O+G Flashcards
normal fundal height and major week milestones
gestational age +/- 2cm
12 weeks - pubic symphysis
20 weeks - umbilicus
36 weeks - xiphisternum
pre-eclampsia important symptoms
blurred vision or flashing lights (due to local vasospasm of the retina) severe epigastric pain hyperreflexia clonus oedema of hands, feet, face severe headache - usually frontal fetal distress- reduced fetal movements vomiting confusion / altered mental status
when do you feel fetal movements
16-25 weeks - will increase until 32 weeks and then plateu
cut off to investigate is 24 weeks
amount of vitamin D in pregnancy
400 IU daily
appointment timing
booking - 8-12 weeks - detailed history, risk assessment (community or midwife), estimation of due date but most accurate is at dating scan with CRL, heigh, weight, BMI, urine dip for asympomatic bacteriuria, bloods (anaemia, HIV, syphilis, hepB, group and save for Rh)
dating - 8-14 weeks - determines age based on CRL, detects if twins, DS (via nuchal translucency, PAPP-a, beta hCG)
anomaly - 18-20 - take pic home, gender, major structural malformations
how is DS confirmed
CVS at 11-14 weeks - 2% risk of miscarriage
amniocentesisis at 15 weeks - 1% risk of miscarriage
give anti-D in both
TOP methods
Most women have some bleeding and cramping for several days after either
method, but these usually get better day by day
surgical can be doen under LA or LA and sedation or GA - benefit w LA is going home same day and dont have to fast
wont be able to drive following sedation
beforehand - may be offered sti testing, an US to check how many weeks, chance to speak to counsellor
medical - up to 24w
mifepristone pill then 24-48 hours later misoprostol (vaginal/buccal/sublingual) - dose and amount of pills depends on how far along - e.g. <9 weeks only need one bill, 9-12 need vaginal + up to 4 doses oral
pregnancy comes out via bleeding several hours after the 2nd pill. someimtes need to take extra dose of misoprostol to get it to pass
if >10w pregnany you may need to take the second tablet at hospital
surgical
vacuum aspiration up to 14w
dilation and evacuation 14-24 w under sedation or GA
done w LA, sedation or GA/deep sedation - w both can go home say day
In very limited circumstances an abortion can take place after 24 weeks – for example, if there’s a risk to life or there are problems with the baby’s development
saftey netting = get advise if pain or bleeding that does not get better in a few days - have a temp or unusual vag discharge
comps inc needing another procedure, heavy bleeding or sepsis, injury to womb
what is needed alongside a TOP
anti-d prophylaxis for Rh negative after 10w gestation in every sort of TOP
consider for before 10 weeks for surgical TOP
for those that need thrombophrophylaxis, consider LMWH for at least a week after the abortion
NSAIDs for pain relief for either
use pads until bleeding stops
who needs to take aspirin from 12w of pregnancy
>1 of - First pregnancy - Aged >40 - Previous pregnancy >10 years ago - BMI >35 - Family history of pre-eclampsia - Multiple pregnancy Or 1 of - Hypertension or pre-eclampsia in a past pregnancy - CKD - Autoimmune disease e.g. SLE - Diabetes mellitus - Chronic hypertension
diabetes monitoring (with target values) and checkups in pregnancy
seen every 1-2 weeks by diabetes care team
type 1 and type 2 on insulin - test glucose pre-meal, one hour post meals and bedtime
type 2 on oral or conservative - same but not bedtime
target = fasting 5.3, two hours after meal 6.4 (7.8 one hour after)
timing of birth in diabetes
elective birth by induction of labour or C section if indicated between 37-38+6 weeks of pregnancy
screening for gestational diabetes + its risk factors
75g oral glucose tolerance test - wont eat for 8-12hrs before, then given some glucose, then blood measured at intervals after
fasting = 5.6, two hour = 7.8
if previous GDM pregnancy - done asap after booking, and again at 24-28 weeks if first was normal
any other risk factor - done at 24-28 weeks
risk factors include BMI >30, previous macrosomic baby, first degree relative with diabetes, south asian, black carribean, middle eastern
glycosuria of 2+ or above on one occasion or of 1+ or above on two or more occasions during routine antenatal care may indicate undiagnosed GDM. Consider further testing to exclude GDM
management of gestational diabetes
consultant led
most treated with lifestyle modifications
offer metformin to women with GDM if targets are not met within 1-2 weeks
offer insulin instead of metformin if CI - advise tho of risk of hypo- always have a fast-acting form of glucose in case
