High Yield Exam Cram Flashcards
Describe the process of oocyte maturation
Describe the process of sperm development
How many days does it take to produce a sperm?
64 days
In the male, which cells does LH act upon?
LH acts on Leydig cells which make testosterone (negative feedback via testosterone)
In the male, which cells does FSH act upon?
FSH acts on Sertoli cells which produce Sperm (negative feedback via Inhibin)
fSh, Sertoli, Sperm
What is a normal sperm count?
> 15 million/ ml
What is a normal sperm motility (%)?
> 32%
which cells produce oestrogen?
Granulosa cells
What stimulates granulosa cells to produce oestrogen?
FSH
(F is next to G in the alphabet - Fhs Granulosa)
What produces progesterone?
Corpus luteum
What stimulates theca cells?
LH
(t and L look similar)
What do theca cells produce?
Androgens
thecA Androgens
Which hormone drives the follicular phase?
Oestrogen
Which hormone spikes and results in ovulation?
LH
Which hormone drives the luteal phase?
Progesterone
When in the cycle is the follicular phase?
0-14 days
On which day does ovulation occur?
14
on which day of the cycle does menstruation start?
day 28
List the stages of embryo implantation
Which part of the blastocyst forms the baby and which part forms the placents?
inner cell mass forms the baby
outer shell of trophoblastic cells forms the placenta
What hormones are needed during embryogenesis to form male genitals?
Testosterone and anti-mullerian hormone
Which hormone is needed during embryogenesis to form testes? (bonus points if you remember the gene that encodes it)
Testes determining factor produced from the SRY gene
What is
A) Gravidity
B) Parity
Gravidity = Total number of pregnancies, including miscarriages and terminations (Grand Total)
Parity = Number of pregnancies that Progressed past 24 weeks
What ultrasound scan sign is associated with - dichorionic/diamniotic twins?
lambda sign
What gestation should dichorionic/diamniotic be delivered?
37 weeks
What ultrasound scan sign is associated with - Monochorionic/diamniotic twins
T sign
What gestation should monochorionic/diamniotic be delivered?
36 weeks
What gestation should triplets be delivered?
35 weeks
What happens to insulin in pregnancy and why?
Insulin deficiency occurs due to human placental lactogen
What happens to iodine levels during pregnancy?
Iodine levels fall causing an iodine deficiency
what happens to the immune system during pregnancy?
Immunosuppression (to tolerate the baby!)
Name the heart murmur that is normal in pregnancy
End diastolic murmur
What happens to systemic vascular resistance in pregnancy?
reduces
What happens to blood gas in pregnancy
Compensated respiratory alkalosis
Is hydronephrosis in pregnancy normal?
Yes
What pathological urine findings are in fact normal in pregnancy?
Glycosuria and microscopic haematuria
Should you lie a pregnant woman on the left or on the right?
LEFT lateral tilt
When in the pregnancy would you expect to feel foetal movement?
> 20 weeks
When is the dating scan carried out?
10-14 weeks
What is the purpose of the dating scan?
Estimates due date
How many babies are in there
How is baby developing (+ nuchal translucency)?
What else is done at the same time as the 10-14 week scan?
Blood screening for rubella, hepatitis B, syphillis, HIV, anaemia, isoimmunisation (anti-D) & genetic screen for chance of downs/edwards/pataus
What happens at the 18-21 week scan?
this is the anomaly scan- it is looking for defects
Describe the screening that can be carried out for genetic anomalies such as downs, edwards and pataus and list the gestatation that each can be done at
What is the risk of miscarriage with chorionic villous sampling?
1:200 (0.5%)
What is the risk of miscarriage with amniocentesis?
1:100 (1%)
what is the definition of miscarriage?
Foetal loss<24 weeks
What is the definition of chronic/essential hypertension?
Hypertension present pre-pregnancy or ≤ 20 weeks gestation
What is the definition of gestational hypertension?
Hypertension present >20 weeks gestation
What is the definition of pre-eclampsia?
Hypertension present >20 weeks gestation with proteinuria or end organ malfunction
What is the definition of HELLP syndrome?
increased liver enzymes
decreased platelets
haemolysis
How is pre-eclampsia managed?
Magnesium sulphate, labetalol, corticosteroids & deliver the baby!)
What is the definition of eclampsia?
Pre-eclampsia with seizures
What is the management of eclampsia?
Magnesium sulphate, labetalol, corticosteroids & deliver the baby
What is the management of HELLP syndrome?
Magnesium sulphate, labetalol, corticosteroids & deliver the baby
What HbA1c should you aim for if you are diabetic and hoping to get pregnant?
HbA1c < 6.5% (48)
What sugar level should you aim for if you are diabetic and hoping to get pregnant?
4-7
What are the most common bacterial causes of chorioamnionitis?
usually E.coli or Group B strep
What are the foetal consequences of chorioamnionitis
Neonatal sepsis
Foetal brain damage and death
What are the foetal consequences of chicken pox infection in the 1st 28 weeks of pregnancy
Skin scarring, neurological issues, congenital eye disease, limb hypoplasia
What are the foetal consequences of parvovirus infection in the 1st 12-20 weeks of pregnancy
Anaemia, cardiac failure, hydrops fetalis & foetal death
What are the foetal consequences of toxoplasmosis infection in the third trimester of pregnancy
Hydrocephalus, intracranial calcification, microcephaly, chorioamnionitis, ventriculomegaly, hepatosplenomegaly, IGR, miscarriage, intrauterine death
What are the foetal consequences of HIV infection in pregnancy
Pre-eclampsia, miscarriage, pre-term birth, low birth weight.
Can you have a natural birth and breastfeed if you are infected with HIV?
Yes, but viral load must be <50 (undetectable viral load) for a safe vaginal birth & Breastfeeding
What are the foetal consequences of Hep B infection in pregnancy
Liver cirrhosis