Author Question: The nurse is assessing pupil size and reaction to light in a child with a cervical neck injury. ... (Read 117 times)

09madisonrousseau09 · **on:** Jun 27, 2018

The nurse is assessing pupil size and reaction to light in a child with a cervical neck injury. Which cranial nerve is the nurse assessing in this patient?

A) II (optic)
B) III (oculomotor)
C) IV (trochlear)
D) VI (abducens)

Question 2

The nurse is caring for a child with a closed head injury. The child's blood pressure is 120/58 mmHg, and intracranial pressure is 16 mmHg.

What is this child's cerebral perfusion pressure? (Enter numeric value only. Calculate to the nearing hundredth decimal point.)

Smiles0805 · **Reply #1 on:** Jun 27, 2018

Answer to Question 1

B
Feedback:
Cranial nerve III (oculomotor) provides motor control and sensation for eye muscles and the upper eyelid. To determine the functioning of this nerve, the nurse would assess pupillary size and reaction to light. Cranial nerve II controls vision. Cranial nerve IV controls the movement of major eye muscles. Cranial nerve VI controls the movement and muscle sense of the eye.

Answer to Question 2

84.67
Feedback:
Cerebral perfusion pressure is calculated by subtracting the mean intracranial pressure from the mean arterial pressure or MAP ICP = CPP. To calculate mean arterial pressure, the nurse should subtract the diastolic blood pressure from the systolic blood pressure and divide the result by 3 and then add that sum to 80 . For this patient, the MAP would be calculated as being (120 58) / 3 + 80 = 100.67 . To calculate the cerebral perfusion pressure, take the value of the mean arterial pressure and subtract the child's intracranial pressure or 100.67 16 = 84.67 . The child's cerebral perfusion pressure is 84.67.