Contraindications to the use of ultra-short-acting barbiturates for general anesthesia:
1. Porphyria
2. Liver dysfunction (they are metabolized in the liver)
3. Emphysema
4. Previous addiction to sedative hypnotic drugs

• Correct answer

  All of the above

• 1,2,3

• 1 and 3

• 2 and 4

• 4 only