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ENGLISH ABSTRACT
JOURNAL ARTICLE
[Clinical usefulness of the non-invasive functional study of the lower urinary tract voiding phase as a predictor of resolution after the first endoscopic treatment of vesico-ureteral reflux in children older than 3 years.]
Archivos Españoles de Urología 2019 January
OBJECTIVES: To determine the usefulnessof voiding diary (VD), uroflowmetry with electromyography(UF-EMG), bladder wall thickness (before micturition)(VWTUS) and residual urine (PVR) (ultrasound measure)in predicting the outcome of the first endoscopic treatment(1ENDT) of vesicoureteral reflux (VUR) in children> 3 years.
METHODS: Cross-sectional ambispective study of 48children with vesicoureteral reflux. Those with previousendoscopic treatment, age or neurological abnormalities and a history of urethralor abdominal surgery were excluded. The outcomevariable was the correctness (by isotopic cystography)three months after 1ENDT. Univariate and multivariateanalyses were performed through a Multilayer Perceptronnetwork and a logistic regression model EmpiricalBayesian penalized type LASSO Elastic net. Diagnosticaccuracy were determined.
RESULTS: Mean age of the sample was 6.8 +/- 2.28years. The rate of VUR correction after 1ENDT was 77%.The variables selected by both methods were: VD-retentionist(OR 3.90), high PVR (OR 2.69), high VWTUS (OR4.44). Normal UF-EMG was a preventive variable (OR0.38). Diagnostic accuracy (pSp=48.7%), UF+EMG (Se=27.3%(Se=72.7% (AUC=0.8 cut point 20 ml),VWTUS (Se=81.8% (AUC=0.8 cut point4.6 mm). There were no statistical differences betweenPVR and VWTUS. Combined use of UF+EMG+PVR(Se=90.9%in predicting the persistence of VUR after 1ENDT inchildren > 3 years. After screening with a VD, UF-EMG+ RPM combination could be useful to detect these patientsand propose a treatment that improves bladdervoiding function prior to surgery.
METHODS: Cross-sectional ambispective study of 48children with vesicoureteral reflux. Those with previousendoscopic treatment, age or neurological abnormalities and a history of urethralor abdominal surgery were excluded. The outcomevariable was the correctness (by isotopic cystography)three months after 1ENDT. Univariate and multivariateanalyses were performed through a Multilayer Perceptronnetwork and a logistic regression model EmpiricalBayesian penalized type LASSO Elastic net. Diagnosticaccuracy were determined.
RESULTS: Mean age of the sample was 6.8 +/- 2.28years. The rate of VUR correction after 1ENDT was 77%.The variables selected by both methods were: VD-retentionist(OR 3.90), high PVR (OR 2.69), high VWTUS (OR4.44). Normal UF-EMG was a preventive variable (OR0.38). Diagnostic accuracy (pSp=48.7%), UF+EMG (Se=27.3%(Se=72.7% (AUC=0.8 cut point 20 ml),VWTUS (Se=81.8% (AUC=0.8 cut point4.6 mm). There were no statistical differences betweenPVR and VWTUS. Combined use of UF+EMG+PVR(Se=90.9%in predicting the persistence of VUR after 1ENDT inchildren > 3 years. After screening with a VD, UF-EMG+ RPM combination could be useful to detect these patientsand propose a treatment that improves bladdervoiding function prior to surgery.
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