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Women are 4-5 times more likely to develop a clot during pregnancy and in the postpartum period than when they are not pregnant. [25] Hypercoagulability in pregnancy likely evolved to protect women from hemorrhage at the time of miscarriage or childbirth. In developing countries, the leading cause of maternal death is still hemorrhage. [25]
One theory is that the pain results from the buildup of chemicals released during physical exertion. The second leading theory is that the pain results from the vasoconstriction of uterine blood vessels in the myometrium; each contraction squeezes the blood vessels, reducing blood flow and causing some hypoxia.
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.
Labor is separated into 4 stages. The first stage involves latent phase and active phase separated by the dilation of the cervix for 6 to 10 cm. The second stage is the pushing stage. The third stage involves the delivery of the placenta. And the last stage is the contraction of the uterus. [22]
First stage of labor starts with the onset of contractions and finishes when the cervix is fully dilated at 10 cm. [15] This stage can further be divided into latent and active labor. The latent phase is defined by cervical dilation of 0 to 6 cm. The active phase is defined by cervical dilation of 6 cm to 10 cm.
The uterus is composed of an interconnected muscle fibers known as the myometrium. The blood vessels that provide the blood supply to the placenta pass through this muscle. [7] After labor it is the contraction of these muscles that physically squeeze the blood vessels so that hemostasis can occur after the delivery of the fetus and the ...
Pain management during childbirth is the partial treatment and a way of reducing any pain that a woman may experience during labor and delivery.The amount of pain a woman feels during labor depends partly on the size and position of her baby, the size of her pelvis, her emotions, the strength of the contractions, and her outlook. [1]
A uterotonic, also known as an oxytocic or ecbolic, is a type of medication used to induce contraction or greater tonicity of the uterus. Uterotonics are used both to induce labor and to reduce postpartum hemorrhage. [1] Labor induction in the third trimester of pregnancy may be