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| Analysis on the characteristics of labor duration of primiparas with premature |
| Maternity Hospital Affiliated to Nanjing Medical University (Nanjing Maternal and Child Health Care Hospital), Nanjing, Jiangsu Province, 210000 |
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Abstract To analyze the characteristics of labor duration of primiparas with premature. Methods: The clinical data of 90 primiparas with premature who had been hospitalized and delivered (28-36+6 gestational weeks) in observation group were collected retrospectively. 90 primiparas with full term were selected in control group during the same period. The starting point of the active stage of labor, the duration of the active stage, the dilatation speed of orifice of the uterus, and the duration of labor process of the primiparas in the two groups were recorded. The difference of the duration of labor process of the primiparas was compared among the primiparas with different gestational weeks in the observation group. Results: The proportion (33.3%) of the active start ≤2cm of the primiparas in the observation group was significantly higher than that (7.8%) of the primiparas in the control group, and the proportion of the active start ≥5cm (16.7%) of the primiparas in the observation group was significantly lower than that (38.9%) of the primiparas in the control group. The duration of the first stage of labor (5.80±2.15 h), the duration of the second stage of labor (29.70±15.83 min) and the duration of the active stage (3.36±0.97 h) of the primiparas in the observation group were significantly shorter than those (6.84±4.63 h, 34.43±16.27 min, and 4.52±0.76 h) of the primiparas in the control group. The dilatation speed of the uterine orifice (6.80±1.33 cm/h) of the primiparas in the observation group was significantly faster than that (5.24±1.65 cm/h) of the uterine in the control group. The duration of the third stage of labor (7.44±2.87 min) of the primiparas in the observation group was significantly longer than that (6.95±3.30 min) of the uterine in the control group (all P＜0.05). In the observation group, the duration of the first stage of labor, the second stage of labor, and the active period had prolonged with the increase of the gestational weeks of the primiparas, while the dilatation speed of the uterine orifice had slowed down with the increase of the gestational weeks of the primiparas. The duration of the first stage of labor, the second stage of labor, or the active period of the primiparas with premature rupture of membranes was significantly shorter than that of the primiparas without premature rupture of membranes. The dilatation speed of the uterine orifice of the primiparas with premature rupture of membranes was significantly faster than that of the primiparas without premature rupture of membranes. The incidences of postpartum hemorrhage (11.8%), neonatal asphyxia (11.8%), and neonatal respiratory distress syndrome (17.7%) of the primiparas with prolonged labor were significantly higher than those (0, 0, and 1.6%) of the primiparas with normal labor (all P＜0.05). Conclusion: The primiparas with premature delivery have the characteristics of early entry into the active period, shorter duration of the first and the second stages of labor, and longer duration of the third stage of labor. The risks of adverse outcomes of mothers and infants of the primiparas with premature delivery increase due to the longer overall duration of labor. It is not suitable to strictly apply the labor process standard in clinical labor process monitoring of the primiparas with premature delivery, but should be handled flexibly according to the characteristics of labor process duration of the primiparas with premature delivery.
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