Cystometry in Infants and Children With no Apparent Voiding Symptoms

Wen, Jianguo; Tong, Eddy C. K.

doi:10.1016/s0022-5347(01)62652-1

Cited by 8 publications

(7 citation statements)

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“…Male newborns can have dyscoordinated voiding patterns, with higher voiding pressures than females [9,10]. There was a significantly greater maximum voiding pressure after birth, of 73.9 cmH 2 O, in males than in females (66.1 cmH 2 O) [3]. A similar pathophysiology of voiding was reported in the male fetal pig, similarly due to dyscoordinated voiding implicated by a staccato flow.…”

Section: Discussionsupporting

confidence: 55%

“…High-grade VUR and high voiding pressures are common in male infants, probably caused by infravesical obstruction [1]. Gender-related voiding pressure differences in neonates are explained by a higher outflow resistance in males, subsequently elevating the micturition pressure [2,3]. The fetal prostate seems to be a possible component transiently obstructing the lower urinary tract, which might result in bladder and upper tract pathologies such as VUR, and in urethral valves or neurogenic bladders.…”

Section: Introductionmentioning

confidence: 99%

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Growth curves of the fetal prostate based on three‐dimensional reconstructions: a correlation with gestational age and maternal testosterone levels

et al. 2006

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OBJECTIVETo create a nomogram of the fetal growth of the human prostate corresponding to gestational age, and to investigate the relationship between the expansive growth of the fetal prostate and the maternal testosterone surge during pregnancy. MATERIALS AND METHODSIn all, 27 fetal prostates at 11-40 weeks of gestation, and seven neonatal specimens at 1-20 weeks after birth, were analysed. Serial sections of prostates were immunostained and examined using light microscopy. After modular image acquisition the volumes were calculated using three-dimensional reconstruction. The prostate volumes were correlated with gestational age, and related to reference testosterone levels during pregnancy. RESULTSThere was exponential growth of the fetal prostate with gestational age. The increasing volume of the prostate during the fetal period corresponded with maternal testosterone levels. In the second trimester there was a significant increase in prostate volume in relation to the bladder. In infants, macroscopically there was an inverse proportion between bladder size and prostate volume. CONCLUSIONSStarting from the second trimester there is distinct growth of the fetal prostate, obviously triggered by the maternal testosterone surge. In neonates there is an inversion of the dimensions between bladder and prostate. These results indicating exponential growth of the fetal prostate provide evidence of a gender-related transient infravesical obstruction in human fetuses. KEYWORDSfetal prostate, vesico-ureteric reflux, growth curves, testosterone, infravesical obstruction There are two papers in this section this month. The first, by authors from Austria, concerns growth curves of the fetal prostate, correlating gestational age and maternal testosterone using threedimensional reconstructions. The second, from the UK, investigated testicular microlithiasis, and found no convincing evidence that alone it is a premalignant condition.

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Section: Discussionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Growth curves of the fetal prostate based on three‐dimensional reconstructions: a correlation with gestational age and maternal testosterone levels

et al. 2006

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“…This is approximately four fold of the values reported for Values from 14 patients are missing due to inability to void and supine position. normal infants or children [Wen and Tong, 1998], and considerably higher than that reported for patients with posterior urethral valves (45.9 vs. 24%) [Glassberg, 2001]. Although, no signi¢cant di¡erence was observed in statistical analysis, DO in cases with urethral obstruction was more prominent than non-obstructed group (57 vs. 33.3%).…”

Section: Discussionmentioning

confidence: 75%

“…In healthy boys, maximum voiding pressure and the detrusor pressure during voiding were reported as 73.9 AE 16.6 cmH 2 O and 66.1 AE 13.1 cmH 2 O, respectively [Wen and Tong, 1998]. Same authors reported no signi¢cant di¡erence between girls and boys or between infants and children.…”

Section: Discussionmentioning

confidence: 99%

First report of overactive detrusor in association with hypospadias detected by urodynamic screening

Özkürkçügil

Güvenç

Dillioğlugil

2004

Neurourology and Urodynamics

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“…25 In addition, he voided with high pressures in the range of 100 cm H 2 O (reference 50-70 cm H 2 O). 32 Electromyography revealed incomplete sphincter relaxation. There was also evidence of detrusor overactivity on cystometry.…”

mentioning

confidence: 98%

Spontaneous improvement in urological dysfunction in children with congenital spinal lipomas of the conus medullaris

Badhiwala

Thompson²,

Lorenzo

et al. 2014

PED

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Congenital spinal lipomas of the conus (SLCs) are among the most common closed neural tube defects. The treatment of SLC is an area of controversy because the true natural history of this condition is unknown. Here, the authors present two cases of SLC presenting in infancy with compromised lower urinary tract function, which was objectively confirmed by abnormal urodynamic studies. In both cases, there was spontaneous improvement in urodynamic parameters, with stable normal urinary function at the long-term follow-up. Although cases of spontaneous radiological regression of SLC have very infrequently been reported, they have not been associated with the reversal of already present neurological deficits. This report reinforces the need for further delineation of the true natural history of SLC and highlights the dynamic nature of associated neurological compromise over time.

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Cystometry in Infants and Children With no Apparent Voiding Symptoms

Cited by 8 publications

References 0 publications

Growth curves of the fetal prostate based on three‐dimensional reconstructions: a correlation with gestational age and maternal testosterone levels

Growth curves of the fetal prostate based on three‐dimensional reconstructions: a correlation with gestational age and maternal testosterone levels

First report of overactive detrusor in association with hypospadias detected by urodynamic screening

Spontaneous improvement in urological dysfunction in children with congenital spinal lipomas of the conus medullaris

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