gynae 3 Flashcards
(46 cards)
Disorders of early pregnancy are?
Spontaneous Abortion
Ectopic Pregnancy
Define spontaneous abortion?
Loss of pregnancy before 20 weeks without outside intervention
Causes of spontaneous abortion?
- Uterine Defects: Fiboids, Polyps
- Endocrine Factors
- Systemic Disorders: HTN, Diabetes
- Fetal Chromosomal Anomalies
- Infection - TORCH
When can chromosomal analysis be done for a patient?
- Habitual or recurrent abortions - loss of 3 or more pre-viable pregnancies
- Malformed fetus
Predisposing factors for ectopic pregnancy?
- Chronic salpingitis (gonococcal)
- Peritubal adhesions (appendicitis)
- Leiomyomas
- Previous Surgery
- Benign cysts and tumours of tube
Can fallopian tubes look normal and still give ectopic pregnancy?
yes
Complications of ectopic pregnancy?
- Rupture
- Hemorhhage
- hematosalpinx
- hemoperitoneum - Spontaneous regression of pregnancy
- Tubal Abortion
Clinical features of ectopic pregnancy?
- amenorrhea 6-8w
- abdominal pain
- vaginal bleeding
- hemorrhagic shock
Histological features of ectopic pregnancy?
Walls of fallopian tube have placenta-like tissue with chorionic villi
sometimes can see the primitive embryo
3 disorders of late pregnancy?
- Placental inflammation
- Toxemias of pregnancy
- Placental Abnormalities
What types of placental inflammations can one get?
- Placenta - villitis
- Membranes - chorioamionitis
- Umbilical cord - funisitis
How can placental inflammation be acquired?
- Ascending infections through birth canal
- Hematogenous - TORCH
Types of placental infections?
Syphilis
Chlamydia
Strep
Listeriosis
Rubella
CMV
Toxoplasmosis
Consequences of antenatal infections?
IUGR, low birth weight, premature delivery
Congenital anomalies
deafness
Symptoms of preeclampsia?
HTN
Proteinuria
Edema
Symptoms of Eclampsia?
Convulsion
DIC
What is the pathogenesis of eclampsia?
Unknown cause causing altered placentation and then organic or functional obstruction of spiral arterioles
endothelial dysfunction, vasoconstriction, increased vascular permeability
How does toxemia of pregnancy present in
a) liver
b) kidney
c) brain
d) placenta
a) subcapsular, intraparenchymal hemorrhages
b) glomeruli shows marked swelling of endothelial cells and fibrin thrombi
c) gross or microscopic foci of hemorrhage along with small-vessel thromboses
d) Infarcts, hematomas, fibrinoid necrosis of vessels
3 placental abnormalities?
placenta previa - abnormal localisation of placenta implantation site
abruptio placentae - premature incomplete of normally positioned placenta fro, uterine wall during pregnancy or before delivery
placenta accreta - abnormal adhesion of normally placed placental villi to uterine wall due to absence of decidual plate between villi and myometrium
Consequence of placenta previa? Complication?
implantation of placenta over or near the internal os, necessitating delivery of placenta before fetus via C-sect
Antepartum hemorrhage
Consequences of abruptio placentae
Bleeding can be concealed or revealed
Severe bleeding - shock, DIV
Severe fetal distress - death
consequence and complication of placenta accreta. treatment?
failure of placenta to separate in 3rd stage of labour
severe post partum hemorrhage - shock
hysterectomy
what are gestational trophoblastic diseases?
to describe closely related condiotions characterised by active abnormal proliferation of trophoblastic cells
- hydatiform mole - partial & complete
- invasive mole
- choriocarcinoma
what is the function of the trophoblast?
outermost layer of cells of the blastocyst that attaches the fertilised ovum to the iterine wall, serving as a nutritive pathway for the embryo