Medical Complications of Pregnancy Flashcards
What is the effect of pregnancy on ladies with CKD depending on their CKD staging?
CKD stage 1-2: unaffected, good renal outcome
CKD stage 3-5; complications, accelerated decline in renal function
What are the increased risk of CKS on pregnancy outcome?
Preterm
C sec delivery
FGR
When is pregnancy safe in ladies with renal transplants?
SAFE after 2nd year post transplant
What is the aim of pre-pregnancy counselling with previoius DM?
Achieve the best possible glycaemic control before pregnancy
What is the most critical period of the embryo?
The first 42 days
During organogenesis
What are complications of DM in pregnancy for the foetus?
Congenital abnormality Macrosomia > shoulder dystocia Miscarriage/Stillbirth Diabetic retinopathy Infection
What are complications of DM in pregnancy for the mother?
PET
Severe hyper/hypoglycaemia
DKA
Increased operative delivery rate
How. do you treat diabetic ladies to prevent complications?
75g aspirin from 12 wks gestation to delivery
how do you monitor DM in pregnancy=
Home blood glucose monitoring
Up to 7 times a day, before and after meals
What is the target for blood glucose pre- and post-prandial for DM patients?
Pre-prandial: <5.4
Post-prandial: <7.8
Why is hyperglycaemia Moree common in pregnancy=
Because insulin resistance in creases throughout pregnancy
So women with DM are required to increase their dose of metformin / insulin
What additional scans need to be arranged for DM patients in pregnancy ? Why=
additional US growth scans
This is to assess foetal growth (diagnose macrosomia, polyhydramnios)
How do you adjust insulin therapy if antenatal corticosteroids. are needed?
Give additional insulin
To maintain normoglycaemia
What does the presence of. complications in DM pregnant ladies mean for their delivery?
Presence of complications means that 50% of women deliver by C sec
What do you need to change regular insulin to in labour’
To INSULIN SLIDING SCALE
When is the increase in insulin dose requirement especially important in pregnancy?
In the second half of pregnancy
How many pregnancies does GDM occur in?
1 in 5 pregnancies affected
What is GDM?
Any degree of glucose intolerance with onset in pregnancy
What does GDM increase the risk of in later life?
Increased risk of T2DM
Why does GDM occur?
In pregnancy there is progressive insulin resistance (more insulin needed to respond to same level of glucose)
So the insulin requirement rises
If a woman has poor pancreatic reserve, her pancreas cannot response with increased insulin, leading to transient hyperglycaemia
What are RF for GDM?
Obesity, poor diet Asian Prior GDM FH GDM Prior macrosomic babuy
What are maternal sx of GDM?
Asymptomatic
Polyuria, polydipsia
Fatigue
When would you do a glucose test for GDM, and what kind=
Oral Glucose Challenge test (wait. 1h after drink)
Oral Glucose Tolerance test (if STRONG risk. Wait. 2h after drink)
How does the OGTT work?
Take fasting blood glucose
Give 75g glucose drink
Take 2h glucose
What are the values on OGTT for dx of GDM?
Fasting blood glucose >5.6
2h OGTT >7.8
What tx exist for GDM?
Expectant: improve diet and lifestyle
Medical: Metformin / insulin
When do you aim to deliver for GDM?
BEFORE 40 wks
How does the thyroid requirement change in pregnancy?
Thyroid requirement INCREASES
What is the most common cause of hypothyroidism?
Hashimoto
Is it safe to be on thyroid replacement therapy throughout pregnancy?
YES
How do you treat hyperthyroidism in pregnancy?
Carbimazole/prolylthiouracil at LOWEST DOSE POSSIBLE (may cross placenta causing foetal hypothyroidism)
What medicine is strongly contraindicated fro hyperthyroidism in pregnancy?
RADIOACTIVE IODINE
What is a risky complication of taking Carbimazole/prolylthiouracil
Agranulocytosis
What are risks of uncontrolled thyrotoxicosis?
Miscarriage preterm delivery
Why does GDM have complications on the foetus?
Because glucose is trasnsported across the placenta, but insulin is not
So the foetus can become hyperglycaemic
The foetus will increase its own insulin levels in response, causing hyperinsulinaemia
Why does increased foetal insulin cause macrosomia?
Because insulin is similar in structure to GH
What are the effects of hyperinsulinaemia on the foetus?
Macrososmia
Organomegaaly
Erythromìpioesis
Polyhydraknios.
What are risks of GDM on the baby after delivery?
Baby hypoglycaemia (foetal levels of insulin stay high but sudden drop in glucose)
RDS (as insulin decreases surfactant production)
What are normal physiological changes in the skin of a pregnant woman?
Increased pigmentation
Spider nave
Pruritus (no rash)
What pre-existing skin conditions can worsen during pregnancy?
Eczema
Acne
What are possible skin conditions in pregnancy that cause itching?
Pemphigoid gestationitis
Polymorphic eruption of pregnancy
Prurigo of pregnancy
Pruritic folliculitis of pregnancy
What is the cause of Pemphigoid gestationitis
Autoimmune BULLOUS disorder
Describe the lesions in Pemphigoid gestationitis
Bullae (large fluid filled blisters) around the border of the erythematous rash
Lots of erythematous rashes
Start at the abdomen, spread to the rest of body
Spare the face and mucosa
Does Pemphigoid gestationitis affect the foetus?
YES
It is linked to IUGR (give extra growth scans)
The newborn may also develop skin lesions
How do you diagnose Pemphigoid gestationitis
Skin biopsy
How do you treat Pemphigoid gestationitis
Prednisolone, antihistamine
What is the recurrence rate of pemphigoid gestationitis?
HIGH
What is Polymorphic eruption of pregnancy
benign, self limiting pruritus inflammation
When in the pregnancy does Polymorphic eruption of pregnancy usually present
3rd trimester / immediately post part
Where does Polymorphic eruption of pregnancy occyr
On lower abdomen WITH PERI UMBILICAL SPARING
May extend to thighs, buttocks, legs, arms
What is the recurrence of Polymorphic eruption of pregnancy like
DOES NOT RECUR
How does Polymorphic eruption of pregnancy impact the pregnancy ?
NO IMPACT ON PREGNANCY
What are RF for Polymorphic eruption of pregnancy
- overextended abdomen (polyhydramnios, multiple pregnancies, macrocosmic baby) - because the skin stretch causes connective tissue damage and inflammatory response
- nulliparous
- multiple pregnancy
how do you treat Polymorphic eruption of pregnancy
Emollient Topical steroid (hydrocortison()
Describe the rash in Polymorphic eruption of pregnancy
erythematous rash on abdomen with peri umbilical sparing
Explain prurigo of pregnancy
Exoriated papule on extensor limbs, abdomen, shoulders +Resolves after delivery
How do you treat prurigo of pregnancy
Topical steroids + emollients
What is pruritus folliculitis of pregnancy?
Pruritic follicular eruption of papule and pustules affecting the trunk
Looks similar to acne
Resolves with delivery