Anesthetics Flashcards
What are the ocular adverse effects of anesthetics?
- Epithelial desquamation*
- Corneal edema (may overestimate IOP)
- Conjunctival hyperemia
- Contact dermatitis
- Burning, stinging and lacrimation#
- Delayed wound healing (prolonged use)
- **Rare: seizures, CNS depression
T/F: Anesthetic combos toxicity is not additive.
True
How long should you wait for Lidocaine to start its action?
4-6 minutes
T/F: Amide anesthetics are metabolized by the liver.
True. Unlike Ester anesthetics which are metabolized by pseudocholenistrase.
T/F: Tetracaine has the highest corneal toxicity/penetration.
True
*Tetracine is used in epithelial debridement.
T/F: Lidocaine is used in forced ductions and chalazion surgery.
True
T/F: Toxicity of anesthetics is exponentially related to dose.
True. so if you double the dose, it is then 4X as toxic.
What are the adverse effects of anesthetics in CNS (high dose)?
Nystagmus, tremor, depression, death
T/F: Hypersensitivity to anesthetics is more common in amide anesthetics than in ester anesthetics.
False. Hypersensitivity is more common in ESTER anesthetics (usually occurs in 5-10 minutes).
What is the pregnancy rating of Lidocaine?
B
*whereas most of the ester anesthetics are category C
What is the number one sign of anesthetic abuse syndrome?
1 sign of topical anesthetic abuse: yellow-white stromal ring @ active site
T/F: Cocaine unlike other anesthetics, vasoconstiricts instead of vasodilate.
True
