A school nurse is performing vision screenings for a group of students to check ocular alignment using the cover test.
Which of the following instructions should the nurse give to the students?
"Read the words on this paper while I quickly move a cover from one eye to the other.”.
"Look straight ahead and try not to blink while I shine this light into your eyes.”.
"Focus on the finger I am holding up while I cover one eye, and then the other.”.
"Cover your left eye and use your right eye to read the letters I point to on this chart.”.
The Correct Answer is C
Choice A rationale
This instruction describes part of a different vision screening test, likely the alternate cover test or a version of it, which assesses for phorias (latent strabismus) by observing eye movement after the cover is removed. The cover test assesses tropias (manifest strabismus) by observing the uncovered eye. The instruction is not suitable for the standard cover test, which focuses on observing the covered eye as it is uncovered.
Choice B rationale
This describes the Hirschberg test, also known as the corneal light reflex test, which is used to screen for strabismus by observing the location of the light reflection on the corneas. This is a quick screening tool, but it does not provide the detailed assessment of eye movement and alignment that the cover test provides. Therefore, the instruction is inaccurate for a cover test procedure.
Choice C rationale
The cover test is a diagnostic procedure used to detect a tropia or misalignment of the eyes. The client is instructed to fixate on a target, typically an object or finger, while one eye is occluded. The nurse observes the uncovered eye for any movement, which would indicate a manifest deviation. Then, the nurse uncovers the eye and observes for any refixation movement, indicating the presence of a tropia.
Choice D rationale
This instruction describes a component of the Snellen eye chart test, which is used to measure visual acuity, not ocular alignment. Visual acuity testing assesses the sharpness of vision by having the client read letters of various sizes from a standardized distance. This is a separate and distinct assessment from the cover test, which specifically evaluates how the eyes work together.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
While financial concerns are stressful, they represent a concrete problem to be solved and don't necessarily reflect a loss of personal agency or autonomy. This statement indicates worry about a specific external resource rather than a global feeling of powerlessness. The client retains control over how they manage their finances, even if the situation is challenging.
Choice B rationale
Expressing gratitude, or a perceived lack thereof, points toward an emotional or spiritual struggle. The client feels they are not meeting an internal standard, but this is a self-evaluation, not a statement of being controlled by external forces. They still have the ability to choose how they feel and how they express their emotions.
Choice C rationale
This statement reflects a spiritual or existential crisis, questioning the fairness of their situation. It is a search for meaning and a struggle with the concept of justice. The client is reflecting on past actions and their current circumstances, but this does not directly indicate a loss of control over their present life.
Choice D rationale
This statement directly addresses a lack of personal autonomy and agency. A feeling of "not having much say" is a direct expression of being controlled by external forces, which is a hallmark of the psychological experience of loss of control. This feeling is particularly common in terminal illness where the disease process dictates many outcomes.
Correct Answer is A
Explanation
Choice A rationale
Facial asymmetry is a hallmark clinical manifestation of a cerebrovascular accident (CVA), or stroke. It results from damage to the motor cortex in the brain, which controls the muscles of the face. This damage can lead to a drooping or weakness on one side of the face, an essential component of the FAST assessment (Face, Arm, Speech, Time).
Choice B rationale
Chest pain is a primary symptom of a myocardial infarction (MI), a heart attack, not a cerebrovascular accident. It indicates a lack of blood flow to the heart muscle. While both conditions involve cardiovascular compromise, their clinical presentations and underlying pathophysiology are distinct and involve different organ systems.
Choice C rationale
Shortness of breath is a common symptom of various respiratory and cardiac conditions, such as congestive heart failure, asthma, or a pulmonary embolism. While it may sometimes accompany a stroke if the brainstem is affected, it is not a primary or specific manifestation and does not reliably indicate a CVA.
Choice D rationale
Cloudy urine can be a sign of a urinary tract infection, dehydration, or kidney stones. It is related to the genitourinary system and has no direct pathophysiological link to a cerebrovascular accident. A CVA involves a disruption of blood supply to the brain, which does not typically manifest with changes in urine appearance.
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