offer insulin +metformin if target not met
offer insluin straight away with or without metformin if fasting glucose >7 at diagnosis
advise give birth no later than 40+6 weeks - offer induction or c section to those that haven’t by then (a bit earlier if on treatment - 37-38w)
discontinue treatment immediately after birth
when to offer a fasting blood glucose test after birth for a women with GDM
6-13 weeks after birth
if >7 then is likely they have diabetes
gestational hypertension vs pre-eclampsia
gestational hypertension = pregnancy-induced hypertension (SBP > 140 or DBP > 90 or increase above booking readings SBP >30 or DBP > 15) that develops after 20 weeks gestation - will resolve after birth
pre-eclampsia = pregnancy -induced hypertension + proteinuria (>0.3g/24hr) and/or oedema - (most cases occur after 24 weeks but definition is after 20)
3 anti-hypertensives safe in pregnancy
labetolol
nifedipine
methyldopa - NB if this is use, switch back to pre-pregnancy anti-HTN regime within 2 days of delivery due to increased risk of post natal depression on this
definition and management of severe gestational HTN
> 160/110
admit to hosptial
start IV labetolol to keep SBP <150 and DBP <100
CTG to check on baby
test BP 4x per day and check for proteinuria once a day
discharge one BP in target range
management of mild and moderate gestational hypertension
mild - check BP and proteinuria weekly
moderate - twice weekly, and start labetalol to keep SBP <150 and DBP <100, and arrange bloods to check liver function, FBC and U+E for signs of pre-eclampsia
(nafedipine 2nd line, methyldopa 3rd line)
HELLP syndrome
haemolysis, elevated liver enzymes, low platelets
investigations for pre-eclampsia - DUCH
BP and urine dip (2+)
then confirm via urinalysis - MC+S (rule out UTI), then 24-hour urine collection or calculation of albumin:creatinine ratio (or protein:creatinine ratio)
FBC - low platelets and anaemia in HELLP
LFTs - raised transaminases
U+E - keep an eye on creatinine for AKI
coagulation profile - prolonged PT and APTT
high LDH in haemolysis
high urate - indicates worsening disease
USS - assess fetal growth and amniotic fluid volume
dopper of umbilical arteries**
CTG
use placental growth factor (PIGF) to test in those with pre-existing HTN and renal disease
management of mild and moderate pre-eclampsia (not including delivery)
mild - proteinuria with BP 140/90-149/99
moderate - proteinuria and BP 150/100 -159/109
both same
admit if concerns for mother or baby or high risk of adverse effects suggested by fullPIERS or PREP-S
monitor BP QDS if in hospital, if not every 48 hours
twice weekly bloods
anti-HTN with labetalol
carry out US and CTG at diagnosis
repeat US 2-weekly
VTE prophylaxis if in patient
management of severe pre-eclampsia (not including delivery)
severe - BP >160/110
admit
antihypertensive - labetalol oral, if not IV labetalol, or oral nifedipine, or IV hydralazine
monitor BP at least QDS (but at first, every 15-30 minutes until BP is less than 160/110)
bloods three times weekly: U&Es, FBC, LFTs
carry out CTG and US of fetus at diagnosis and if normal, repeat US every 2 weeks
repeat CTG if clinically indicated
VTE prophylaxis
delivery for pre-eclampsia
(up to this point - patients can usually be managed conservatively until 34w as long as they’re stable - then just antihypertensives, monitor +/- admit)
anti-HTN oral or IV labetolol or oral nifedipine or IV hydralazine if SBP >160 or DBP >110
magnesium sulphate if seizure concern 24 hours before delivery
fluid restriction due to pulmnoary oedema being a significant cause of maternal death in pre-eclampsia
CTG throughout
BP measurement throughout
3rd stage of labour with syntocinon (not ergometrine or syntometrine)
only offer delivery <34 weeks if severe HTN refractory to treatment or complications develop like eclampsia, HELLP, reversed umbilical diastolic flow - consider steroids and mag sulph
consider <37 weeks if inability to control BP (tried >3 classes), <90% sats, HELLP, eclampsia, non-reassuring CTG - consider steroids
from 37w onwards - initiate birth within 24-48 hours
offer IV Mg sulphate and a course of antenatal corticosteroids (if <34+6) if indicated - e.g. in severe pre-eclampsia
post-natal management for pre-eclampsia
important to monitor mother as still at risk of eclamptic seizures measure bloods 48-72 hours after delivery - FBC, U+Es,LFTs
monitor fluid balace
measure BP every day or other day for 2 weeks, reducing the anti-HTN gradually as it falls
urine dip at 6w to ensure no proteinuria
(anti-HTN may be needed for several weeks after birth)