Sba Flashcards
Anti D
* < 20w
* > 20w
* Every 1ml =
- < 20w👉 250 IU
- > 20w 👉 500 IU
- Every 1ml = 125 ml
What is the time intervals between anti D shots ?
If the patient is at high risk for antenatal bleeding+ RH - , when to do kleinhouer test ?
6w
Every 2 weeks
A 36-year-old woman with known hypothyroidism has been taking
levothyroxine 100 micrograms once a day. Her most recent thyroid function
tests performed 3 months ago were normal with a thyrotropin (TSH) of
2.5 mU/L. She has come to the early pregnancy unit with abdominal pain and
a positive pregnancy test. Transvaginal ultrasound confirmed an intrauterine
pregnancy.
How would you advise with regards to her levothyroxine dosage?
Increase dose to 125 micrograms per day
* the dose should be increased initially by 25 micrograms daily once pregnancy is confirmed
How to monitor Thyroid function tests in pregnancy?
every 4–6 weeks to maintain optimal serum TSH levels :
(2.5 mU/L in the first trimester and 3 mU/L in the second and third trimesters).
Once optimized, thyroid function tests need to be performed once in each trimester
A 25-year-old woman known to have hyperthyroidism is going for radioactive
iodine therapy. She has been trying to conceive for the last 6 months.
How long should she avoid pregnancy after this treatment?
6 months
A 28-year-old para 1 woman at 40 weeks’ gestation delivered a baby with a
skin condition, diagnosed as ‘Aplasia cutis congenita’. She is known to have
hyperthyroidism secondary to Grave disease and has been on anti-thyroid
medication throughout the pregnancy.
Which one of the medications below is known to cause the above
condition?
a. Carbimazole
b. Hydrouracil
c. Levothyroxine
d. Methythiouracil
e. Propylthiouracil
Carbimazole
& methimazole & misoprostol : rare, reversible and benign condition is characterised by skin defects mostly on the scalp.
What is the preferred agent among anti-thyroid medication in the pregnancy ?
Propylthiouracil
* carbimazole and methimazole
are not contraindicated in pregnancy and need not be changed in women stable on
these medications pre-pregnancy, as ( ‘aplasia cutis congenita’ ) is very rare.
Which one of the immunosuppressant drugs would be contraindicated in
pregnancy?
a. Azathioprine
b. Cyclosporine
c. Hydroxychloroquine
d. Sirolimus
e. Tacrolimus
Sirolimus
& mycophenolate mofetil
* other cytotoxic agents like cyclophosphamide and chlorambucil are teratogenic and should be
avoided in pregnancy
What is the recurrence rate of pyelonephritis during the pregnancy?
20%
* regular screening should be offered for asymptomatic bacteriuria for the remainder of the pregnancy
When to offer ultrasound of the urinary tract after an Acute pyelonephritis is diagnosed in pregnancy?
If there is no improvement within 48–72 hours of starting broad spectrum intravenous antibiotics
What is the recommended time interval for conception after
1- an allograft transplantation?
2- breast Cancer?
3- gastric operations ?
4- tracheotomy?
5- radioactive iodine?
6- methotrexate?
7- tamoxifen ?
1- 24 months
* serum creatinine preferably below 125 micromol/L
2- breast Cancer: 2years
3- gastric operations : 1 year
4- tracheotomy : 6 months
5- radioactive iodine : 6 months
6- methotrexate 3 months
7- tamoxifen : months
What is the incidence of Acute pyelonephritis in pregnancy?
1-2%
Which one of the following statements is true about pemphigoid
gestationis?
a. Associated with other autoimmune diseases
b. Most common dermatosis of pregnancy
c. Not associated with any adverse effect on mother or foetus
d. Rash usually begins in the abdomen with periumbilical sparing
e. Recurrence in subsequent pregnancies is rare
Associated with other autoimmune diseases ( particularly Graves disease)
* rare : occurring in 1:1700 to 1:50 000 pregnancies
* There is an association with foetal growth restriction
* The rash usually begins on the abdomen around the umbilicus, but with mucosal sparing.
* Recurrence may occur in subsequent pregnancies with earlier onset and increasing severity, and also with menstrual cycles and oral contraception.
* Exacerbations and remissions are characteristic, with a postpartum flare occurring in about 75% of women.
A 30-year-old primigravida at 35 weeks’ gestation with monochorionic
diamniotic pregnancy presents with intense itching and rash on the abdomen.
On examination there were erythematous papules and plaques in the striae
gravidarum with umbilical sparing.
The most likely diagnosis is which one of the following?
a. Pemphigoid gestationis
b. Polymorphic eruption of pregnancy
c. Atopic eruption of pregnancy
d. Prurigo of pregnancy
e. Pruritic folliculitis of pregnancy
Polymorphic eruption of pregnancy
Polymorphic eruption of pregnancy
Incidence?
Risk factors?
Presentation?
Adverse effects?
Recurrence?
Incidence 1 / 200
Risk factors : multiple pregnancy + nullipara
Presentation : third trimester or immediately postpartum ( umbilical sparing)
Adverse effects : none
Recurrence : rare
A 34-year-old woman at 36 weeks’ gestation was admitted with feeling
unwell, vomiting and right-sided upper abdominal pain. On examination
she was tender in the right upper quadrant with BP 140/90 mmHg, pulse
90 bpm, temperature 37.6°C and protein 1+ in the urine. Her Hb was 128 g/L,
platelets 160, white blood cell (WBC) count was elevated at 18, liver function
was deranged with hyperbilirubinaemia and moderately raised alanine
aminotransferase (ALT) and aspartate aminotransferase (AST). She was
hypoglycaemic and clotting was mildly deranged with prolonged prothrombin
time (PT) and activated partial thromboplastin time (aPTT). Renal function
and liver scan were normal.
