ABORTION Flashcards
Abortion
Spontaneous or induced termination of pregnancy before fetal viability
Abortion
pregnancy termination before 20 weeks’ gestation
OR
fetus born weighing < 500 g
Spontaneous Abortion
threatened inevitable incomplete complete missed abortion
> 80 % of spontaneous abortions occur within the
first 12 weeks
No identifiable embryonic elements
anembryonic miscarriage
Often display a developmental abnormality of the embryo, fetus, yolk sac, and, at times, the placenta
embryonic miscarriages
75 % of chromosomally abnormal abortions occurred by
8 weeks’ gestation
Most frequently identified chromosomal anomaly in the 1st trimester
Autosomal Trisomy
trisomies of chromosomes 13, 16, 18, 21 , and 22 - most common
Single most frequent specific chromosomal abnormality
Monosomy X (45,X) (Turner Syndrome)
Associated with hydropic or molar pregnancy
Triploidy
Presumed when bloody vaginal discharge or bleeding appears through a closed cervical os during the first 20 weeks
Threatened Abortion
The most predictive risk factor for pregnancy loss
Bleeding
serum progesterone concentrations that suggest a dying pregnancy
< 5 ng/mL
Used to locate the pregnancy and determine viability
Transvaginal sonography
Bleeding that follows partial or complete placental separation and dilation of the cervical os
Incomplete Abortion
History of heavy bleeding, cramping, and passage of tissue or a fetus
During examination – closed cervical os
Complete Abortion
Describes dead products of conception that were retained for days, weeks, or even months in the uterus with a closed cervical os
Missed Abortion