Uterine contractions were monitored in 54 patients in whom severe abruptio placentae had caused intra-uterine death of the fetus. The frequency at the beginning of monitoring ranged from 2 to 14 contractions in 10 minutes, with a mean of 8,4. Only 4 patients had 4 or fewer contractions in the first 10 minutes of monitoring. No change in contraction frequency was observed during the course of la...

Al&met-The effects of epinephrine. norepinephriie, and isoproterenol on uterine phosphorylase were studied in intact, anesthetized rats. All three agents were found to increase uterine phosphorylase a activity when administered in large doses by intraperitoneal injection. Total phosphorylase activity was unaffected. The time course for the effects of epinephrine on uterine phosphorylase activit...

Uterine contractions occur in runs of 1-3/hr throughout pregnancy from early in the second trimester until full term usually without consequence. Regular uterine contractions are essential in every case of preterm labor (PTL) resulting in preterm delivery at <37 weeks. It has been demonstrated that women are unable to accurately perceive the contractions associated with preterm labor while uter...

OBJECTIVE The purpose of this study was to evaluate the effect of prophylactic vaginal progesterone in decreasing preterm birth rate in a high-risk population. STUDY DESIGN A randomized, double-blind, placebo-controlled study included 142 high-risk singleton pregnancies. Progesterone (100 mg) or placebo was administered daily by vaginal suppository and all patients underwent uterine contracti...

STUDY QUESTION What is the effect of uterine peristalsis on fluid migration after mock embryo transfer? SUMMARY ANSWER Uterine peristaltic wave frequency was positively correlated with the distance that fluid moved after it was deposited in the uterine cavity. WHAT IS KNOWN ALREADY Embryos have been found outside the uterine cavity after embryo transfer. It has been suggested that uterine c...

This study was designed to observe the effects of i.v. fluid infusion on uterine activity during normal labour in women receiving an extradural block. Thirty-four women in spontaneous labour at term gestation were allocated randomly and prospectively to one of three i.v. pre-extradural fluid load groups: group A, no fluid load; group B, normal saline 500 ml; and group C, normal saline 1000 ml. ...

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...

Crude papaya latex (CPL) and its proteinases, papain (PPN) and chymopapain (CPN). are strong uterine eontractants. The current study was carried out to examine possible mechanisms of the uterine stimulating activity of the proteinases. Inaetivation of the enzymatic activity of papaya proteinases reversibly abolished their uterinestimulating effect, suggesting that enzymatic activity of the prot...

Uterine luminal protein collected on d 17 (estrus = d 0) from Angus (n = 20) and Brahman (n = 19) cows of varying reproductive status was evaluated for immunosuppressive activity in vitro. Reproductive status consisted of the following categories: nonpregnant (uterine flushing was devoid of embryonic material); remnant (uterine flushing contained obvious degenerative fragments of embryonic tiss...