feb 10 Flashcards

1
Q

what may trigger methemoglobinemia?

A

Exposure to oxidizing substances:

  • dapsone
  • nitrites
  • local/topical anesthetic
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2
Q

clinical exam findings of methemoglobinemia?

A
  • cyanosis
  • pulse oximetry of approx 85%
  • dark chocolate coloured blood
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3
Q

lab findings of methemoglobinemia?

A

-normal paO2

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4
Q

path of methemoglobinemia?

A

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

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5
Q

does supplemental oxygen therapy help with methemoglobinemia?

A

no

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6
Q

treatment of methemoglobinemia?

A

methylene blue

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7
Q

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

A

internal capsule

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8
Q

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

A

STRUGE WEBER

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9
Q

pathophys of sturge weber

A

mutation of GNAQ gene

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10
Q

features of sturge weber

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