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The only depolarizing muscle relaxant in clinical use is: - 🧠 ANSWER ✔✔-
Succinylcholine (Anectine)
-Ultra short acting
Short-Acting Non-Depolarizing Blocker - 🧠 ANSWER ✔✔-Mivacurium
Intermediate-acting non-depolarizing blockers - 🧠 ANSWER ✔✔Atracurium
Cisatracurium
Rocuronium
Vecuronium
, Long-Acting Non-Depolarizing Blocker - 🧠 ANSWER ✔✔pancuronium
How is acetylcholine synthesized? Metabolized by? Metabolites? - 🧠
ANSWER ✔✔-Synthesized in presynaptic nerve terminal by N-
acetyltransferase, combines acetate and choline
-Metabolized acetylcholinesterase via rapid hydrolysis into choline and
acetic acid
-Choline re-enters the presynaptic terminal and used to make more Ach
Single twitch test - 🧠 ANSWER ✔✔-A single supramaximal electrical
stimulus ranging from 0.1-1.0 HZ
-Requires baseline before drug administration
-Only tells you 100% paralyzed (no twitch) or <100% (1 twitch)
Train of Four Test - 🧠 ANSWER ✔✔-A series of 4 twitches at 2 Hz every
0.5 sec for 2 seconds
-Reflects blockade from 70-100%; useful during onset, maintenance, and
emergence
-TOFR compares T4 to T1