Abortion – clinical classification, causes, diagnosis and treatment Flashcards
(44 cards)
define abortion
Spontaneous or induced expulsion of the products of conception from the uterus before 20 weeks
gestation or if fetal weight is <500g
when is an abortion early
before 12 wks
when is abortion late
after 12 wks
factors causing abortionn
maternal
foetal
placental
Idiopathic
maternal factors
Maternal infections
-human immunodeficiency virus, Chlamydia, Toxoplasmosis
Trauma
Endocrine causes
- progesterone deficiency=> can’t maintain preg
- DM
- hyperthyroidism
Drugs
Environmental causes
Immunological causes:
Ageing sperm or ovum.
Uterine defects
- Septum, Asherman’s syndrome (intrauterine adhesions).
Nervous and psychological conditions.
Foetal factors
Chromosomal abnormalities: cause at least 50% of early abortions e.g.
trisomy. Blighted ovum (gestational sac w/o an embryo).
Faulty implantation of the fertilized ovum
Failure of the endometrium to accept the fertilized ovum
Placental factors
Placental abruption
Placental praevia
history in dg of abortion
- Amenorrhea (preg)
- Abdominal pain
- Vaginal bleeding
- Expulsion of products of gestation
Clinical classification of abortion
Induced abortion
Spontaneous abortion
Septic abortion
types of
Spontaneous abortion
Threatened abortion Inevitable abortion Incomplete abortion Complete abortion Missed abortion Habitual abortion
pain in threatened abortion
slight / or absent pain
internal os in threatened abortion
Cervix closed
US in threatened abortion
Living foetus
Clinical picture in inevitable abortion
Excessive vaginal bleeding
Accompanied w/ clots
Rupture of membranes
btwn 12-20 weeks
Clinical picture in Threatened
abortion
Vaginal spotting
Pain in inevitable abortion
Pain in
suprapubic region radiating to
the back
Internal os in inevitable abortion
Cervix is dilated
and products of
conception may
be felt
clinical picture in incomplete
Continuous bleeding
Uterus large in size
internal os Incomplete abortion
Cervix is opened
Incomplete abortion US
Retained contents
clinical picture in complete abortion
Bleeding slight
Uterus large in size
pain in complete abortion
Ceases
internal os in complete abortion
Empty cavity
clinical pic in missed abortion
Regression of pregnancy
symptoms
Foetal movements not felt
Dark brown vaginal
discharge
Uterus fails to grow