What is the IM dose of Ketamine in adult chemical restraint, and what are the max limits?

What is the IM dose of Ketamine in adult chemical restraint, and what are the max limits?

• A. 2 mg/kg IM (May repeat 2x) (Max single 200 mg Max total 400 mg)
• B. 3 mg/kg IM (May repeat 1x) (Max single 300 mg Max total 600 mg)
• C. 0.5 mg/kg IM (May repeat 2x) (Max single: 90 mg Max total: 180 mg)
• D. 4 mg/kg IM (May repeat 1x) (Max single: 400 mg Max total: 800 mg)

Answer: (D)

The important idea here is how ketamine is dosed intramuscularly for adult chemical restraint, balancing rapid effect with safety limits. An IM dose of 4 mg/kg is used to achieve quick dissociation and sedation, with the option to repeat once if additional control is needed. However, there are hard caps: no single injection should exceed 400 mg, and the total across both injections should not go beyond 800 mg. These limits let you obtain effective sedation promptly while reducing the risk of adverse effects such as prolonged sedation, respiratory issues, or cardiovascular instability. For a lighter patient, the initial dose will be under 400 mg and a second dose may bring the total up to the 800 mg ceiling; for someone heavier, the first dose will hit the 400 mg cap, and a second dose can still bring the total to 800 mg.

The important idea here is how ketamine is dosed intramuscularly for adult chemical restraint, balancing rapid effect with safety limits. An IM dose of 4 mg/kg is used to achieve quick dissociation and sedation, with the option to repeat once if additional control is needed. However, there are hard caps: no single injection should exceed 400 mg, and the total across both injections should not go beyond 800 mg. These limits let you obtain effective sedation promptly while reducing the risk of adverse effects such as prolonged sedation, respiratory issues, or cardiovascular instability. For a lighter patient, the initial dose will be under 400 mg and a second dose may bring the total up to the 800 mg ceiling; for someone heavier, the first dose will hit the 400 mg cap, and a second dose can still bring the total to 800 mg.