Inhaled Anesthesia

Question 1

Metabolism order

Answer 1

Halo>Sevo>Iso>Des>Nitrous Oxide

switch Des and Nitro for order of Blood:gas coefficient

Question 2

Nitrous Oxide

Answer 2

Mac >100, low potency
minimal affect on heart and respiration
supplement or minor surgery, insoluble
Contra. In: pneumothorax, intestine obstruction, air embolus, air in cranium 
no worry for malignant hyp like others

Question 3

Halothane

Answer 3

most potent, highly soluble & metabolized
hepatotoxicity, decrease CO
used in Peds (smells good)
only one without reversible decrease in liver blood flow

Question 4

Isoflurane

Answer 4

very potent, cheap, slow onset and recovery

Question 5

Desflurane

Answer 5

less potent; very insoluble, rapid

airway irritation, not used in kids

Question 6

Sevoflurane

Answer 6

potent
high metabolic processing: avoid in renal dysfunction
not pungent; kids

Question 7

Succinylcholine

Answer 7

depolarizing muscle relaxant
emergent intubation, short procedure, rapid sequence for full stomach
adverse: bradycardia, hyperkalemia, malignant hyp.

Question 8

Vecuronium & Rocuronium

Answer 8

Non depolarizing muscle relaxant
bind AChR to prevent ACh binding
routine intubation, muscle relaxant, emergent intubation if you can’t use succinylcholine