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A contraction stress test (CST) is performed near the end of pregnancy (34 weeks' gestation) to determine how well the fetus will cope with the contractions of childbirth. The aim is to induce contractions and monitor the fetus to check for heart rate abnormalities using a cardiotocograph .
Uterine contractions are muscle contractions of the uterine smooth muscle that can occur at various intensities in both the non-pregnant and pregnant uterine state. The non-pregnant uterus undergoes small, spontaneous contractions in addition to stronger, coordinated contractions during the menstrual cycle and orgasm.
Braxton Hicks contractions, also known as practice contractions or false labor, are sporadic uterine contractions that may start around six weeks into a pregnancy. [1] However, they are usually felt in the second or third trimester of pregnancy .
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.
The increased occurrence of gallstones during pregnancy is due to inhibition of gallbladder contraction (as result of increased smooth muscle relaxation mediated by progesterone) and reduced biliary transportation of bile (mediated by estrogen) which results in cholestasis of pregnancy. [36]
The term is used to describe a cluster of physical changes that may take place in a pregnant woman before she goes into "real" labor, such as an increase in blood volume (sometimes resulting in edema), Braxton Hicks contractions, the presence of colostrum in the breasts, and the dislodging of the mucus plug that has sealed the cervix during the ...
This leads to more intense contractions, and causes pain in the lower back that persists between contractions as the fetus’ occiput exerts pressure on the mother's sacrum. [24] Another prominent sign of labour is the rupture of membranes, commonly known as "water breaking". During pregnancy, a baby is surrounded and cushioned by a fluid ...
Methylergonovine: This is an ergot alkaloid and has multiple mechanisms of action to induce fast, regular uterine contractions which leads to sustained uterine contraction. [24] It can cause peripheral vasoconstriction and is contraindicated in patients with hypertension or pregnancy related hypertension. [25]