Abstract:
OBJECTIVE:To determine the more useful parameters of urethral resistance and bladder contractile power to explain the values of maximum flow and postvoid residual urine observed in free uroflowmetry and appropriately assess the voiding dynamics in childhood. METHODS:A cross-sectional study was carried out in 68 children (46 girls and 22 boys) with a mean age of 8.9 years. These children were subjected to free uroflowmetry in order to determine the maximum flow rate and the postvoid residual urine, and to a complete urodynamic study with perineal surface electromyography in order to determine the parameters of urethral resistance and bladder contractile power. A univariate linear regression model was built from these parameters for explanatory purposes. The independent variables were the parameters of the urodynamic study and the outcome variables were the value of the maximum flow in the free uroflowmetry and the proportion of postvoid residual urine in relation to the voiding volume of the free uroflowmetry. The resulting models were validated in order to determine its loss of predicting power (shrinkage). For this purpose, we used two other independent series: one comprised 50 patients (34 girls and 16 boys) extracted from the same sample as the derived model, and the other comprised 85 patients (53 girls and 32 boys) from another population. RESULTS:The multivariate model demonstrated that the maximum flow of the free uroflowmetry has a direct relationship with the square root of the voiding volume and the bladder contractile power [measured by Schafer's projected isometric pressure (PIP)] and an inverse relationship with the urethral resistance measured by means of a parameter (URA) and with the presence of electromyographic perineal activity (EMG) during voiding. Similarly, the proportion of postvoid residual urine has a direct relationship with the urethral resistance (measured by means of the parameter URA) and with the inverse function of the projected isometric pressure (I/PIP). The shrinkage of the multivariate models, when compared with other series, ranged from 26.9% and 1.3%. CONCLUSIONS:The urodynamic evaluation of the lower urinary tract in childhood can be carried out appropriately by means of the determination of the urethral resistance by the parameter URA and of the bladder contractile power by the projected isometric pressure (PIP), obtaining as a limit of normal values a URA of 16 cm H2O and a PIP of 105 cm H2O.
journal_name
Arch Esp Uroljournal_title
Archivos espanoles de urologiaauthors
Casado JS,Vírseda Chamorro M,Leva Vallejo M,Fernández Lucas C,Aristizábal Agudelo JM,de la Fuente Trabado Msubject
Has Abstractpub_date
2002-03-01 00:00:00pages
177-89issue
2eissn
0004-0614issn
1576-8260journal_volume
55pub_type
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
doi:
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abstract::Endometriosis is relatively frequent in females of menstrual age and consists in the appearance of active endometrial tissue at sites other than the uterine cavity (genital system or adjacent organs). Endometrial tissue has been described to colonize the urinary system, particularly the urinary bladder. The most commo...
journal_title:Archivos espanoles de urologia
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abstract:OBJECTIVE:Cystic tumors of the adrenal gland are uncommon, but are being increasingly more frequently diagnosed during routine radiological evaluation as "incidentalomas". We discuss the differential diagnosis, therapeutic approach and the existing controversies concerning the management of this tumor type. METHODS:Tw...
journal_title:Archivos espanoles de urologia
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更新日期:1998-10-01 00:00:00
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journal_title:Archivos espanoles de urologia
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更新日期:1991-03-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
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更新日期:1991-09-01 00:00:00
abstract:OBJECTIVE:To describe a case of vasitis nodosum causing spontaneous recanalization of the vas deferens. METHODS:Herein we describe a patient who had undergone vasectomy 9 years earlier. A nodule in the vas deferens arising from granulomatous reaction had progressed to vasitis nodosum, causing spontaneous recanalizatio...
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更新日期:1997-06-01 00:00:00
abstract::Prostate cancer (PCa) is the most common non-skin malignancy among men world-wide. PCa incidence is higher among African American (AA) menin comparison to the white population. Men with a previous history of PCa in first-line relatives carry also an increased risk for this disease. The incidence of PCa diminished in U...
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
doi:
更新日期:1994-05-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章,评审
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更新日期:2003-03-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
doi:
更新日期:1992-07-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
doi:10.4321/s0004-06142007000500008
更新日期:2007-06-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
doi:10.4321/s0004-06142006000900005
更新日期:2006-11-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章,评审
doi:
更新日期:2004-11-01 00:00:00
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doi:
更新日期:1979-01-01 00:00:00
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pub_type: 杂志文章
doi:
更新日期:2019-11-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
doi:
更新日期:1994-07-01 00:00:00
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章,评审
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更新日期:2007-04-01 00:00:00
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journal_title:Archivos espanoles de urologia
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doi:
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journal_title:Archivos espanoles de urologia
pub_type: 杂志文章,评审
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更新日期:1993-11-01 00:00:00
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pub_type: 临床试验,杂志文章
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journal_title:Archivos espanoles de urologia
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更新日期:1998-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:1995-01-01 00:00:00
abstract::We report a case of retroperitoneal ganglioneuroma that had been incidentally discovered during ultrasound evaluation in a young female patient. The plain X-ray, IVP and ultrasonography only revealed the presence of a retroperitoneal mass and its approximate size. CT and arteriography provided further information rela...
journal_title:Archivos espanoles de urologia
pub_type: 杂志文章
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更新日期:1990-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:1999-09-01 00:00:00
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doi:
更新日期:1997-09-01 00:00:00
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journal_title:Archivos espanoles de urologia
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更新日期:1993-06-01 00:00:00