Which clinical intervention is NOT typically performed to reduce ICP?

Performing a lumbar puncture is typically not used to reduce intracranial pressure (ICP) due to the risk of herniation and potential complications. When ICP is elevated, especially in conditions like traumatic brain injury, brain tumors, or hemorrhages, a lumbar puncture can inadvertently cause the brain to shift downward, as the removal of cerebrospinal fluid (CSF) could create a pressure gradient that may lead to serious complications.

In contrast, the other interventions listed are standard practices for managing elevated ICP. Elevating the head of the bed can help improve venous drainage from the brain, thus potentially lowering ICP. Administering medications, such as diuretics or sedatives, can help control cerebral edema or reduce brain activity, contributing to lower ICP levels. Evacuating hematomas is a surgical intervention aimed at removing fluid collections that contribute to increased pressure within the cranial cavity. Each of these interventions aims directly at alleviating the pressure and protecting brain function, whereas a lumbar puncture does not serve this purpose in the context of elevated ICP.