Disorders of early pregnancy Flashcards
when is a heartbeat established with an early pregnancy
22 days
what is defined as a spontaneous miscarriage
fetus delivers or dies <24 weeks old
when does spontaneous miscarriage normally occur
<12 weeks
what is the cause of >60% of spontaneous miscarriages?
isolated chromosomal defects
how does a spontaneous miscarriage usually present
bleeding
pain
during a suspected spontaneous miscarriage, how does bHCG levels help inform diagnosis
in a viable pregnancy bHCG levels increase by >65%, whereas in a non-viable pregnancy they decrease >50%
anywhere inbetween suggests an ectopic
molar pregnancy will show >100,000 IU (dramatically raised)
what should happen if someone presents with spontaneous miscarriage symptoms + fever
swabs + Abx
what is useful in a spontaneous miscarriage of a non-viable foetus
IM ergometrine as it prevents bleeding by contracting the uterus
when should rhesus -ve women be given anti D in the context of a spontaneous miscarriage
if there has been bleeding >12 weeks or if medical/surgical treatment has been performed
what are the types of spontaneous miscarriage
threatened miscarriage inevitable miscarriage complete miscarriage incomplete miscarriage septic miscarriage missed miscarriage
what are features of threatened miscarriage
there is bleeding but the foetus is alive
cervical os is closed
uterus is of the expected size
what % of threatened miscarriages go on to miscarry
25%
what are the features of an inevitable miscarriage
heavy bleeding
foetus may still be alive
cervical os is open
what are the features of an incomplete miscarriage
some foetal parts have already passed
os is open
what are the features of a complete miscarriage
all foetal parts have been passed
bleeding has diminished
uterus is no longer enlarged
cervical os closed
what are features of septic miscarriage
contents of the uterus causing endometritis
offensive vaginal discharge
tender uterus
not necessarily feverish
what features make you think a septic miscarriage has caused a pelvic infection
peritonism
abdominal pain
what are the features of a missed miscarriage
foetus died in utero with no symptoms
not noticed until bleeding/USS
uterus smaller than expected
os is closed
how should you manage a non-viable intrauterine pregnancy
expectant management: watch and wait
medical management: vaginal/oral misoprostol
surgical: evacuation of retained products of conception , essentially vacuuming the non-viable pregnancy out under GA
what are complications of surgical management of a non-viable intrauterine pregnancy (ERPC)
Excessive vaginal bleeding may occur with expectant or medical management – may require surgical intervention (10-40%)
Infection (3%) - similar across all managements
Surgical management may remove some endometrium causing Asherman’s syndrome (excessive scarring in the uterus causing adhesions/the walls to stick to each other)
Surgical management may also perforate the uterus (<1%)