الفهرس 
Physiology of LaborOnly 14 pages are availabe for public view
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Abstract
Background: Cervical ripening is a complex process involving extensive remodeling and dynamic anatomic and physiologic alternations governed by hormonal changes, inflammatory responses, vasodilatory changes, and other biological processes. Prostaglandins, produced both locally in the cervix and uterus as well as originating from the fetal membranes, play a critical role in cervical ripening and uterine contractility by increasing inflammatory mediators in the cervix and inducing cervical remodeling.
Objective: To assess the adjunctive Role of intravaginal administration of Isosorbide dinitrate in induction of labor.
Patients and Methods: This randomized controlled clinical trial was conducted at tertiary care hospital at Ain Shams University Maternity hospital (labor ward) and was randomly selected from full term patients attending the labor ward and scheduled for induction of labor.
Results: Our results revealed that the need to cesarean section was statistically significantly less frequent among Isosorbide dinitrate group. Our results revealed that the duration of induction to active phase interval and the duration of active stage of labor were significantly shorter among Isosorbide dinitrate group than among Control group.
Conclusion: As evident from the current study, both intravaginal misoprostol and combination of vaginal Isosorbide dinitrate and misoprostol are safe and effective modes of labor induction. Vaginal isosorbide dinitrate and misoprostol is more effective than misoprostol alone in terms of post induction Bishop Score, shorter induction to active phase interval and induction to delivery interval. Thus, the combined use of vaginal isosorbide dinitrate with misoprostol for preinduction cervical ripening at term may prove to be a major therapeutic advance