What should you avoid with porphyria? (4 drugs)
a) Barbiturates, opioids, propofol, ketamine
b) Benzodiazepines, NSAIDs, succinylcholine, nitrous oxide
c) Etomidate, midazolam, fentanyl, isoflurane
d) Dexmedetomidine, rocuronium, sevoflurane, acetaminophen