A patient is diagnosed with left ear unilateral sensorineural hearing loss. During the performance of the Weber test, the nurse expects lateralization of the sound/vibration to the:

Left temporal bone
Both ears equally
Right ear
Left ear
The Correct Answer is C
Choice a reason:
The left temporal bone would be the expected site of lateralization for sound in a Weber test if the patient had conductive hearing loss in the left ear. However, with unilateral sensorineural hearing loss, the sound typically lateralizes to the opposite ear, which is the ear with better hearing.
Choice b reason:
Lateralization to both ears equally during the Weber test would suggest either normal hearing or symmetrical hearing loss. In the case of unilateral sensorineural hearing loss, the sound is not perceived as equal in both ears because the affected ear does not hear as well as the unaffected ear.
Choice c reason:
In a patient with unilateral sensorineural hearing loss in the left ear, the Weber test will lateralize to the right ear, which is the ear with normal hearing. This occurs because the inner ear on the affected side is not able to transmit the sound as effectively as the unaffected side, making the sound seem louder in the ear with better hearing.
Choice d reason:
Lateralization to the left ear in the Weber test would indicate conductive hearing loss in the left ear, not sensorineural hearing loss. In sensorineural hearing loss, the sound vibrates to the ear with better cochlear function, which would be the right ear in this case.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason:
Discussing reactions to allergens typically focuses on environmental or food triggers that may cause allergic reactions. While it's important to understand a client's allergies, this topic is not closely related to alcohol use, which has different implications for health and lifestyle choices.
Choice B reason:
Asking about alcohol use naturally follows the discussion about cigarette smoking because both involve substance use and have potential health risks. It allows the nurse to transition smoothly from one lifestyle factor to another, which can impact the client's overall health. This approach also helps in creating a comprehensive picture of the client's habits that may contribute to or affect their current health status.
Choice C reason:
Reviewing current medications is an essential part of the health history, as it can reveal potential interactions with alcohol. However, it might be more appropriate to ask about alcohol use after discussing other lifestyle habits such as smoking, as they are more directly related. Once the client's substance use habits are established, the nurse can then discuss how these might interact with prescribed medications.
Choice D reason:
Asking about previous surgeries is important for understanding a client's medical history, but it is not directly related to the client's current lifestyle habits like alcohol use. Therefore, it would be more natural to ask about alcohol use in the context of other substance use discussions rather than after surgical history.
Correct Answer is C
Explanation
Choice A reason:
Peripheral vision is the ability to see objects and movement outside of the direct line of vision. This type of vision is assessed using different methods, such as confrontation visual field testing, where the examiner moves objects into the patient's side vision from different angles. Standing 20 feet away from a chart would not be the appropriate method to assess peripheral vision.
Choice B reason:
The assessment of external eye structures involves examining the physical appearance and condition of the eyelids, sclera, conjunctiva, and surrounding areas. This is typically done at a close range and does not require the patient to stand at a distance from a chart. The nurse would inspect these structures directly, often with the aid of a penlight for better visibility.
Choice C reason:
Distant vision is the ability to see objects far away, and it is what the nurse is preparing to assess when the client is asked to stand 20 feet from a chart. This distance is standard for the Snellen eye chart, which is used to measure visual acuity. The chart has rows of letters that decrease in size, and the patient is asked to read the smallest line of letters they can see clearly. The Snellen chart is the most common method used by eye doctors to measure visual acuity.
Choice D reason:
Near vision is the ability to see objects that are close to the eyes clearly. It is assessed using different charts, such as the Jaeger eye chart, which contains blocks of text in various type sizes. The patient is asked to read the text at a close range, typically around 14 inches, not 20 feet. Therefore, standing 20 feet away from a chart would not be the method to assess near vision.
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