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Uterine hyperstimulation or hypertonic uterine dysfunction is a potential complication of labor induction. This is displayed as Uterine tachysystole - the contraction frequency numbering more than five in a 10-minute time frame or as contractions exceeding more than two minutes in duration. [ 1 ]
Ladin's sign is a clinical sign of pregnancy in which there is softening in the midline of the uterus anteriorly at the junction of the uterus and cervix. It occurs and is detectable with a manual examination at about 6 weeks' gestation. [1] Ladin's sign is often present during the woman's first pelvic exam when pregnancy is suspected. [2]
Uterine Tachysystole is a condition of excessively frequent uterine contractions during pregnancy. [1] It is most often seen in induced or augmented labor, though it can also occur during spontaneous labor, [2] and this may result in fetal hypoxia and acidosis. This may have serious effects on both the mother and the fetus including ...
PGE 2 is a common pharmacological method of termination of pregnancy, particularly in the second trimester or for missed abortion, which is a miscarriage in which the fetus did not evacuate the uterus. [7] [28] [29] However, PGE 2 is not feticidal, and only induces abortion by stimulating uterine contractions. [4]
Signs and symptoms of preterm labor include four or more uterine contractions in one hour. In contrast to false labour, true labor is accompanied by cervical dilation and effacement. Also, vaginal bleeding in the third trimester, heavy pressure in the pelvis, or abdominal or back pain could be indicators that a preterm birth is about to occur.
Throughout pregnancy, the uterus experiences motor denervation, thus inhibiting spontaneous contractions. The remaining contractions are predominantly hormonally controlled. The decrease in the coordination of uterine smooth muscles cells reduces the effectiveness of contractions, causing the uterus to enter a state of uterine quiescence. [ 8 ]
When oxytocin binds to its associated receptors in the uterus, a cascade is initiated that results in an increase in calcium and subsequently an increase in muscle contractions. The release of oxytocin helps to facilitate stronger contractions during labor to aid in delivery of the fetus. Additionally, during pregnancy, the uterine muscles have ...
Regular contractions occurring less than 10 minutes apart and progressive cervical dilation or cervical effacement. [36] At least three painful regular uterine contractions during a 10-minute period, each lasting more than 45 seconds. [37] Many women are known to experience what has been termed the "nesting instinct".