<prompt> Commonly used route of administration for general anaesthesia isInhalationalIntravenousIntraarterialSubcutaneous  <response>: Ans. b Intravenous. Ref: Anesthesia by Ajay Yadav 2ndpg. 71; KD Tripathi, 5thpg. 342INTRAVENOUS ANAESTHESIA The most commonly used route of administration used for general anesthesia is IV for induction of anesthesia and inhalational agents are preferred for maintenance. The most commonly used IV anesthetic agent for induction is thiopentone, Ideal characteristics of IV anesthetics are- Compatible with other dugs- High therapeutic index- Inexpensive- Independent of liverkidneys for metabolismexcretion- No toxic metabolites- Long shelf life and resistance to microbial contamination- Non-cumulative- Non-allergenic- No cardiopulmonary depression- No effect on cerebral blood flow- No endocrinologic effect- No pain on injection- Quick and smooth induction-recovery- Reversible with specific antagonist- Potent, so small volume is required for anesthetic inductionmaintenanceIV Anesthetic agents:BarbituratesNon-barbituratesDissociatives- Oxybarbiturate - pentobarbital and methohexital- Thiobarbiturates - thiopental and thiamylal- Propofol- Etomidate- Alphaxalone- PropanididKetamineTiletamine 