When inspecting a patient's eyes, the nurse assesses the presence of cranial nerve III (oculomotor nerve) by observing the eyelids open and close bilaterally.
What other technique does a nurse use to test the function of this cranial nerve?
Visual acuity.
Peripheral vision.
Presence of the red reflex.
Pupillary constriction to light.
The Correct Answer is D
Choice A rationale
Visual acuity tests assess the clarity of vision and the ability to discern letters or numbers at a set distance. It is used to test the function of cranial nerve II (optic nerve) rather than cranial nerve III (oculomotor nerve). Testing visual acuity involves using eye charts and assessing each eye separately.
Choice B rationale
Peripheral vision tests evaluate the ability to see objects outside the direct line of vision and are used to test the function of cranial nerve II (optic nerve). Peripheral vision assessment helps in diagnosing conditions like glaucoma but does not test the function of cranial nerve III.
Choice C rationale
The presence of the red reflex is assessed by looking into the eye with an ophthalmoscope to check for abnormalities in the eye's posterior segment. It is not related to the function of cranial nerve III but rather indicates healthy eye structures, including the retina and optic nerve (cranial nerve II).
Choice D rationale
Pupillary constriction to light is a direct test of cranial nerve III function. The oculomotor nerve controls the constriction of the pupil in response to light. By shining a light into the eyes and observing the pupils' response, the nurse can assess the integrity of cranial nerve III.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Atrial depolarization is represented by the P wave on an ECG, not the QRS wave. This phase involves the electrical activation and contraction of the atria, which precedes ventricular contraction.
Choice B rationale
Ventricular repolarization is represented by the T wave, not the QRS complex. The T wave signifies the ventricles returning to their resting state.
Choice C rationale
Atrial repolarization generally occurs during the QRS complex, but it is not represented by it. The electrical activity of atrial repolarization is masked by the more significant ventricular depolarization signal of the QRS complex.
Choice D rationale
The QRS complex on an ECG represents ventricular depolarization, which is the electrical activation leading to the contraction of the ventricles. This is the correct answer as it accurately describes the QRS wave’s significance. .
Correct Answer is B
Explanation
Choice A rationale
Alcohol consumption, obesity, diabetes, stress, and high cholesterol are all significant risk factors for heart disease. However, smoking is not listed in this choice. Smoking is a major risk factor for heart disease as it damages the lining of the arteries, leads to the build-up of fatty deposits (atherosclerosis), and increases the risk of heart attacks and strokes.
Choice B rationale
Smoking, hypertension, obesity, diabetes, and high cholesterol are all major risk factors for heart disease. Smoking contributes to the development of atherosclerosis and increases the risk of heart attacks. Hypertension, or high blood pressure, strains the heart and blood vessels, increasing the risk of heart disease. Obesity is linked to multiple risk factors, including high cholesterol, diabetes, and hypertension. Diabetes can cause damage to blood vessels and increase the risk of cardiovascular complications. High cholesterol contributes to the formation of plaques in the arteries, leading to atherosclerosis.
Choice C rationale
Personality type is not a major risk factor for heart disease. Although certain personality traits, such as Type A behavior (characterized by competitiveness, urgency, and hostility), have been associated with increased stress and a higher risk of cardiovascular events, they are not considered primary risk factors. High cholesterol, diabetes, and smoking are significant risk factors, but this choice does not include hypertension or obesity, which are also crucial risk factors for heart disease.
Choice D rationale
Family history, hypertension, stress, and age are important risk factors for heart disease, but this choice does not include some key factors such as smoking, obesity, or diabetes. Family history of heart disease can indicate a genetic predisposition to cardiovascular conditions. Hypertension and stress contribute to cardiovascular risk, and age is a non-modifiable risk factor as the risk of heart disease increases with age. However, the absence of smoking, obesity, and diabetes makes this choice less comprehensive in assessing heart disease risk factors. .
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