Compared with ketamine, tiletamine-zolazepam can achieve anesthesia with which volume?

• A. It cannot be administered intramuscularly
• B. A small volume can produce complete anesthesia
• C. It requires a larger volume
• D. It has no analgesia

Answer: (B)

The key idea is potency per milliliter. Tiletamine-zolazepam is a highly concentrated combination product, so the dose needed to reach surgical anesthesia is only a small amount of volume. Each milliliter delivers a substantial amount of active drug (tiletamine for anesthesia plus zolazepam for muscle relaxation and sedation), allowing complete anesthesia to be achieved with a much smaller injection volume than ketamine alone, which typically requires a larger volume to reach the same depth. The idea that this mix cannot be given intramuscularly is incorrect, and the notion that it requires a larger volume is the opposite of what actually happens; also, the combination provides more than no analgesia, though the analgesic effect is not the primary purpose.