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Identifying the variables associated with pain during transrectal ultrasonography of the prostate

Authors Hou C, Lin Y, Hsieh M, Chen C, Chang P, Huang Y, Tsui K

Received 18 February 2015

Accepted for publication 16 May 2015

Published 24 August 2015 Volume 2015:9 Pages 1207—1212

DOI https://doi.org/10.2147/PPA.S83073

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Johnny Chen

Chen-Pang Hou,1,2 Yu-Hsiang Lin,1,2 Meng-Chiao Hsieh,3 Chien-Lun Chen,1,2 Phei-Lang Chang,1,2 Ying-Chen Huang,2 Ke-Hung Tsui1,2

1Department of Urology, Chang Gung Memorial Hospital at Linkou, 2School of Medicine, Chang Gung University, 3Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial Hospital at Chiayi, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan

Objective: The purpose of this study was to prospectively investigate the degree of pain experienced by the patients receiving transrectal ultrasonography (TRUS) of the prostate by applying a visual analog scale. We also identified the clinical parameters influencing pain during the TRUS examination.
Materials and methods: Records were obtained from a prospective database for male patients who received TRUS of prostate in the outpatient department of Chang Gung Memorial Hospital, Taiwan, from January 2014 to June 2014. The patients underwent a detailed physical examination and medical history review. Immediately after the TRUS examination, the patients completed questionnaires based on a ten-point visual analog pain scale. The variables of interest were age, body mass index, prostate volume, prostate sagittal length, prostate-specific antigen, previous TRUS experience, external hemorrhoids, anal surgical history, prostate calcification, and image artifact caused by stool in the rectum. All variables were correlated to the visual analog scale by applying multivariate regression analysis.
Results: By using linear regression analysis, we identified the independent factors that affected the pain score during the TRUS examination. The patients who received the examination for the first time or had longer prostate sagittal lengths, external hemorrhoids, anal surgical history, or stool stored in the rectum experienced more pain during the TRUS examination. Furthermore, the pain was reduced when we provided the patients with a detailed explanation before the procedure and allowed them to observe the real-time images during the examination.
Conclusion: Although a TRUS examination is uncomfortable for patients, after having identified the factors affecting pain, physicians can assist patients in reducing pain during the procedure, thus providing higher quality examinations.

Keywords: VAS, TRUS, ultrasound, pain score, transrectal, benign prostate hyperplasia, digital examination

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