Random Specialities Facts + Past exam Qs Flashcards
(791 cards)
Uterus palpable abdominally at how many weeks
Uterus palpable abdominally at 12-14 weeks
Engagement =
If 2/5 head palpable abdominally, then more than half has entered the pelvis and so the head
must be engaged
What is used to date pregnancies under 14w?
NICE guidelines: should date women using crown rump length if <14 weeks
Causes of raised AFP
Alpha fetoprotein
o Produced by fetal liver
o Open neural tube defect or abnormalities such as gastrochisis - increased maternal AFP
o Indicates risk of third trimester complications
o Seldom used as USS more accurate
Low PAPP-A (1st tri) High B-hCG (1st/2nd) Low AFP (1st/2nd) Low oestriol (2nd) High inhibin (2nd)
DOWNS
Absence of cranium
Frog Eye appearance on USS
Incompatible with life
Anencephaly
Partial extrusion of abdominal contents in peritoneal sac
50% have chromosomal problem
Isolated, small defects have good prognosis
Exomphalos
Free loops of bowel in amniotic cavity
Rarely associated with other abnormalities
Common if mother young
>90% survive – requires postnatal surgery
Gastroschissis
Dependent on systemic vascular resistance and cardiac output
Falls to a minimum in second trimester by 30/15mmHg due to SVR
By term, BP is at pre-pregnant levels
HTN due to PET is largely due to SVR
Protein excretion in pregnancy is increased, but in absence of underlying renal disease, should be
<0.3g/24h
Normal BP changes in Pregnancy
Normal BP changes in Pregnancy
Dependent on systemic vascular resistance and cardiac output
Falls to a minimum in second trimester by 30/15mmHg due to SVR
By term, BP is at pre-pregnant levels
HTN due to PET is largely due to increased SVR
Protein excretion in pregnancy is increased, but in absence of underlying renal disease, should be
<0.3g/24h
Simple classification of PET
Mild (140/90-149/99mmHg) Moderate (150/100-159/99mmHg) Severe (>160/110mmHg)
PCR level in PET
Level of 30mg/nmol = 0.3g/24h protein excretion
PCR level in PET
Level of 30mg/nmol = 0.3g/24h protein excretion
Sx of magnesium toxicity
Respiratory depression and hypotension
Preceded by loss of patellar reflexes, which are tested regularly
ECG changes in pregnancy
ECG changes = LAD and T wave inversion
Thromboprophylaxis in pregnancy?
LMWH
What drug is given alongside anti-epileptics from week 36?
10mg vit K given from 36 weeks onwards
Acute hepatorenal failure, DIC and hypoglycaemia high maternal and fetal mortality
Extensive fatty change
Malaise, vomiting, jaundice and vague epigastric pain (first sx = thirst)
Early diagnosis and promt delivery essential
Correction of clotting defects and hypoglycaemia required first
Tx: supportive, dextrose, fluid balance, dialysis
Acute Fatty Liver
lupus anticoagulant and/or anticardiolipin antibodies
Antiphospholipid Syndrome
Criteria for APLS
Diagnosis
1+ clinical criteria
o Vascular thrombosis
o 1+ death of fetus >10 weeks
o PET or IUGR requiring delivery <34 weeks
o 3+ fetal loss <10 weeks, otherwise unexplained
With laboratory criteria measured twice >3 months apart
o Lupus anticoagulant
o High anticardiolipin antibodies
o Anti-B2 Glp I ab
Diagnosis
1+ clinical criteria
o Vascular thrombosis
o 1+ death of fetus >10 weeks
o PET or IUGR requiring delivery <34 weeks
o 3+ fetal loss <10 weeks, otherwise unexplained
With laboratory criteria measured twice >3 months apart
o Lupus anticoagulant
o High anticardiolipin antibodies
o Anti-B2 Glp I ab
Criteria for APLS
Preg SE of paroxetine?
Paroxetine -> cardiac defects
Not teratogenic
Use associated with PTD, IUGR, stillbirth, SIDS and developmental delay
Which recreational drug?
Opiates
Which recreational drug?
Teratogenic
Risk cardiac defects and gastroschicosis
Pregnancy complications are similar to cocaine
Ecstasy