obstetrics summary Flashcards
preconcepton care
diet - folate
weight - BMI
exercise
smoking/alcohol advice - assess intake and provide advice
pregnancy history - screen for modifyable risk factors
genetic screening - if indicated from personal/family history
medical history
pychosocial screening - DV and mental health screen
environmental screening - work, home
contraception/family planning
infectious screen and vaccinations
breast exmination
first antenatal visit
planned vs. unplanned
LMP and tests to date
obstetric history
gynaecological history
medical history (personal and family)
social history
care options
provide pregnancy health record
antenatal examination
height/weight (BMI)
BP
urinalysis
cardio exam
abdominal examination - fundal height, palpation for lie/presentation (from 28 weeks), FHR auscultation
initial investigations
MSU
rubella
syphilis
antibodies
blood group
chlamydia/gonorhhea
FBC
globinopathies
HIV/HBV/HCV
iron sstudies and immunications
subsequent investigations following antenatal visit
US:
dating - 8-12 weeks
first timester screen 11-14 weeks
anatomy scan 18-20 weeks
OGTT 24-28 weeks
GBS screen 36 weeks
screening test
combined first trimester screening test
non-invasive prenatal testing
triple test
if any are poitive > CVS vs. amniocentesis
rhesus D negative
mother with rhesus negative and foetus with resus positive
risk of maternofoetal haemorrhage
RhD Ig binds Rh positive foetal cells to prevent immune response
preterm labour and birth complications
birth after 20 weeks and before 37 weeks gestation
complications:
- mother - increased risk of obstetic intervention
- neonate - ICH, respiratory support, bowel necrosis, sepsis, death
- child - CP, chronic lung disease, deafness, blindness, developmental delay
- adult - metabolic syndrome, diabetes, heart disease
risk factors for preterm birth
previous pre-term birth, FHx, smoking, extremes of age, stress/anxiety, previous preinatal loss, short cervical length
aetiologies of pre-term birth
spontaneous preterm labour, PPROM, preeclampsia, diabetes, APH, multiple pregnancies, infectons, uterine abnormalities, cervical surgeries
prevention of pre-term birth
optimal control of risk factors (smoking cessation)
measure cervical length ot foetal anatomy + subsequent scans
vaginal progesterone is history of spontenous preterm birth
what to do for short cerrvical length
200mg vagnal progesterone in evening if cervix <25mm
consider cervical cerclage is cervix <10mm
vaginal progesterone is history of spontaneous preterm birth
workup of preterm labour
diagnosis - regular painful contractions and cervical change
history - gestational age, contractions, presence of fluid
examination - temperature, abdominal exmiantion, sterile speculum
investigations in preterm laabour
fFN - foetal fibronectin
MSU
HVS
USS
EFM
management of preterm labour
admit - offer analgesia, baselne investigatons, CTG
tocolysis - <34 weeks gestations nifedpine, IV salbutamol, GTN patch
corticosteroids - 2 doses 11.4mg IM metamethasone 24 hours apart
MgSO4 - foetal neuroprotection in women <30 weeks gestation
antibiotics - ntrapartum benzylpenicillin for GBS prophylaxis
breech ppresentation
c-secton reduced rissk of short tern maternal and foetal complications
risk factors for breech presentation
nullipparity, previous breech, uterine and plecntal abnormalitiess, poly/oligohydramnios, multiple pregnancies, grand multiprity
foetal - extended legs, short umbilical cord, early gestation, foetal abnormality, IUGR
PROM
premature rupture of membranes before labour begins
history - tme, type and colour of fluid, presence of signs indicative of infection (odour, abdominal pain, fever, dysuria, discharge)
exmination and investgations for PROM
examinations - vitals, abdominal examination, sterile speculum
investigations - bloods (FBC, UEC, CRP), MSU LVS, ECS, STI screen, amnicator, USS exmaination
PPROM management
admit and observe - CTG
oral erythromycin
remove cervical cerclage
discharge if >72 hours with no evidence of infection/preterm labour with approprate education
when to do IOL in PPROM
signs of chorioamnionitis/maternal sepsis or foetal compromise