{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T06:48:55Z","timestamp":1782197335910,"version":"3.54.5"},"reference-count":10,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2007,8,13]],"date-time":"2007-08-13T00:00:00Z","timestamp":1186963200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neurourology and Urodynamics"],"published-print":{"date-parts":[[2008,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aims<\/jats:title><jats:p>To disclose the nature of the high\u2010pressure voiding observed in small boys and to determine the influence of a transurethral catheter on voiding urodynamic parameters and reproducibility of these parameters.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Video\u2010urodynamic studies (V\u2010UDSs) were repeated twice in a single session using two different sized, 18G (\u00d81.15 mm) and 7.4Fr (\u00d82.50 mm), catheters in 9 boys aged 7.3 months (2\u201317) and compared with the maximum voiding detrusor pressure (P<jats:sub>det max<\/jats:sub>) values. Separately, in 20 boys aged 8.9 (1\u201334) months, V\u2010UDSs using an 18G catheter were repeated twice, and fluoroscopic images and UDS were continuously recorded during the whole voiding phase and analyzed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There was no significant difference between the mean P<jats:sub>det max<\/jats:sub> measured by the 18G and 7.4Fr catheters (102.0\u2009\u00b1\u200922.5 vs. 94.7\u2009\u00b1\u200925.6 cmH<jats:sub>2<\/jats:sub>O, <jats:italic>P<\/jats:italic>\u2009=\u20090.42). Intermittent interruptions of the urinary stream due to detrusor\u2013sphincter dyscoordination were observed in 92.5% (37\/40) of voiding cycles. The true maximum voiding detrusor pressure (T\u2010P<jats:sub>det max<\/jats:sub>), the maximum detrusor pressure recorded only when the urinary stream was actually detected, on the first and second voiding cycles were 86.9\u2009\u00b1\u200930.3 and 89.0\u2009\u00b1\u200931.7 cmH<jats:sub>2<\/jats:sub>O, respectively. The mean difference between P<jats:sub>det max<\/jats:sub> and T\u2010P<jats:sub>det max<\/jats:sub> was 5.6\u2009\u00b1\u200911.4 cmH<jats:sub>2<\/jats:sub>O. The minimum detrusor pressure during voiding (33.6\u2009\u00b1\u200918.4 and 30.8\u2009\u00b1\u200916.3 cmH<jats:sub>2<\/jats:sub>O), the opening detrusor pressure and the number of stream interruptions were reproducible.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Small boys commonly void intermittently with a high detrusor pressure, which may be mainly due to detrusor\u2013sphincter dyscoordination rather than the outflow obstruction caused by a transurethral catheter. Neurourol. Urodynam. 27:319\u2013323, 2008. \u00a9 2007 Wiley\u2010Liss, Inc.<\/jats:p><\/jats:sec>","DOI":"10.1002\/nau.20493","type":"journal-article","created":{"date-parts":[[2007,8,13]],"date-time":"2007-08-13T16:48:04Z","timestamp":1187023684000},"page":"319-323","source":"Crossref","is-referenced-by-count":9,"title":["The nature of high\u2010pressure voiding in small boys and its relation with the influence of a transurethral catheter"],"prefix":"10.1002","volume":"27","author":[{"given":"Midori","family":"Ichino","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasuhiko","family":"Igawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satoshi","family":"Seki","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazuyoshi","family":"Iijima","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Osamu","family":"Ishizuka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Osamu","family":"Nishizawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2007,8,13]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(05)68226-2"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s002400100194"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1080\/03008880410015219"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.ju.0000108126.23417.17"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/nau.20370"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1464-410X.1999.00914.x"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1464-410x.1998.00567.x"},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1464-410X.1996.00106.x"},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1464-410X.1995.tb07682.x"},{"key":"e_1_2_1_11_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.ju.0000084298.49645.27"}],"container-title":["Neurourology and Urodynamics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fnau.20493","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/nau.20493","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,21]],"date-time":"2023-11-21T01:36:36Z","timestamp":1700530596000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/nau.20493"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,8,13]]},"references-count":10,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2008,4]]}},"alternative-id":["10.1002\/nau.20493"],"URL":"https:\/\/doi.org\/10.1002\/nau.20493","archive":["Portico"],"relation":{},"ISSN":["0733-2467","1520-6777"],"issn-type":[{"value":"0733-2467","type":"print"},{"value":"1520-6777","type":"electronic"}],"subject":[],"published":{"date-parts":[[2007,8,13]]}}}