Tinnitus is associated with which of the following?
Another term for ototoxicity
Enhanced sensitivity to sound
Perception of noise or ringing in the ears
Pathogenic disease caused by bacteria
The Correct Answer is C
Tinnitus is a phantom auditory perception characterized by the sensation of sound in the absence of an external stimulus. It is often a symptom of underlying pathology within the auditory pathway, ranging from the inner ear to the auditory cortex. Causes include noise-induced hearing loss, vascular disorders, and certain medications. Persistent tinnitus can significantly impact quality of life, leading to sleep disturbances, anxiety, and impaired concentration in affected individuals.
Rationale:
A. Ototoxicity refers to the toxic effect that certain drugs, like aminoglycosides or loop diuretics, have on the inner ear. While tinnitus is a common symptom of ototoxicity, the two terms are not synonymous. Ototoxicity is the causative mechanism or condition, whereas tinnitus is a specific sensory manifestation that may or may not be present in ototoxic cases.
B. Enhanced sensitivity to sound is known as hyperacusis, not tinnitus. Hyperacusis involves a lowered tolerance for everyday environmental noises, making them seem uncomfortably loud or painful. While hyperacusis and tinnitus often co-occur in patients with cochlear damage, they represent distinct physiological phenomena related to auditory processing and gain control within the brain.
C. Perception of noise or ringing in the ears is the clinical definition of tinnitus. It may be described by patients as buzzing, hissing, or whistling sounds. It results from aberrant neural activity in the auditory system that the brain interprets as sound. This definition accurately captures the subjective nature of the condition as described in the medical literature.
D. Tinnitus is a symptom, not a pathogenic disease caused by bacteria. While an ear infection (otitis media) caused by bacteria can lead to tinnitus due to pressure changes or inflammation, the tinnitus itself is not the infection. Most cases of tinnitus are related to sensorineural changes or mechanical issues rather than an active bacterial invasion of the tissues.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Step 1 is to identify the definition of percentage weight-in-volume (% w/v)
Percentage w/v = (grams of drug ÷ 100 mL of solution)
Step 2 is to convert the given concentration (mg/mL) into grams per milliliter
10 mg ÷ 1,000 = 0.01
Result at this step = 0.01 g/mL
Step 3 is to calculate the amount of drug in grams per 100 mL
(0.01 × 100) = 1
Result at this step = 1 g per 100 mL
Step 4 is to express this as a percentage
1 g per 100 mL = 1%
Result at this step = 1%
Correct Answer is A
Explanation
Eupnea refers to normal, rhythmic breathing at rest, reflecting a balance between metabolic oxygen demand and carbon dioxide elimination. The medullary rhythmicity center controls this process, adjusting the rate based on arterial blood gas tensions. Respiratory rates vary significantly by age but stabilize once physical maturity is reached. Standardized vital signs ranges are essential for identifying clinical deterioration.
Rationale:
A. 12 - 20 breaths per minute is the clinically accepted normal range for a healthy, resting adult, including a 43-year-old female. Rates within this window indicate adequate alveolar ventilation and stable acid-base balance. Deviations from this range, such as tachypnea or bradypnea, often signal underlying pathophysiological stress or compensatory mechanisms in response to metabolic or respiratory derangements.
B. 22 - 34 breaths per minute is a range considered tachypneic for an adult and is more characteristic of the normal resting rate for a toddler or young child. In a 43-year-old female, this rate would suggest respiratory distress, hypoxia, or systemic compensation for metabolic acidosis. It is not a baseline physiological state for a healthy adult woman.
C. 18 - 30 breaths per minute overlaps with the high end of normal but extends significantly into tachypnea. While 18 or 20 breaths might be observed in a stressed adult, a resting rate of 30 is indicative of acute illness. This range is commonly seen in school-aged children rather than being a standardized adult reference range for nursing assessments.
D. 10 - 18 breaths per minute is slightly lower than the standard clinical reference and may be seen in very fit athletes or during deep sleep. However, 12 is generally used as the lower threshold for safety monitoring in clinical settings. The most universally taught and tested "normal" range for adult vital signs remains the 12 to 20 breaths per minute window.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.