Obstetrics and Gynecology International / 2018 / Article / Tab 3

Research Article

Acceptable Postvoid Residual Urine Volume after Vaginal Delivery and Its Association with Various Obstetric Parameters

Table 3

Obstetrics parameters between study group and control group.

CharacteristicsTotal RU ≥ 150 ml RU < 150 ml

Primiparity, n (%)55 (35.5)10 (83.3)45 (31.5)0.001
Gestational age at delivery39.2 (38.1, 40.0)39.2 (38.1, 40.0)39.2 (38.1, 40.0)0.727
Duration of active phase of labour, minutes150 (75, 240)375 (152, 525)135 (60, 240)0.001
Duration of second stage, minutes9 (5,18)30 (9.5, 53.8)8 (5, 17)0.007
Oxytocin augmentation, n (%)50 (32.3)6 (50.0)44 (30.8)0.203
Duration of oxytocin augmentation, hours3.5 (1.5, 6.0)5.5 (2.9, 6.8)3.2 (1.5, 5.9)0.142
Epidural analgesia, n (%)17 (11.0)5 (41.7)12 (8.4)0.004
Duration of epidural analgesia, hours5.0 (3.7, 7.0)5.0 (4.5, 7.3)5.5 (2.4, 7.0)0.422
Episiotomy, n (%)74 (47.7)12 (100)62 (43.4)<0.001
Instrumental delivery17 (11.0)5 (41.7)12 (8.4)0.004
Type of instrumental delivery, n (%)
(1) Vacuum16 (94.1)4 (80.0)12 (100.0)0.294
(2) Forceps1 (5.9)1 (20.0)0
Birth weight, grams3060 (2800, 3270)3170 (3030, 3357)3050 (2770, 3270)0.098
Estimated blood loss, ml300 (200, 300)300 (300, 300)300 (200, 300)0.017
Perineal pain score2.0 (1.0, 3.0)3.5 (3.0, 5.8)2 (1.0, 3,0)<0.001

All expressed in median (quartile) unless specified.