A patient came with a right ear sensorineural hearing loss. What should the nurse expect while performing the Weber test?
lateralization of the sound/vibration to both ears equally
lateralization of the sound/vibration to the left ear.
bone conduction(BC) is greater than air conduction (AC)
lateralization of the sound/vibration to the right ear.
The Correct Answer is B
A) Lateralization of the sound/vibration to both ears equally: The Weber test is used to assess unilateral hearing loss and would not show equal lateralization in the presence of unilateral sensorineural hearing loss. Equal lateralization would suggest normal hearing or symmetrical hearing loss, which is not the case here.
B) Lateralization of the sound/vibration to the left ear: In sensorineural hearing loss, sound is perceived to lateralize to the unaffected ear. Therefore, with right ear sensorineural hearing loss, the sound will lateralize to the left ear, indicating that the left ear has better hearing capability.
C) Bone conduction (BC) is greater than air conduction (AC): This finding is characteristic of conductive hearing loss, not sensorineural hearing loss. In sensorineural hearing loss, air conduction is typically greater than or equal to bone conduction, but the Weber test focuses on lateralization rather than BC versus AC.
D) Lateralization of the sound/vibration to the right ear: If the sound were to lateralize to the affected ear in sensorineural hearing loss, it would suggest that the affected ear is hearing better, which contradicts the nature of sensorineural hearing loss. The sound will actually lateralize to the better-hearing, unaffected ear.
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Related Questions
Correct Answer is B
Explanation
A) Lateralization of the sound/vibration to both ears equally: The Weber test is used to assess unilateral hearing loss and would not show equal lateralization in the presence of unilateral sensorineural hearing loss. Equal lateralization would suggest normal hearing or symmetrical hearing loss, which is not the case here.
B) Lateralization of the sound/vibration to the left ear: In sensorineural hearing loss, sound is perceived to lateralize to the unaffected ear. Therefore, with right ear sensorineural hearing loss, the sound will lateralize to the left ear, indicating that the left ear has better hearing capability.
C) Bone conduction (BC) is greater than air conduction (AC): This finding is characteristic of conductive hearing loss, not sensorineural hearing loss. In sensorineural hearing loss, air conduction is typically greater than or equal to bone conduction, but the Weber test focuses on lateralization rather than BC versus AC.
D) Lateralization of the sound/vibration to the right ear: If the sound were to lateralize to the affected ear in sensorineural hearing loss, it would suggest that the affected ear is hearing better, which contradicts the nature of sensorineural hearing loss. The sound will actually lateralize to the better-hearing, unaffected ear.
Correct Answer is C
Explanation
A. Stiffening of the large arteries: Stiffening of the large arteries is a common age-related change and can contribute to increased systolic blood pressure. While this change can affect cardiovascular function, it does not directly increase the risk of falls as much as other factors.
B. Rise in the systolic blood pressure: An increase in systolic blood pressure often occurs with aging due to arterial stiffening. Elevated systolic blood pressure alone does not directly cause an increased risk of falls but is a part of the broader spectrum of cardiovascular changes.
C. Postural orthostatic hypotension: Postural orthostatic hypotension (OH) is characterized by a significant drop in blood pressure when a person stands up from a sitting or lying position, leading to dizziness or lightheadedness. This condition is common in older adults and significantly increases the risk of falls, as it can cause sudden dizziness and unsteadiness upon standing.
D. Decline of pacemaker cells in the sino-atrial node: The decline of pacemaker cells in the sinoatrial node can lead to bradycardia or irregular heart rhythms, which are related to cardiac function. While this can affect overall cardiovascular health, it does not directly contribute to the risk of falls as much as the sudden changes in blood pressure associated with postural orthostatic hypotension.
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