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In the absence of a decidua basalis, trophoblast cells on the developing blastocyst form an abnormally deep attachment to the uterine wall, this is known as abnormal placentation. Abnormal placentation can categorised into 3 types, depending on the depth of infiltration of the chorionic villi into the uterine wall: [10]
This is a shortened version of the fifteenth chapter of the ICD-9: Certain Conditions originating in the Perinatal Period. It covers ICD codes 760 to 779. The full chapter can be found on pages 439 to 453 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1.
The underlying causes may include ovulation problems, fibroids, the lining of the uterus growing into the uterine wall, uterine polyps, underlying bleeding problems, side effects from birth control, or cancer. [3] More than one category of causes may apply in an individual case. [3] The first step in work-up is to rule out a tumor or pregnancy.
This is a shortened version of the eleventh chapter of the ICD-9: Complications of Pregnancy, Childbirth, and the Puerperium. It covers ICD codes 630 to 679 . The full chapter can be found on pages 355 to 378 of Volume 1, which contains all (sub)categories of the ICD-9.
Rates of uterine rupture during vaginal birth following one previous C-section, done by the typical technique, are estimated at 0.9%. [1] Rates are greater among those who have had multiple prior C-sections or an atypical type of C-section. [1] In those who do have uterine scarring, the risk during a vaginal birth is about 1 per 12,000. [1]
This can lead to fetal malformations [2] [24] and low birth weight. [2] [6] [10] The umbilical vessels may also be longer compared to normal, [2] particularly when the site of velamentous cord insertion is in the lower uterine section as the extension of the uterine isthmus as pregnancy advances causes vessel elongation. [3]
During an individual's menstrual cycle, the endometrium thickens in preparation for potential pregnancy. After ovulation, if the ovum is not fertilized and there is no pregnancy, the built-up uterine tissue is not needed and thus shed. Prostaglandins and leukotrienes are released during menstruation, due to the build up of omega-6 fatty acids.
Close observation of the baby by a neonatologist after birth is recommended. If resolution of the cystic hygroma does not occur before birth, a pediatric surgeon should be consulted. [10] Cystic hygromas that develop in the third trimester, after 30 weeks' gestation, or in the postnatal period are usually not associated with chromosome ...