![]() ![]() The following clinical characteristics and outcomes were analyzed: parity maternal age gestational age birth weight maternal complications such as hypertensive diseases, glucose intolerance placental abruption oxytocin use delivery modes neonatal Apgar score at 1 and 5 min umbilical artery pH postpartum hemorrhage requiring hemotransfusion perineal tears (severe perineal laceration: perineal laceration either third- or fourth-degree laceration) and cervical tears. ![]() Data were collected from the patients’ charts that consist of information collected directly after delivery by the midwives who examine the information routinely before entering it into the database. In our hospital, oxytocin has not been used in the routine for prevention of postpartum hemorrhage in cases of precipitous labor. Deliveries in this study occurred between the years 20 in the Japanese Red Cross Katsushika Maternity Hospital, one of main Perinatal Centers in Tokyo, Japan. Labor of normal duration is defined as expulsion of the fetus with 3 - 30 h after commencement of regular contractions in nulliparous women and 3 - 15 h after commencement of regular contractions in parous women, while prolonged labor is defined as expulsion of the fetus more than 30 h after commencement of regular contractions in nulliparous women and more than 15 h after commencement of regular contractions in parous women. ![]() In this study, therefore, we retrospectively examined our cases of precipitous labor to identify the clinical significance and perinatal outcome following precipitous labor.Ī retrospective population-based study was conducted comparing women with singleton precipitous labor and those with labor of normal duration. In their study, there were only nine nulliparous women (9.1% of all precipitous delivery) with precipitous delivery. For example, in an earlier study with 99 precipitous labors at term by Mahon et al, precipitous labor occurred mostly in multiparous women. ![]() However, limited information exists on maternal and perinatal outcome after precipitous labor, especially in nulliparous women. In addition, precipitous labor has been observed to be associated with the higher rate of placental abruption. Postpartum hemorrhage associated with uterine atony following short labor in multiparous women seems to be experienced often in the clinical setting. For example, the uterus that contracts with unusual vigor before labor may be likely to be hypotonic after delivery, with hemorrhage from the placental implantation as the consequence. The prevailing opinion has been that too rapid a labor can result in maternal injury and place the fetus at risk for traumatic or asphyxia insults. It has been supposed to result from an abnormally low resistance of the soft pass of birth canal, from abnormally strong uterine and abdominal contractions, or rarely from the absence of painful sensations. It is defined as expulsion of the fetus within less than 3 h of commencement of regular contractions. Precipitous labor is extremely rapid labor and delivery. Not only can labor be too slow, but it also can be abnormally rapid. ![]()
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