A school nurse is using the Weber's test to check a child's hearing acuity.
Which of the following actions should the nurse take?
Measure the amount of time the child can hear the sound.
Obtain a tympanogram reading prior to initiating the test.
Place a vibrating tuning fork on the top of the child's head.
Hold a vibrating tuning fork 1 to 2 cm (0.4 to 0.8 in) from the child's ears.
The Correct Answer is C
Choice A rationale:
Measuring the amount of time the child can hear the sound is not the correct action when performing Weber's test. Weber's test is used to assess hearing acuity and lateralization. In this test, a vibrating tuning fork is placed in the middle of the patient's forehead, and the patient is asked if the sound is heard equally in both ears or if it is louder in one ear. This helps identify whether there is a conductive or sensorineural hearing loss. The duration of hearing the sound is not relevant to this test.
Choice B rationale:
Obtaining a tympanogram reading is not necessary before initiating Weber's test. Tympanometry assesses the movement of the eardrum in response to changes in air pressure and can help diagnose conditions like middle ear effusion or eustachian tube dysfunction. However, Weber's test focuses on lateralization of sound and does not require tympanogram readings.
Choice C rationale:
Placing a vibrating tuning fork on the top of the child's head is the correct action for performing Weber's test. By doing so, the nurse can assess whether the sound is perceived equally in both ears or if it is lateralized to one ear. If the sound is lateralized, it can provide valuable information about the type of hearing loss the child may have, whether it's conductive or sensorineural.
Choice D rationale:
Holding a vibrating tuning fork 1 to 2 cm (0.4 to 0.8 in) from the child's ears is not the correct technique for Weber's test. Placing the tuning fork directly on the patient's forehead is essential for accurate assessment. Holding it close to the ears can lead to misinterpretation of the test results.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Providing postmortem care for a client who has recently died does not require immediate intervention by the charge nurse, as it is a standard nursing responsibility to provide postmortem care with dignity and respect to the deceased client. The AP can proceed with this task independently.
Choice B rationale:
Performing a simple dressing change on a client's foot is within the scope of practice for an assistive personnel (AP) and does not require immediate intervention by the charge nurse, assuming the AP is competent and trained to perform this task.
Choice C rationale:
Washing hands with alcohol-based hand rub after bathing a client who has Clostridium difficile is not sufficient. Alcohol is not effective against C. Difficile spores.
Choice D rationale:
Clean gloves are sufficient for this task, as they do provide adequate protection against the transmission of infections.
Correct Answer is A
Explanation
Choice A rationale:
Irritability is a common withdrawal symptom in newborns exposed to cocaine during pregnancy. Cocaine exposure can lead to irritability, restlessness, and difficulty in consoling the newborn.
Choice B rationale:
Hypotonicity, or decreased muscle tone, is not a common finding associated with cocaine exposure in newborns. Cocaine exposure more commonly results in hypertonicity, where the muscles are tense and rigid.
Choice C rationale:
Decreased auditory startle response is not a typical finding associated with cocaine exposure. Newborns exposed to cocaine may have an exaggerated startle response, which is the opposite of the expected finding in this case.
Choice D rationale:
Increased head circumference is not a characteristic finding associated with cocaine exposure. Cocaine exposure is more likely to cause growth restriction, low birth weight, and microcephaly (small head size) in newborns.
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