Question

When checking a child's trochlear nerve function, the nurse should perform which data collection technique?

a. Check for pupillary response to light
b. Assess extraocular eye movements
c. Evaluate the gag reflex
d. Test visual acuity

Answer 1

To assess the function of a child's trochlear nerve, the nurse should test extraocular eye movements by having the child follow a visual target through their field of vision, ensuring smooth coordination and absence of diplopia.

Step-by-step explanation:

When checking a child's trochlear nerve function, the nurse should perform the data collection technique of assessing extraocular eye movements. The trochlear nerve controls the superior oblique muscle, which is one of the extraocular muscles involved in eye movement. Testing conjugate gaze can be done by having the patient follow a visual target, such as a pen tip, through their visual field. This test is not only essential for assessing the function of the trochlear nerve but also for evaluating the coordination with other nerves involved in eye movements such as the oculomotor and abducens nerves. The examiner watches for smooth, coordinated movements and the absence of diplopia or double vision, which may indicate dysfunction.