Choice A rationale

Drawing the peak level at 0930, which is 30 minutes after the start of the infusion, would be too early. The medication would not have had enough time to reach its peak level in the blood.

Choice B rationale

The peak level of gentamicin is typically evaluated 30 minutes after the completion of the infusion. Since the infusion is administered over 1 hour, the peak level would be expected to be drawn at 10001.

Choice C rationale

Drawing the peak level at 2030, which is 12 hours after the start of the infusion, would not provide an accurate representation of the peak level of gentamicin. This is because the medication would have been metabolized and excreted over this period.

Choice D rationale

Drawing the peak level at 2100, which is 12.5 hours after the start of the infusion, would not provide an accurate representation of the peak level of gentamicin. This is because the medication would have been metabolized and excreted over this period.

Choice A rationale

NSAIDs such as ibuprofen are commonly used to manage pain and inflammation. However, they are not typically the first choice for treating phantom limb pain. Phantom limb pain is a complex condition that is thought to involve both peripheral and central mechanisms.

Choice B rationale

Antipyretics such as acetaminophen are used to reduce fever and relieve mild to moderate pain. However, they are not typically used as the primary treatment for phantom limb pain. This type of pain is often resistant to common analgesics, including acetaminophen.

Choice C rationale

Narcotic analgesics such as codeine can be used to manage severe pain. However, they are not typically the first choice for treating phantom limb pain due to the risk of dependency and the fact that this type of pain often does not respond well to opioids.

Choice D rationale

Anticonvulsants such as gabapentin are often used to manage neuropathic pain, including phantom limb pain. Gabapentin works by stabilizing electrical activity in the nervous system and altering the way the nerves send messages to the brain.