Direct Comparison of the Thickness Of The Parietal Peritoneum Using Peritoneal Biopsy and Ultrasonography of the Abdominal Wall in Patients Treated with Peritoneal Dialysis.

医学 腹膜 腹膜透析 腹膜腔 腹膜炎 腹膜液 放射科 超声波 腹壁 连续不卧床腹膜透析 活检 外科
作者
Alferso C. Abrahams,Amélie Dendooven,Jan Willem van der Veer,Rens Wientjes,Raechel J. Toorop,Ronald L. A. W. Bleys,Antoni P. A. Hendrickx,Maarten S. van Leeuwen,Quido G. de Lussanet,Marianne C. Verhaar,Gerard Stapper,Tri Q. Nguyen
出处
期刊:Peritoneal Dialysis International [SAGE Publishing]
卷期号:39 (5): 455-464 被引量:7
标识
DOI:10.3747/pdi.2018.00108
摘要

Background:Long-term treatment with peritoneal dialysis (PD) results in peritoneal fibrosis. Peritoneal biopsies have been used to determine the severity of fibrosis. Ultrasonography (US) of the abdominal wall has been used to measure peritoneal thickness non-invasively. However, direct comparison of both methods in the same patient has never been done. Furthermore, the validity of US to measure peritoneal thickness has not been investigated.Methods:We performed 3 studies: 1) a human biopsy study to compare US measurement of peritoneal thickness with histological examination; 2) a human cadaver study to investigate the effect of removing the peritoneum on US results; and 3) a phantom study in which we used US to measure the thickness of membrane-like structures with a known thickness to investigate the influence of different US settings.Results:The median thickness in biopsies of the peritoneum was 113 μm (interquartile range [IQR] 72 -129 μm), while this was 370 μm (IQR 324 - 458 μm) when measured by US (p < 0.0001). The mean difference between the 2 measures was -257 μm (limits of agreement -4.6 and -511 μm). In the cadaver study, removal of the peritoneum did not have an effect on the presence or thickness of the hyperechoic line reported to represent the peritoneum. In the phantom study, results were highly dependent on frequency of the transducer, scan depth, and gain settings.Conclusions:Ultrasonography results differ markedly from histological measurement using peritoneal biopsies. However, the hyperechoic line generated by US represents the interface between 2 neighboring tissues and not a separate morphological structure. Moreover, its thickness is greatly influenced by user-defined US settings.
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