Uworld 4

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5 Class 3 antiarrhythimics?
- dofetilide
- ibutilide
- bretylium
- sotalol
- bretylium
The most common site of the aorta during a deceleration is where?

connection between the ascending and descending aorta
What is the difference between Lacunar infarcts and Charcot-Bouchard Microaneurysm?
- Lacunar infarcts are ischemic events
- Charcot-Bouchard Microaneurysms are hemorrhagic events
What prevents lactation during pregnancy even though prolactin levels are high?
- estrogen
- progesterone
3 enzymes that required Lipoic acid/thiamine?
- alpha ketoglutarate dehydrogenase
- pyruvate dehydrogenase
- branched chain-alpha keto acid dehydrogenase
What triggers neoplastic change in a HBV infected liver>?

integration of the partially double stranded genome into the host cell's genome
2 Causes of foamy, frothy urine?
- proteinuria
- Bile salts
Which DNA polymerase has 5 ' to 3' exonuclease activity?

DNA polymerase I
What bacterial enzyme activates INH?

catalase-peroxidase
What causes fixed splitting?

ASD
What causes paradoxical splitting?

anything that prolongs LV emptying i.e aortic stenosis, LBBB
What causes Wide-Splitting?

conditions which prolong RV emptying i.e pulmonic stenosis or RBBB
What is the preffered way to screen for DM?

fasting blood sugar level
How do you screen pregnant women for diabetes?
everybody else?
- pregnant-oral glucose tolerance test
- everybody else--fasting blood sugar level