉壁测量时可将动脉瘤视为正常。 nn结论两种测量技术之间的平均差异很小,并且在观察者同意的可接受水平内。目前尚无证据表明延迟约9个月的动脉瘤手术对死亡率或发病率有不利影响。那些刚好低于动脉瘤阈值(2.5-3.0 cm)的患者仍需接受复查。 nn关键字

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