Difficult RCOG SBAs Flashcards
What % of haemophillia A is a spontaneous mutation?
50%
Carrier risk is 1 in 20,000
In hyperthyroid in pregnancy what is the most likely cause?
Graves- 95% of hyperthyroid cases in preg
Hyperthyroid prevalence 1/500 in reproductive years
What clotting factors are vit k responsible for?
1972
What is a class 3 haemorrhage?
Loss of 30-40% of blood volume
Class 1 15% (or up to 750ml)
Class 30% (750-1500ml)
Class 4 >40% (1500-2000mls)
What percentage of women have a PPH?
2%
Main causes of transfusion associated death?
TACO
Delay in transfusion
What percentage of patients have alloimmuisation after a transfusion?
1-6%
In pregnancy, what % cardiac output goes to the uterus?
15%
700ml/min
Which clotting factors decrease in pregnancy?
IX
XIII
V
Platelet count
Protein S
If the extem (rotem) or r portion of the teg are prolonged, what does this indicate?
Red Fibrin contributing to clot strength,
Give FFP
What is the most common site of bladder injury?
Midline
Most injuries occur during dissection of the bladder from the cervix
What is direct coupling?
When one hot instrument touches the camera which could for example be touching the bowel and causes injury
What is capacitiative coupling?
Hot instrument in an insulated sheath. The energy builds up in the sheath and then transfers to surrounding tissue causing damage
What is insulation failure?
Microscopic break in the insulation sheath of an energy device?
What is the risk of a fistula forming after bladder injury? despite a catheter for 2 weeks
5%
