feb 10

Question 1

what may trigger methemoglobinemia?

Answer 1

Exposure to oxidizing substances:

• dapsone
• nitrites
• local/topical anesthetic

Question 2

clinical exam findings of methemoglobinemia?

Answer 2

• cyanosis
• pulse oximetry of approx 85%
• dark chocolate coloured blood

Question 3

lab findings of methemoglobinemia?

Answer 3

-normal paO2

Question 4

path of methemoglobinemia?

Answer 4

-Fe2 gets metabolized to Fe3 -> unable to bind oxygen -> cyanosis

Question 5

does supplemental oxygen therapy help with methemoglobinemia?

Answer 5

no

Question 6

treatment of methemoglobinemia?

Answer 6

methylene blue

Question 7

a pure motor hemiparesis can occur from a stroke at which region?

Answer 7

internal capsule

Question 8

is sturge weber or tuberous sclerosis associated with a port wine stain?

Answer 8

STRUGE WEBER

Question 9

pathophys of sturge weber

Answer 9

mutation of GNAQ gene

Question 10

features of sturge weber

Answer 10

• port wine stain
• leptomeningeal capillary-venous malformation
• seizures +- hemiparesis
• intellectual disability
• visual feild defects
• glaucoma