OBJECTIVES: This study was conducted to determine the frequency of increased postvoiding residual volumes (PVRV) 3 days after delivery and to examine the associated risk factors. BACKGROUND: Increased PVRV-covert postpartum urinary retention, is an asymptomatic condition with possible long-term adverse effects. While early diagnosis and appropriate management can avoid long-term complications, screening is not routinely performed. By identifying risk factors, we could defi ne the group of patients suitable for screening. MATERIAL AND METHODS: This was a prospective observational study carried out over a 3-month period at the university teaching hospital in Bratislava, Slovakia. All participants underwent ultrasound determination of PVRV while 80 ml and more on day 3 was considered pathological. RESULTS: A total of 429 women were included in the study. The prevalence of covert post-partum urinary retention was 9.2 %. Assisted vaginal delivery (ventouse, forceps) and episiotomy were risk factors for postpartum urinary retention (18.7 % vs 6.1 %; p = 0.0053; 52.1 % vs 35.7 %; p = 0.0483; respectively). CONCLUSION: Our observations confi rmed the existence of PVRV of 80 ml and more on day 3 in almost 10% of women who had delivered at our clinic. The results of our study prove that instrumental delivery represents a considerable obstetrical-pediatric risk factor for PVRV. Our data support the need of adopting a risk-factor-based approach to PVRV screening as part of postpartum bladder care (Tab. 2, Fig. 1, Ref. 12).
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