Prospective 3D ultrasonographic evaluation of immediate postpartum urine retention volume in 100 women who delivered vaginally

Demaria, F.; Amar, N.; Biau, David; Fritel, Xavier; Porcher, Raphaël; Amarenco, G.; Madelenat, P.; Bénifla, Jean-Louis

doi:10.1007/s00192-004-1159-3

Cited by 11 publications

(3 citation statements)

References 24 publications

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“…Demaria et al found that using a commercial bladder scanner with a special 3D ultrasound probe is accurate for estimating immediate postpartum urine retention volume in women who delivered vaginally [22]. Using a commercial bladder scanner is not economical due to the high cost, and it only has a single function, i.e., to check the volume of bladder residual urine [23].…”

Section: Discussionmentioning

confidence: 99%

Novel Three-Dimensional Bladder Reconstruction Model from B-Mode Ultrasound Image to Improve the Accuracy of Bladder Volume Measurement

Chang

Liu

et al. 2021

Sensors

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Traditional bladder volume measurement from B-mode (two-dimensional) ultrasound has been found to produce inaccurate results, and thus in this work we aim to improve the accuracy of measurement from B-mode ultrasound. A total of 75 electronic medical records including ultrasonic images were reviewed retrospectively from 64 patients. We put forward a novel bladder volume measurement method, in which a three-dimensional (3D) reconstruction model was established from conventional two-dimensional (2D) ultrasonic images to estimate the bladder volume. The differences and relationships were analyzed among the actual volume, the traditional estimated volume, and the new reconstruction model estimated volume. We also compared the data in different volume groups from small volume to high volume. The mean actual volume is 531.8 mL and the standard deviation is 268.7 mL; the mean percentage error of traditional estimation is −28%. In our new bladder measurement method, the mean percentage error is −10.18% (N = 2), −4.72% (N = 3), −0.33% (N = 4), and 2.58% (N = 5). There is no significant difference between the actual volume and our new bladder measurement method (N = 4) in all data or the divided four groups. The estimated volumes from the traditional method or our new method are highly correlated with the actual volume. Our data show that the three-dimensional bladder reconstruction model provides an accurate measurement from conventional B-mode ultrasonic images compared with the traditional method. The accuracy is seen across different groups of volume, and thus we can conclude that this is a reliable and economical volume measurement model that can be applied in general software or in apps on mobile devices.

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Section: Discussionmentioning

confidence: 99%

Novel Three-Dimensional Bladder Reconstruction Model from B-Mode Ultrasound Image to Improve the Accuracy of Bladder Volume Measurement

Chang

Liu

et al. 2021

Sensors

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“…Previous studies have investigated the accuracy of bladder scanners in postpartum women. [3][4][5][6][7] However, only a few studies have been conducted in the United States. Some studies did not maintain consistent time intervals between bladder scanning and catheterization.…”

Section: Why This Mattersmentioning

confidence: 99%

“…Previous studies have investigated the accuracy of bladder scanners in postpartum women 3–7 . However, only a few studies have been conducted in the United States.…”

mentioning

confidence: 99%

Accuracy of Bladder Scanner in Measuring Bladder Volumes in Postpartum Women

Zheng,

Geynisman-Tan,

Knoll

et al. 2023

UROGC

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Importance Ultrasound bladder scanners may provide a less invasive method to measure postpartum urinary volume, but their accuracy must be validated. Objective The objective of this study was to evaluate the accuracy of a bladder scanner in measuring bladder volumes in postpartum women. The secondary objective was to evaluate the effect of obesity on scanner accuracy. Study Design This prospective cohort study included women older than 18 years who gave birth vaginally at term gestation. After delivery, we obtained 3 sequential measurements of the bladder volume using an ultrasound bladder scanner. We then measured true bladder volume by transurethral catheterization. The primary outcome was the absolute difference between the bladder scanner volume and the catheterized volume. A Wilcoxon signed-rank test was used to compare absolute median difference between the bladder scan volume and true catheter volume. Repeated-measures analysis of variance and linear regression were used to evaluate the effect of obesity on the accuracy of the bladder scanner. Results We enrolled 70 patients (61.4% nulliparous, 38.6% multiparous). One delivery was vacuum-assisted, 4 were forceps-assisted, and 65 were spontaneous vaginal. The median age was 34 years, and median body mass index was 30.5. Median difference between bladder scanner and catheter volume was 42.7 mL (P < 0.001), with the scanner underestimating true volume 82.9% of the time. The scanner was less accurate in patients with a body mass index ≥ 30 (P = 0.001). Conclusions The bladder scanner is less accurate than catheterized urine volume. However, the median difference between the bladder scanner and the catheterized volume is 42.7 mL, making it suitable for clinical use. Accuracy deteriorates in obese patients.

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Delivery-related risk factors for covert postpartum urinary retention after vaginal delivery

et al. 2015

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Introduction and hypothesisPostpartum urinary retention (PUR) is a common consequence of bladder dysfunction after vaginal delivery. Patients with covert PUR are able to void spontaneously but have a postvoid residual bladder volume (PVRV) of ≥150 mL. Incomplete bladder emptying may predispose to bladder dysfunction at a later stage of life. The aim of this cross-sectional study was to identify independent delivery-related risk factors for covert PUR after vaginal delivery in order to identify women with an increased risk of covert PUR.MethodsThe PVRV of women who delivered vaginally was measured after the first spontaneous micturition with a portable bladder-scanning device. A PVRV of 150 mL or more was defined as covert PUR. Independent risk factors for covert PUR were identified in multivariate regression analysis.ResultsOf 745 included women, 347 (47 %) were diagnosed with covert PUR (PVRV ≥150 mL), of whom 197 (26 %) had a PVRV ≥250 mL (75th percentile) and 50 (7 %) a PVRV ≥500 mL (95th percentile). In multivariate regression analysis, episiotomy (OR 1.7, 95 % CI 1.02 – 2.71), epidural analgesia (OR 2.08, 95 % CI 1.36 – 3.19) and birth weight (OR 1.03, 95 % CI 1.01 – 1.06) were independent risk factors for covert PUR. Opioid analgesia during labour (OR 3.19, 95 % CI 1.46 – 6.98), epidural analgesia (OR 3.54, 95 % CI 1.64 – 7.64) and episiotomy (OR 3.72, 95 % CI 1.71 – 8.08) were risk factors for PVRV ≥500 mL.ConclusionsEpisiotomy, epidural analgesia and birth weight are risk factors for covert PUR. We suggest that the current cut-off values for covert PUR should be reevaluated when data on the clinical consequences of abnormal PVRV become available.

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Prospective 3D ultrasonographic evaluation of immediate postpartum urine retention volume in 100 women who delivered vaginally

Cited by 11 publications

References 24 publications

Novel Three-Dimensional Bladder Reconstruction Model from B-Mode Ultrasound Image to Improve the Accuracy of Bladder Volume Measurement

Novel Three-Dimensional Bladder Reconstruction Model from B-Mode Ultrasound Image to Improve the Accuracy of Bladder Volume Measurement

Accuracy of Bladder Scanner in Measuring Bladder Volumes in Postpartum Women

Delivery-related risk factors for covert postpartum urinary retention after vaginal delivery

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