Uterine muscle contraction is dependent on external Ca2+ and Ca2+ release from cytoplasmic storage sites. In this study, the mechanism of Ca2+ mobilization in uterine muscle cells by glycoside, dalsaxini, isolated from the root of D. Saxatilis was investigated in the rat. Uterine muscle contractility stimulated by dalsaxin was concentration dependent (ED50 0.13 mg/ml) and was significantly atte...

PURPOSE Postpartum uterine contraction pain is a common phenomenon after Cesarean delivery. We investigated the effectiveness of tenoxicam in reducing uterine contraction pain. METHODS We enrolled 120 consecutive non-breastfeeding women who were scheduled for elective Cesarean delivery. After the administration of spinal anesthesia with bupivacaine and intrathecal morphine 0.15 mg injection, ...

BACKGROUND The effects of epidural anaesthesia on maternal uteroplacental blood flow in the presence of uterine contractions remain unclear. The aim of our study was to evaluate the effects of epidural analgesia with bolus doses on uterine artery pulsatility index (UtA-PI) during labour. METHODS In a prospective case-control study, UtA-PI was measured during uterine contraction and relaxation...

Building a training system for medical personnel to properly interpret fetal heart rate tracing requires developing accurate models that can relate various signal patterns to certain pathologies. In addition to modeling the fetal heart rate signal itself, the change of uterine pressure that bears strong relation to fetal heart rate and provides indications of maternal and fetal status should al...

The polychlorinated biphenyl (PCB) mixture Aroclor 1242 (A1242) increases frequency of contractions of pregnant rat uteri, suggesting a possible mechanism for decreased gestational age and increased spontaneous abortion in women and animals exposed to PCBs. In the present study, we hypothesized that A1242-induced stimulation of uterine contraction is mediated by arachidonic acid released by pho...

OBJECTIVE The purpose of this study was to investigate the spatiotemporal patterns of uterine electrical activity in normal and arrested labors. STUDY DESIGN From a database of electrohysterograms, 12 subjects who underwent cesarean delivery for active-phase arrest were each matched with 2 vaginally delivered controls. Using 30-minute segments of the electrohysterogram during the arrest, or t...

background: citrus aurantium is a small citrus tree, with scented white flowers. the c. aurantium is used in asian herbal medicine primarily to treat digestive problems. objective: the goal of this study is to investigate the effect of c. aurantium flower's aqueous extract on uterine contraction in presence of some known uterus stimulants. materials and methods: in experimental study 30 virgin ...

Measurement of uterine contraction frequency has been employed as a screening test to identify women with increased risk of preterm birth, and as an aid in the early diagnosis of preterm labor. The National Institute of Child Health and Human Development Maternal-Fetal Medicine Units (NICHD MFMU) Network performed a prospective, blinded observational study of uterine contraction frequency to de...