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- W2011014016 abstract "Aims To disclose the nature of the high-pressure voiding observed in small boys and to determine the influence of a transurethral catheter on voiding urodynamic parameters and reproducibility of these parameters. Materials and Methods Video-urodynamic studies (V-UDSs) were repeated twice in a single session using two different sized, 18G (Ø1.15 mm) and 7.4Fr (Ø2.50 mm), catheters in 9 boys aged 7.3 months (2–17) and compared with the maximum voiding detrusor pressure (Pdet max) values. Separately, in 20 boys aged 8.9 (1–34) months, V-UDSs using an 18G catheter were repeated twice, and fluoroscopic images and UDS were continuously recorded during the whole voiding phase and analyzed. Results There was no significant difference between the mean Pdet max measured by the 18G and 7.4Fr catheters (102.0 ± 22.5 vs. 94.7 ± 25.6 cmH2O, P = 0.42). Intermittent interruptions of the urinary stream due to detrusor–sphincter dyscoordination were observed in 92.5% (37/40) of voiding cycles. The true maximum voiding detrusor pressure (T-Pdet max), the maximum detrusor pressure recorded only when the urinary stream was actually detected, on the first and second voiding cycles were 86.9 ± 30.3 and 89.0 ± 31.7 cmH2O, respectively. The mean difference between Pdet max and T-Pdet max was 5.6 ± 11.4 cmH2O. The minimum detrusor pressure during voiding (33.6 ± 18.4 and 30.8 ± 16.3 cmH2O), the opening detrusor pressure and the number of stream interruptions were reproducible. Conclusions Small boys commonly void intermittently with a high detrusor pressure, which may be mainly due to detrusor–sphincter dyscoordination rather than the outflow obstruction caused by a transurethral catheter. Neurourol. Urodynam. 27:319–323, 2008. © 2007 Wiley-Liss, Inc." @default.
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- W2011014016 date "2008-01-01" @default.
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- W2011014016 title "The nature of high-pressure voiding in small boys and its relation with the influence of a transurethral catheter" @default.
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- W2011014016 doi "https://doi.org/10.1002/nau.20493" @default.
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