Ch 26: Local Anesthetics Flashcards Preview

Lehne's Pharmacology for Nursing Care, 9th ed. > Ch 26: Local Anesthetics > Flashcards

Flashcards in Ch 26: Local Anesthetics Deck (9)
Loading flashcards...
1
Q

What Schedule II drug was our first local anesthetic?

A

Cocaine

p. 247

2
Q

What are the 5 injectable local anesthetics of the amides class? (B-L-M-P-R-)

A
Bupivacaine
Lidocaine
Mepivacaine
Prilocaine
Ropivacaine

(p. 248)

3
Q

What are the 3 injectable local anesthetics of the esters class? (C-P-T-)

A

Chloroprocaine
Procaine
Tetracaine

(p. 248)

4
Q

When local anesthetics administered with epinephrine are used, why should the toes, fingers, noses, ears, and penis be avoided?

A

If used in an area supplied by an end artery, gangrene can occur owing to restriction of blood flow.

(p. 248)

5
Q

Local anesthetics work by…

A

…stopping axonal conduction by blocking sodium channels in the axonal membrane.

(p. 245)

6
Q

Topical benzocaine can cause…

A

…methemoglobinemia, a blood disorder in which hemogloblin is modified such that it cannot release oxygen to tissues.

(p. 246)

7
Q

Allergic reactions to local anesthetics are more likely to occur with the ______ than with the ______.

A

esters; amides

p. 246

8
Q

Cross-sensitivity between the esters and the amides has…

A

…not been observed.

p. 246

9
Q

What is the MOA when lidocaine is used to control dysrhythmias?

A

Suppression of cardiac excitability secondary to blockade of cardiac sodium channels.

(p. 247)

Decks in Lehne's Pharmacology for Nursing Care, 9th ed. Class (110):