The nurse caring for a client who has experienced a brain abscess understands the importance of maintaining medium arterial blood pressure (MAP) since it:
1. Identifies risk for tissue ischemia.
2. Affects diastolic blood pressure.
3. Determines intracranial pressure.
4. Affects systolic blood pressure.
Identifies risk for tissue ischemia.
Rationale: MAP is considered to be the perfusion pressure seen by organs in the body. It is believed that a MAP that is greater than 60 mmHg is enough to sustain the organs of the average person. If the MAP falls significantly below this number for an appreciable time, the end organ will not get enough blood flow, and will become ischemic. MAP does not determine ICP. MAP does not affect, but rather is affected by, systolic and diastolic blood pressure.
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