Determining the reliability of ultrasound measurements and the validity of the formulae for ultrasound estimation of postvoid residual bladder volume in postpartum women

Yip, Shing‐Kai; Sahota, Daljit Singh; Chang, A.M.Z.

doi:10.1002/nau.10112

Cited by 32 publications

(18 citation statements)

References 15 publications

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“…The most consistent formula by conventional ultrasound was 0.52×BHL (CUS1). This was in agreement with the work by Yip [23]. The reliability of the conventional ultrasound technique was affected by the irregular shape of the bladder and the difficulty in determining the actual bladder edge caused by either pelvic adiposity or postpartum bladder wall oedema.…”

Section: Discussionsupporting

confidence: 79%

Is Doppler planimetry a valid technique for the evaluation of postpartum urinary bladder volume?

2008

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The objective of this prospective study was to evaluate the accuracy of conventional 2D ultrasound (CUS) versus doppler planimetry (DP) in the assessment of postpartum urinary bladder volume compared to a true estimate using urethral catheterisation. Fifty-two women were assessed within 24 hours of delivery. Evaluation of bladder volume was performed using CUS (1-estimate) and DP (6-estimates). CUS had a higher correlation (r=0.796) with the true volume and lower % error than DP in the postpartum group. DP readings were highly reproducible (ICC 0.81) but tended to overestimate the true value especially with smaller volumes. DP was suboptimal for the assessment of the postpartum PVR. Postpartum evaluation using CUS is more accurate in calculating the true urinary volume.

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Section: Discussionsupporting

confidence: 79%

Is Doppler planimetry a valid technique for the evaluation of postpartum urinary bladder volume?

2008

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“…Also, both the NICE guideline on Postnatal Care and the WHO Technical Consultation on Postpartum and Postnatal Care state that if there is no voiding within 6 hours of birth and the struggle of voiding methods is not successful, the bladder volume should be assessed, and catheterization should be considered (21,22). Although ultrasonographic measurement of PVRBV in the postpartum patient is doubtful, due to postpartum uterine size (7), several authors (23,24) offer assessment of the bladder accurately by ultrasound, even in the postpartum period. In a recent review including 24 studies, it was concluded that a standard treatment guideline for PPUR is necessary, since there is no sufficient evidence about the catheterization methods for overt PPUR (25).…”

Section: Discussionmentioning

confidence: 99%

Postpartum urinary retention after vaginal delivery: Assessment of risk factors in a case-control study

Cavkaytar

Kokanali

Baylas

et al. 2014

J Turkish German Gynecol Assoc

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Objective:To assess the obstetrics risk factors for postpartum urinary retention after vaginal delivery. Material and Methods: Of 234 women with a vaginal delivery, 19 (8.1%) women who had postpartum urinary retention were cases, and 215 (91.9%) women who did not were controls. Postpartum urinary retention was defined as the presence of postvoid residual bladder volume ≥150 mL or the inability to void within 6 hours after vaginal delivery. Logistic regression analysis identified risk factors for urinary retention.Results: Prolonged duration of the second stage of labor (OR=0.46, 95% CI for OR=0.06-3.67, p<0.001), presence of episiotomy (OR=0.07, 95% CI for OR=0.01-0.68, p=0.022) and perineal laceration (OR=97.09, 95% CI for OR=7.93-1188.93, p<0.001), and birth weight of >4000 g for the newborn (OR=0.04, 95% CI for OR=0.01-0.20, p<0.001) were found as independent risk factors for postpartum urinary retention after vaginal delivery. Conclusion:Postpartum urinary retention after vaginal delivery is a relatively common condition. Awareness of risk factors, including prolonged second stage of labor, episiotomy, perineal lacerations, and macrosomic birth, may allow us to take the necessary precautions against this complication. (J Turk Ger Gynecol Assoc 2014; 15: 140-3)

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“…Ultrasound has been shown to be accurate and reproducible in diagnosing PUR [Yip et al, 2003], however, it is labor-intensive. On the other hand, ultrasound in conjunction with labor duration seems to be the best patient management protocol for the diagnosis of PUR.…”

Section: Discussionmentioning

confidence: 99%

Screening test model using duration of labor for the detection of postpartum urinary retention

Yip

Sahota

Pang

et al. 2005

Neurourology and Urodynamics

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Determining the reliability of ultrasound measurements and the validity of the formulae for ultrasound estimation of postvoid residual bladder volume in postpartum women

Abstract: The results of this study have shown that ultrasonic assessment of the PVRBV in the postpartum period is accurate, and it can be used as a guide to whether transurethral catheterization is necessary.

Cited by 32 publications

References 15 publications

Is Doppler planimetry a valid technique for the evaluation of postpartum urinary bladder volume?

Is Doppler planimetry a valid technique for the evaluation of postpartum urinary bladder volume?

Postpartum urinary retention after vaginal delivery: Assessment of risk factors in a case-control study

Screening test model using duration of labor for the detection of postpartum urinary retention

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