Question

___ is a rare and unusual complication triggered by lidocaine and other local anesthetics. This adverse reaction causes iron in Hgb to oxidize to the ferric state. In the ferric state, it is unable to bind oxygen, leading to tissue hypoxia and possibly death.

a) LAST
b) anaphylaxis
c) methemoglobinemia
d) over sedation

Answer 1

Methemoglobinemia is a rare complication caused by local anesthetics, where iron in hemoglobin oxidizes to the ferric state, leading to tissue hypoxia and potentially death. Symptoms include cyanosis and labored breathing.

Step-by-step explanation:

Methemoglobinemia is a rare and unusual complication triggered by lidocaine and other local anesthetics. It causes the iron in hemoglobin to oxidize to the ferric state, which is unable to bind oxygen. This leads to tissue hypoxia and can potentially result in death. Symptoms of methemoglobinemia include cyanosis (blue skin) and labored breathing.