Which of the following is NOT a method for sedation in combat casualty care?

Ibuprofen is classified as a non-steroidal anti-inflammatory drug (NSAID) and is primarily used for pain relief and to reduce inflammation. It does not possess the sedative properties that are typically required for sedation in the combat casualty care environment.

In contrast, the other options mentioned—OTFC (Oral Transmucosal Fentanyl Citrate), IV/IO Fentanyl, and Ketamine—are all recognized methods of sedation or pain management. OTFC is used for rapid pain relief, IV/IO Fentanyl provides quick analgesia through intravenous or intraosseous administration, and Ketamine not only offers analgesic effects but also induces sedation and dissociation, making them all suitable choices for managing a patient's level of consciousness in traumatic settings. Therefore, while the other options serve to sedate or manage pain effectively, Ibuprofen lacks these capabilities, making it the correct answer to the question regarding methods of sedation in combat casualty care.