Question

With a heady injury - Maintain CPP by doing what with MAP & HOB?

a) Increasing MAP and elevating HOB
b) Decreasing MAP and lowering HOB
c) Increasing MAP and lowering HOB
d) Decreasing MAP and elevating HOB

Answer 1

To maintain cerebral perfusion pressure (CPP) in the context of a head injury, the mean arterial pressure (MAP) should be decreased and the head of bed (HOB) position should be lowered.

Step-by-step explanation:

The correct answer is b) Decreasing MAP and lowering HOB. In the context of a head injury, CPP (cerebral perfusion pressure) needs to be maintained at an appropriate level to ensure adequate blood flow to the brain. CPP is calculated by subtracting the mean arterial pressure (MAP) from the intracranial pressure (ICP).

When a head injury occurs, there is an increased risk of increased ICP, which can be detrimental to brain perfusion. To maintain CPP, it is necessary to decrease MAP (mean arterial pressure) and lower the HOB (head of bed) position. This helps reduce the pressure inside the brain and maintain adequate perfusion.

Decreasing MAP involves measures such as medication administration and reducing fluid volume. Lowering the HOB involves positioning the patient in a more reclined position, which helps to reduce pressure on the brain.