Variation in urinary flow according to voiding position in normal males
1999; Wiley; Volume: 18; Issue: 6 Linguagem: Inglês
10.1002/(sici)1520-6777(1999)18
ISSN1520-6777
AutoresTomonori Yamanishi, Kosaku Yasuda, Ryuji Sakakibara, Takamichi Hattori, Masahiro Minamide, Takao Yuki, Haruo Itô,
Tópico(s)Urinary Tract Infections Management
ResumoNeurourology and UrodynamicsVolume 18, Issue 6 p. 553-557 Original Clinical Article Variation in urinary flow according to voiding position in normal males Tomonori Yamanishi, Tomonori Yamanishi Department of Urology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorKosaku Yasuda, Corresponding Author Kosaku Yasuda Department of Urology, Dokkyo Medical School, Koshigaya Hospital, Saitama, JapanDepartment of Urology, Dokkyo Medical School, Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya City, Saitama 343, JapanSearch for more papers by this authorRyuji Sakakibara, Ryuji Sakakibara Department of Neurology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorTakamichi Hattori, Takamichi Hattori Department of Neurology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorMasahiro Minamide, Masahiro Minamide Department of Urology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorTakao Yuki, Takao Yuki Department of Urology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorHaruo Ito, Haruo Ito Department of Urology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this author Tomonori Yamanishi, Tomonori Yamanishi Department of Urology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorKosaku Yasuda, Corresponding Author Kosaku Yasuda Department of Urology, Dokkyo Medical School, Koshigaya Hospital, Saitama, JapanDepartment of Urology, Dokkyo Medical School, Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya City, Saitama 343, JapanSearch for more papers by this authorRyuji Sakakibara, Ryuji Sakakibara Department of Neurology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorTakamichi Hattori, Takamichi Hattori Department of Neurology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorMasahiro Minamide, Masahiro Minamide Department of Urology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorTakao Yuki, Takao Yuki Department of Urology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this authorHaruo Ito, Haruo Ito Department of Urology, Chiba University, School of Medicine, Chiba city, Chiba, JapanSearch for more papers by this author First published: 21 October 1999 https://doi.org/10.1002/(SICI)1520-6777(1999)18:6 3.0.CO;2-YCitations: 29AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Our objective was to study whether the urinary flow rate would vary according to voiding position. Twenty-one normal healthy male volunteers aged 24 to 40 years (mean, 29 years) were studied. The bed used was designed so that a hole could be opened at its center for voiding, and the bed could be bent at two points so that the subject could void in various positions. Urinary flow was measured with a portable uroflowmeter (P-Flow), which permits measuring urinary flow rate. Each subject assumed five voiding positions (standing, sitting, lateral, supine, and prone) in random order. Urinary flow was measured at least twice in each position to record a stable voiding. For voiding in the lateral position, subjects were instructed to void while bending the upper leg to keep an open angle between the legs. All subjects were also instructed to void without increasing abdominal pressure. Maximum flow rate was 20.7 ± 6.59 mL/sec with voided volume of 262 ± 77.8 mL in the lateral, 22.1 ± 7.05 mLl/sec with voided volume of 309 ± 130 mL in the supine, 25.0 ± 8.25 mL/sec with voided volume of 287 ± 122 mL in sitting, 27.1 ± 8.89 mL/sec with voided volume of 263 ± 102 mL in the standing, and 28.7 ± 10.6 mL/sec with voided volume of 303 ± 98 mL (mean ± SD) in the prone positions. The maximum and mean urinary flow rates were greatest in the prone position. With regard to these parameters, significant differences were noted between the prone and lateral positions and between the prone and supine positions. In conclusions, the maximum urinary flow rate was highest in the prone position, followed by the standing, sitting, supine, and finally the lateral positions in normal males. Neurourol. Urodynam. 18:553–557, 1999. © 1999 Wiley-Liss, Inc. REFERENCES de la Rosette JJMCH, Witjes WPJ, Debruyne FMJ, Kersten PL, Wijkstra H. 1996. 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