The impact of bladder shape on the ultrasonographic measurement of bladder volume in children

Kuzmić, Andrea Cvitković; Brkljačić, Boris; Ivanković, Davor

doi:10.1007/s00247-003-0945-2

Cited by 11 publications

(16 citation statements)

References 14 publications

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“…The ellipsoid bladder type decreased and the cuboid bladder type increased towards full term. The percentage distribution of the bladder shapes obtained in the present study during the fetal period and the percentage distribution of the bladder shapes obtained from previous studies in children (Kuzmic et al, 2003) and adults (Bih et al, 1998) were compared (Table 7). There was a significant difference in percentage distributions between our study and other studies (P < 0.001, v 2 : 63.462).…”

Section: Discussionmentioning

confidence: 99%

“…(Sugaya et al, 2002), our data on bladder angle might be useful in studies of the functional problems of the bladder. In previous studies, Kuzmic et al (2003) and Bih et al (1998) used US to study the shapes of the bladder in children from 9 months to 17 ages and adults, respectively, and described some bladder shapes such as round, ellipsoid, cuboid, and triangular. In the present study, bladder shapes during the fetal period were found to include all four types.…”

Section: Discussionmentioning

confidence: 99%

“…6. The shape of fetal bladders were classified into different shapes by using a method established in the previous studies (Bih et al, 1998;Kuzmic et al, 2003). The shape of each bladder wasdrawn on paper during the dissection by the person performing the dissection and at the end of the study all the bladder figures were classified into four different shapes: Type 1: ellipsoid, Type 2: round, Type 3: cuboid, Type 4: triangular.…”

Section: Methodsmentioning

confidence: 99%

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Anatomical development of urinary bladder during the fetal period

et al. 2008

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The aim of this study was to determine the development, location, and size of the urinary bladder during the fetal period. The study was performed on 149 human fetuses between 9 and 40 weeks of gestation. The location of the urinary bladder with respect to transverse plane between the highest point of pubic symphysis and the sacral promontory and median sagittal plane was first determined. The dimensions and the angle of the urinary bladder were measured, and bladder shapes were determined. In addition, the edges of the vesical trigone were measured. There was no significant difference between sexes for any of the parameters (P > 0.05). A significant correlation was observed between all parameters and gestational age (P < 0.001). The urinary bladder was located above the transverse plane in most of the cases (83%) and in the median sagittal plane in every case. It was determined that the angle of bladder did not change and the mean value of the angle was 151 degrees during the fetal period. Bladder was categorized into four different shapes (ellipsoid, round, cuboid, and triangular), and the most common shape found during the fetal period was cuboid. The vesical trigone was an isosceles triangle during the fetal period. The new data provided by this study will enable evaluation of the development of the fetal urinary bladder, and should be useful in several fields such as anatomy, fetopathology, medical imaging, obstetrics, and pediatric urology.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Anatomical development of urinary bladder during the fetal period

et al. 2008

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“…Accurate estimation of bladder volume must take into consideration the bladder shape. 15,16 As outlined in detail by Kuzmic et al 16 we classified bladder shape as round, ellipsoid, cuboid, triangular, or undefined. Estimated bladder volume (EBV) was then calculated with the following equation:…”

Section: Definitionsmentioning

confidence: 99%

“…Specifically, the k values used were 0.561 for round, 0.923 for cuboid, 0.802 for ellipsoid, 0.623 for triangular, and 0.749 for undefined, as recommended by Kuzmic et al 16 Estimated bladder capacity (EBC) was defined using the following validated age-based equation as originally presented by Kaefer et al: 17 EBC (in mL) = 133.08 × Age 0. 4 We then calculated the percent of expected bladder capacity (PEBC) expressed as a percentage by dividing the EBV by the EBC as follows:…”

Section: Definitionsmentioning

confidence: 99%

The Effect of a Full Bladder on Proportions of Diagnostic Ultrasound Studies in Children with Suspected Appendicitis

Ross

Selby

Poonai

et al. 2016

CJEM

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Objectives: We examined the effect of a full bladder on proportions of diagnostic ultrasound (US) studies in children with suspected appendicitis. We also examined the effect of a full bladder on proportions of fully visualized ovaries on US in children with suspected appendicitis. Methods: We conducted a retrospective health record review of children aged 2-17 years presenting to a tertiary pediatric emergency department (ED) with suspected appendicitis who had an ultrasound performed. We compared proportions of diagnostic US studies in children with full and sub-optimally filled bladders. We also compared proportions of ovarian visualization in females with full and sub-optimally filled bladders. Results: 678 children were included in our final analysis. The proportion of diagnostic US studies did not vary significantly between groups with a full (132/283, 47%, 95% confidence interval [CI] 38%-56%) or sub-optimally filled bladder (205/ 395, 52%, 95% CI 47%-57%) (p = 0.17). Rates of ovarian visualization were higher in females with a full bladder (196/ 205, 96%, 95% CI 93%-99%) compared to those with a suboptimally filled bladder (180/223, 81%, 95% CI 76%-86%) (p < 0.01). Conclusions: Administrators and clinical decision makers should consider removing routine bladder filling practice from current pediatric appendicitis protocols in males and in pre-pubertal females where ovarian pathology is not suspected. Selective bladder filling prior to US should be performed in females when ovarian pathology is suspected. Conclusions: Les gestionnaires et les décideurs en matière de pratiques cliniques devraient envisager le retrait du remplissage systématique de la vessie, des protocoles actuels de traitement de l'appendicite, chez les garçons et chez les filles prépubères ainsi que chez les filles chez qui tout doute d'affection des ovaires est écarté. Par contre, on devrait procéder à un remplissage sélectif de la vessie avant une échographie chez les filles chez qui il y a des doutes quant à l'existence d'une affection des ovaires.

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Getting started in paediatric emergency medicine point‐of‐care ultrasound: Five fundamental applications

Snelling

2020

Australas J Ultrason Med

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Point‐of‐care ultrasound is a valuable tool in the Paediatric Emergency Medicine department. It can be utilised at the patient bedside to augment the physical examination, improving clinical accuracy. Alternatively, it can safeguard needle guided procedures and improve their success rate. It allows real‐time information to be gathered without exposing the child to ionising radiation. This article outlines five fundamental applications and how it can be incorporated into clinical practice.

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The impact of bladder shape on the ultrasonographic measurement of bladder volume in children

Abstract: Bladder shape has considerable impact on the accuracy of US estimation of bladder volume in children. Correction coefficients should be used for volume measurements of different bladder shapes.

Cited by 11 publications

References 14 publications

Anatomical development of urinary bladder during the fetal period

Anatomical development of urinary bladder during the fetal period

The Effect of a Full Bladder on Proportions of Diagnostic Ultrasound Studies in Children with Suspected Appendicitis

Getting started in paediatric emergency medicine point‐of‐care ultrasound: Five fundamental applications

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