Impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosis
Objective: To evaluate the effect of pre-void and post-void bladder volume on the anteroposterior (AP) diameter of the renal pelvis in asymptomatic pediatric hydronephrosis and to determine its influence on ultrasonographic measurement variability. Method: A retrospective analysis was conducted o...
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Aydın Pediatric Society
2025-06-01
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| Series: | Trends in Pediatrics |
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| Online Access: | https://trendspediatrics.com/article/view/228 |
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| author | Ahmet Tanyeri Emir Hüseyin Nevai Mehmet Burak Çildağ Mustafa Gök |
| author_facet | Ahmet Tanyeri Emir Hüseyin Nevai Mehmet Burak Çildağ Mustafa Gök |
| author_sort | Ahmet Tanyeri |
| collection | DOAJ |
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Objective: To evaluate the effect of pre-void and post-void bladder volume on the anteroposterior (AP) diameter of the renal pelvis in asymptomatic pediatric hydronephrosis and to determine its influence on ultrasonographic measurement variability.
Method: A retrospective analysis was conducted on 113 children aged 4–9 years who were referred for renal ultrasonography (US) between 2019 and 2023. Patients were excluded if they had end-stage renal disease, congenital anomalies of the kidney and urinary tract, polycystic kidney disease, bilateral hydronephrosis, prior renal surgery, suboptimal image quality, or pathological findings on additional diagnostic tests such as scintigraphy or voiding cystourethrography. Standardized protocols were used to measure the AP diameter of the renal pelvis and bladder volume in both pre-void and post-void states, utilizing the ellipsoid formula. Paired t-tests and Pearson’s correlation coefficient were applied for statistical analysis.
Results: The mean AP diameter of the renal pelvis significantly decreased from 7.43 ± 1.90 mm in the pre-void state to 5.62 ± 1.46 mm in the post-void state (p < 0.05). Similarly, bladder volume was markedly reduced from 183.6 ± 88.0 mL to 16.4 ± 14.9 mL (p < 0.05). Pearson’s correlation analysis revealed a strong positive correlation between pre-void bladder volume and the reduction in AP diameter (r = 0.65, p < 0.05), demonstrating the considerable effect of bladder volume on renal pelvic measurements.
Conclusion: Incorporating pre- and post-void measurements into routine renal ultrasound protocols may enhance diagnostic accuracy, reduce variability, and improve clinical decision-making in pediatric hydronephrosis evaluation.
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| format | Article |
| id | doaj-art-c9ef7fcbc9c84b0b8281e5a4de9fd90d |
| institution | Matheson Library |
| issn | 2792-0429 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Aydın Pediatric Society |
| record_format | Article |
| series | Trends in Pediatrics |
| spelling | doaj-art-c9ef7fcbc9c84b0b8281e5a4de9fd90d2025-07-01T12:32:50ZengAydın Pediatric SocietyTrends in Pediatrics2792-04292025-06-016210.59213/TP.2025.228Impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosisAhmet Tanyeri0https://orcid.org/0000-0002-1097-1172Emir Hüseyin Nevai1https://orcid.org/0000-0002-0907-0182Mehmet Burak Çildağ2https://orcid.org/0000-0003-2371-3540Mustafa Gök3https://orcid.org/0000-0001-7021-0984Department of Radiology, Faculty of Medicine, Adnan Menderes University, Aydın, TürkiyeDepartment of Radiology, Faculty of Medicine, Adnan Menderes University, Aydın, TürkiyeDepartment of Radiology, Faculty of Medicine, Adnan Menderes University, Aydın, TürkiyeDepartment of Radiology, Faculty of Medicine, Adnan Menderes University, Aydın, Türkiye Objective: To evaluate the effect of pre-void and post-void bladder volume on the anteroposterior (AP) diameter of the renal pelvis in asymptomatic pediatric hydronephrosis and to determine its influence on ultrasonographic measurement variability. Method: A retrospective analysis was conducted on 113 children aged 4–9 years who were referred for renal ultrasonography (US) between 2019 and 2023. Patients were excluded if they had end-stage renal disease, congenital anomalies of the kidney and urinary tract, polycystic kidney disease, bilateral hydronephrosis, prior renal surgery, suboptimal image quality, or pathological findings on additional diagnostic tests such as scintigraphy or voiding cystourethrography. Standardized protocols were used to measure the AP diameter of the renal pelvis and bladder volume in both pre-void and post-void states, utilizing the ellipsoid formula. Paired t-tests and Pearson’s correlation coefficient were applied for statistical analysis. Results: The mean AP diameter of the renal pelvis significantly decreased from 7.43 ± 1.90 mm in the pre-void state to 5.62 ± 1.46 mm in the post-void state (p < 0.05). Similarly, bladder volume was markedly reduced from 183.6 ± 88.0 mL to 16.4 ± 14.9 mL (p < 0.05). Pearson’s correlation analysis revealed a strong positive correlation between pre-void bladder volume and the reduction in AP diameter (r = 0.65, p < 0.05), demonstrating the considerable effect of bladder volume on renal pelvic measurements. Conclusion: Incorporating pre- and post-void measurements into routine renal ultrasound protocols may enhance diagnostic accuracy, reduce variability, and improve clinical decision-making in pediatric hydronephrosis evaluation. https://trendspediatrics.com/article/view/228renal pelvishydronephrosisultrasonographyurinary bladdervolumepediatrics |
| spellingShingle | Ahmet Tanyeri Emir Hüseyin Nevai Mehmet Burak Çildağ Mustafa Gök Impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosis Trends in Pediatrics renal pelvis hydronephrosis ultrasonography urinary bladder volume pediatrics |
| title | Impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosis |
| title_full | Impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosis |
| title_fullStr | Impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosis |
| title_full_unstemmed | Impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosis |
| title_short | Impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosis |
| title_sort | impact of bladder volume on renal pelvis dimensions in pediatric hydronephrosis |
| topic | renal pelvis hydronephrosis ultrasonography urinary bladder volume pediatrics |
| url | https://trendspediatrics.com/article/view/228 |
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