|Factors Affecting Postpartum Overt and Covert Urinary Retention After Vaginal Delivery|
|Shahnaz Barat1, Fatemeh Amirkhanloo3, Azita Ghanbarpour1,2, Karimollah Hajian4, ZinatossadatBouzari5|
|1Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
2Clinical Research Development Unit of Rouhani Hospital, Babol University of Medical Sciences, Babol, Iran
3Student Committee Research, Babol University of Medical Sciences, Babol, Iran
4Department of Biostatistics and Epidemiology, Babol, Iran
5Cellular & Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
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Keywords : Body Mass Index ,Urinary Retention, Women, Pregnancy, Instrumental Delivery, Urinary Symptoms
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Objectives: the present study aimed to investigate the factors affecting postpartum urinary retention after vaginal delivery.
Materials and Methods: This cross-sectional analytical study measured post-void residual (PVR) urine volume by ultrasound at most 15 minutes after the first urination after delivery. Women who had a PVR>150 mL without urinary symptoms were assigned to the postpartum covert urinary retention group. Data was analyzed with SPSS v. 22 software. The Chi-square and Mann-Whitney tests were used for quantitative and qualitative variables, respectively.
Results: In this study, 1120 patients had normal delivery at Ayatollahs Rouhani Hospital during from 21. January 2016 to 20 January 2017. Of them, 306 (29.4%) cases with urinary retention were allocated to the case group and 734 (70.6%) cases without urinary retention were allocated to the control group. The odds of urinary retention in women who had instrumental delivery were 30.19 times as in others (P=0.003). Instrumental delivery is a risk factor for urinary retention. The linear effect of total length of labor was also measured, and revealed every one-minute increase in total length of labor increases the odds of covert urinary retention by 1.008 times (P<0.001).
Conclusions: This study showed that various factors are involved in the incidence of urinary retention. Instrumental delivery, birth weight, gestational age, and other factors can each be a risk factor of urinary retention.
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