The nurse prepares to assess the patient's cranial nerves. Which tool is necessary to assess cranial nerve (CN) III (oculomotor)?
Otoscope
Penlight
Cotton ball
Lavender
The Correct Answer is B
A. An otoscope is used to examine the ear canal and tympanic membrane, not to assess cranial nerve III. This tool is more relevant for assessing cranial nerve VIII (vestibulocochlear), which is responsible for hearing and balance.
B. A penlight is used to assess CN III (oculomotor) by evaluating the pupil's response to light and the ability to move the eye. This nerve controls most of the eye's movements, including constriction of the pupil in response to light.
C. A cotton ball is used to test the sensory function of cranial nerve V (trigeminal), which is responsible for facial sensation. It is not used for assessing CN III.
D. Lavender or other scents may be used to test CN I (olfactory), responsible for the sense of smell, but it is not related to CN III, which governs eye movements and pupil reactions.
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Correct Answer is A
Explanation
A. The initial assessment describes a state of confusion where the patient is awake but experiencing forgetfulness and difficulty following commands. The subsequent assessment indicates lethargy, as the patient is now sleepy and has slow responses, which aligns with the definitions of confusion and lethargy.
B. While confusion is present in the first assessment, stupor describes a state of near-unconsciousness, which does not match the second assessment.
C. Although lethargy is appropriate for the second assessment, obtunded refers to a state where the patient is less aware and has difficulty arousing, which is not accurately described here.
D. The first assessment indicates confusion, but the patient is not fully conscious as described in the second assessment, which does not align with this option.
Correct Answer is C
Explanation
A. A history of Roux-en-Y gastric bypass surgery is not a direct risk factor for colorectal cancer; in some cases, it may reduce risk due to weight loss and dietary changes.
B. A high fiber, low fat diet is considered protective against colorectal cancer rather than a risk factor.
C. A personal history of inflammatory bowel disease, such as ulcerative colitis or Crohn's disease, significantly increases the risk for developing colorectal cancer due to chronic inflammation and cellular changes in the colon.
D. Having a distant relative with colorectal cancer may increase risk, but the personal history of inflammatory bowel disease is a stronger risk factor warranting emphasis in teaching.