What is the most likely diagnosis?
a. HELLP syndrome
b. Pre-eclampsia
c. Cholecystitis
d. Acute fatty liver of pregnancy
e. Hepatic rupture
Acute fatty liver of pregnancy
(hypoglycaemic + hyperbilirubinaemia + gradual onset of nonspecific symptoms + normal plt count)
hellp syndrome VS acute fatty liver of pregnancy :
Parity?
Juandice ?
Ammonia?
Encephalopathy?
Platelets?
PT / PTT ?
Fibrinogen?
Glucose?
Parity / AFLP : nullipara+ twins
Juandice AFLP
Ammonia AFLP
Encephalopathy AFLP
Platelets / both more common in HELLP
PT / PTT / AFLP : prolonged
Fibrinogen / AFLP : low
Glucose / AFLP : low
A 38-year-old primigravida at 36 weeks’ gestation with dichorionic diamniotic
twin pregnancy was diagnosed with acute fatty liver of pregnancy. She was
stabilised and delivered by caesarean section.
What is the risk of recurrence in subsequent pregnancies?
25 %
A 26-year-old, nulliparous woman at 33 weeks’ gestation presented with severe
generalised itching that was worse at night and also present on the palms and
soles. She was diagnosed to have intrahepatic cholestasis of pregnancy (IHCP)
and was started on ursodeoxycholic acid and chlorpheniramine.
Which one of the statements is true with regards to counselling women with
IHCP?
a. Ursodeoxycholic acid (UDCA) treatment improves foetal outcomes in
women with IHCP
b. There is good evidence that foetal risk is related to the maternal serum bile
acid levels
c. Liver function tests should be monitored twice weekly after the diagnosis of
IHCP
d. Risk of recurrence in subsequent pregnancies is about 90%
e. Hormone replacement therapy should be avoided
Risk of recurrence in subsequent pregnancies is about 90%
* oestrogen-containing oral contraceptives should be avoided, but hormone
replacement therapy should not be omitted
Recurrence:
HELLP / AFLP / IHCP ?
HELLP 5%
AFLP 25%
IHCP 90%
A 28-year-old nulliparous woman with sickle cell disease (SCD) attends
the preconception clinic for advice as she wishes to start her family. Her
husband’s haemoglobinopathy screen was normal, HbAA. You have reviewed
her vaccination history and noted that she had haemophilus influenza type B
conjugated meningococcal C vaccine, pneumococcal vaccine and hepatitis B
vaccines previously (5 years ago) and influenza vaccine 8 months ago.as
Which one of the vaccines would you recommend her to have
preconceptually?
pneumococcal vaccine ( should be given every 5 years )
* haemophilus influenza type b , conjugated meningococcal C vaccine ,Hepatitis B vaccine as a single dose
A 30-year-old nulliparous woman with sickle cell disease (SCD) attends your
clinic for preconception advice. You have requested the following tests to
assess for the chronic disease complications prior to stopping contraception.
Which one of these screening tests is not indicated yearly?
a. Pulmonary function tests
b. Renal function tests
c. Liver function tests
d. Retinal screening
e. Red cell antibody screening
Red cell antibody screening
( not yearly, maybe more often )
* Pulmonary function tests👉 Screening for pulmonary hypertension with echocardiography
* Renal function tests 👉 Blood pressure and urinalysis ( to identify proteinuria )
* Liver function tests 👉 deranged hepatic function
* Retinal screening 👉 Proliferative retinopathy ( especially patients with HbSC )
+ Screening for iron overload
A 25-year-old woman with transfusion-dependent beta thalassaemia has been
trying to conceive and undergoing ovulation induction.
Which one of the statements is true with regards to young women with beta
thalassemia major?
a. Diabetes is the most common endocrine complication
b. Hyperthyroidism is a known complication
c. Desferrioxamine can be safely used throughout pregnancy
d. Pneumococcal vaccine should be given annually
e. Cardiac failure is the primary cause of death in more than 50% cases
Cardiac failure is the primary cause of death in more than 50% cases
* hypogonadotrophic hypogonadism is the most common endocrine complication
Diabetes is the second , hypothyroidism is the third.
* Desferrioxamine during ovulation induction. It should be avoided in the first trimester
( Safe > 20w)
A 26-year-old nulliparous woman at 36 weeks’ gestation was diagnosed as
having idiopathic immune thrombocytopenia (ITP). Her recent platelet count
was 70 × 109
/L.
Which one of the following statements is true?
a. Should be treated with immunosuppressants
b. Regional anaesthesia is contraindicated
c. Instrumental delivery is contraindicated
d. Deliver by caesarean section at 37 weeks
e. Neonatal thrombocytopenia occurs in 25% cases
Regional anaesthesia is contraindicated ( if platelet counts are < 80 × 109/L.)
* very low counts or significant bleeding risk may prompt treatment
with corticosteroids or IV immunoglobulins or immunosuppressants.
* Ventouse delivery is best avoided /but Forceps can be used judiciously .
* Neonatal thrombocytopenia occurs in 10 % cases