A client with a history of COPD is being assessed. When the nurse percusses the client's chest, which characteristic sound is expected?
Tympany
Hyperresonance
Resonance
Dullness
The Correct Answer is B
Choice a reason:
Tympany is a drum-like, resonant sound that is typically heard over air-filled structures, such as the gastric bubble, not the chest. It is not a sound associated with the lungs, especially in the context of COPD.
Choice b reason:
Hyperresonance is an abnormally loud, lower-pitched sound than normal resonance heard over hyperinflated areas of the lung, such as in cases of COPD. This is due to the increased air content within the lungs, often because of overdistension or destruction of alveolar tissue, as seen in emphysema, a common type of COPD.
Choice c reason:
Resonance is the normal sound heard over healthy lung tissue when percussed. However, in the case of COPD, particularly emphysema, the destruction of lung tissue leads to hyperinflation and thus a hyperresonant sound rather than the normal resonance.
Choice d reason:
Dullness is heard when fluid or solid tissue replaces air in the lung or occupies the pleural space, as in the case of pneumonia or pleural effusion. This is not characteristic of COPD, where there is an increase in air due to the breakdown of alveolar walls.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is A
Explanation
Choice a reason:
The tympanic membrane, also known as the eardrum, is a critical component of the middle ear. It is a thin membrane that separates the external ear from the middle ear and vibrates in response to sound waves. These vibrations are then transmitted to the ossicles within the middle ear, which amplify and carry the sound to the inner ear.
Choice b reason:
The ear lobe is part of the external ear, not the middle ear. It is composed of soft skin and fatty tissue and does not play a role in hearing. The ear lobe serves primarily as a site for body decoration such as earrings.
Choice c reason:
The cochlea is a structure located in the inner ear. It is a spiral-shaped organ that contains the organ of Corti, the sensory organ of hearing. The cochlea converts the mechanical vibrations from the middle ear into nerve impulses that are sent to the brain.
Choice d reason:
The pinna, or auricle, is the visible part of the external ear. It is made of cartilage and skin and functions to capture sound waves and direct them into the ear canal towards the tympanic membrane.
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