feb 10 Flashcards
1
Q
what may trigger methemoglobinemia?
A
Exposure to oxidizing substances:
- dapsone
- nitrites
- local/topical anesthetic
2
Q
clinical exam findings of methemoglobinemia?
A
- cyanosis
- pulse oximetry of approx 85%
- dark chocolate coloured blood
3
Q
lab findings of methemoglobinemia?
A
-normal paO2
4
Q
path of methemoglobinemia?
A
-Fe2 gets metabolized to Fe3 -> unable to bind oxygen -> cyanosis
5
Q
does supplemental oxygen therapy help with methemoglobinemia?
A
no
6
Q
treatment of methemoglobinemia?
A
methylene blue
7
Q
a pure motor hemiparesis can occur from a stroke at which region?
A
internal capsule
8
Q
is sturge weber or tuberous sclerosis associated with a port wine stain?
A
STRUGE WEBER
9
Q
pathophys of sturge weber
A
mutation of GNAQ gene
10
Q
features of sturge weber
A
- port wine stain
- leptomeningeal capillary-venous malformation
- seizures +- hemiparesis
- intellectual disability
- visual feild defects
- glaucoma