The nurse read the patient's health history cranial nerve III oculomotor paralysis. Which of the following would the nurse expect?
Муоріа
Normal eye movement
Ptosis will be evident and no pupillary constriction.
The eye cannot look to the outside side.
The Correct Answer is C
(a) Mydriasis:
While mydriasis (dilated pupil) can be associated with cranial nerve III damage, it does not fully describe the range of symptoms expected with oculomotor paralysis. Cranial nerve III controls more functions than pupil dilation, such as eyelid elevation and certain eye movements.
(b) Normal eye movement:
Cranial nerve III paralysis would result in abnormal eye movement due to the loss of control over muscles responsible for moving the eye. Expecting normal eye movement would be incorrect since the paralysis affects the eye's ability to move properly.
(c) Ptosis will be evident and no pupillary constriction:
Cranial nerve III (oculomotor nerve) paralysis leads to ptosis (drooping eyelid) because it innervates the levator palpebrae superioris muscle. It also affects the pupillary constrictor muscles, resulting in a dilated pupil (lack of pupillary constriction), making this the most comprehensive and accurate answer.
(d) The eye cannot look to the outside side:
Inability to look to the outside (lateral movement) is typically associated with cranial nerve VI (abducens nerve) paralysis, which controls the lateral rectus muscle. Cranial nerve III primarily affects vertical and medial movements, so this is not the expected finding.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) Fish: Fish, especially fatty fish like salmon, mackerel, sardines, and trout, are rich sources of omega-3 fatty acids. Omega-3 fatty acids are essential for heart health, reducing inflammation, and supporting brain function. Including fish in the diet is highly recommended for obtaining these beneficial fats naturally.
B) Leafy green vegetables: While leafy green vegetables provide many essential nutrients, they are not significant sources of omega-3 fatty acids. They are more commonly known for their vitamins, minerals, and fiber content, which are important for overall health but do not provide the omega-3s that fish does.
C) Corn oil: Corn oil is high in omega-6 fatty acids rather than omega-3 fatty acids. While omega-6 fatty acids are also necessary for health, they should be balanced with omega-3s to maintain optimal health. Corn oil does not contribute significantly to omega-3 intake.
D) Dietary supplements: While omega-3 supplements can be a good alternative for those who do not consume enough fish, obtaining nutrients from whole foods is generally preferred for additional health benefits, such as protein and other nutrients found in fish. Supplements should be considered when dietary intake is insufficient.
Correct Answer is C
Explanation
A. Nail Beds:
While peripheral cyanosis can cause bluish discoloration of the nail beds, central cyanosis is more indicative of systemic hypoxemia and is best assessed in areas with rich blood supply, such as the oral mucosa.
B. Sclera:
The sclera is more commonly used to assess for jaundice (yellowing) rather than cyanosis. Cyanosis is not typically visible in the sclera.
C. Oral Mucosa:
Central cyanosis is most accurately assessed in areas with high vascularization, such as the oral mucosa. This area provides a clear indication of oxygenation status and can reveal hypoxemia more reliably than peripheral sites.
D. Palms:
Similar to the nail beds, the palms can show signs of peripheral cyanosis but are not the primary site for assessing central cyanosis. The oral mucosa remains the best site for this assessment.
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