Relationship between Length of Delivery Stages and Mode of Delivery for Nulliparous Women in Labor in Two Groups of Physiological and Traditional Delivery

Document Type : Original Article


1 Lecturer of Midwifery, School of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran.

2 M.Sc. of Midwifery, School of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran.

3 Assistant Professor, Department of Physiology, Women's Fertility Health Research Center, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.


Introduction: If delivery stages become long, it leads to delivery harmful outcomes including increased rate of cesarean delivery, neonate's admission in NICU, postpartum infection, and increased economic impose on people and society. This study was performed to evaluate the relationship between length of delivery stages and mode of delivery in nulliparous women in two groups of physiological and traditional delivery.
Methods: This clinical blind study was performed on 370 nulliparous mothers at Talesh Shahid Noorani hospital during 2011-2012. People were randomly divided into two groups (185 member) of Physiological and Traditional Delivery. The required information was collected through observations of delivery stages, interviewing with mothers and studying the contents of their files. Data collection tool was a checklist including the characteristics of subjects, partograph form, assessment of first, second, and third stages of delivery. Data analysis was performed by SPSS software (version 13) and Chi-square, and t tests. PResults: Two groups were significantly different in terms of length of the first and the second stages of delivery (P<0.001). Length of the first and the second stages of delivery was longer in physiologic delivery group (421.23±123.48) than traditional delivery group (243.45±131.28) (P<0.001). But, length of the third stage did not show a statistically significant difference between two groups (P=0.72). In traditional delivery group, the rate of vaginal delivery with episiotomy (%44.9) and cesarean section (%35.1) was higher than vaginal delivery with episiotomy (%18.9) and cesarean section (%11.4) in physiologic delivery group (P<0.001). Vaginal delivery without episiotomy was higher in traditional delivery group (%69.7) than physiologic delivery group (%20) that two groups had statistically significant difference (P<0.001).
Conclusion: Unlike Traditional delivery, with increasing the length of delivery, the rate of cesarean delivery decreased and vaginal delivery increased.


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