Erratum: Joint practice guideline for sterile technique during vascular

摘要

We thank McDermott and colleagues for their feedback regarding our article (1), and we thank the Editor for this opportunity to respond. We agree that the venous anatomy is dynamic and influenced by many physiologic factors, and therefore the measurements of iliac venous diameters are likely to be variable. During the development of our study (1), more than 60 venous measurements were performed to establish method repeatability and reproducibility among subjects who underwent repeated computed tomographic (CT) imaging across several years. We found an overall relative standard deviation of 10.8% (intersample range, -18.5% to 19.1%). Although McDermott et al (2) found an average 23% decrease in venous stenosis on their repeated measurements of May-Thurner syndrome anatomy, there are no large population studies that incorporate a constant imaging modality to adequately characterize the true magnitude of the anatomic variance.