Examination techniques for endosonography of the anal canal
Examination techniques for endosonography of the anal canal
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DOI：
10.1007/s002619900345
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发表时间：
1998-05-01
影响因子：
--
通讯作者：
Kamm, M
中科院分区：
文献类型：
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作者：
Frudinger, A;Bartram, CI;Kamm, M
背景：确定患者体位或括约肌收缩是否影响括约肌厚度或缺陷评估。方法：对35例患者（女性30例，男性5例）进行肛门超声检查。25例患者在左侧侧卧位扫描，测量内括约肌厚度。10例患者在静息和挤压肛门时测量了内括约肌、纵肌、外括约肌和任何缺损的长度。结果：俯卧位和左侧侧卧位测量的内括约肌厚度无显著差异（95%一致限，-0.12 ~ 0.06）。静息状态下内括约肌、纵肌和外括约肌的厚度在拉伸过程中没有显著变化（95%一致性限分别为-0.44 ~ 0.3、-0.28 ~ 0.24和0.33 ~ 0.71）。挤压操作不影响缺陷的外观或长度（95%一致性限，-2.845至2.379）。俯卧位可使外括约肌前部更对称，并改善会阴的显像。结论：俯卧位检查为佳。挤压动作没有诊断价值。
Background: To determine whether patient position or sphincter contraction influences sphincter thickness or defect assessment.Methods: Anal endosonography was performed on 35 consecutive patients (30 women, five men). Twenty-five were scanned in the left lateral and prone positions, and the internal sphincter thickness was measured. In 10 patients, the internal sphincter, longitudinal muscle, external sphincter, and length of any defect were measured at rest and during anal squeeze.Results: There was no significant difference in internal sphincter thickness measured in the prone and left lateral positions (95% limits of agreement, -0.12 to 0.06). The thickness of the internal sphincter, longitudinal muscle, and external sphincter at rest did not change significantly during straining (95% limits of agreement, -0.44 to 0.3, -0.28 to 0.24, and 0.33 to 0.71, respectively). The squeeze maneuver did not influence defect appearance or length (95% limits of agreement, -2.845 to 2.379). Greater symmetry of the anterior part of the external sphincter and improved visualization of perineum was achieved in the prone position.Conclusion: Examination in the prone position is preferred. Squeeze maneuvers are of no diagnostic benefit.