A 48-year-old man presents with a history of lower back pain for 3 months. When evaluating the severity of chronic low back pain, which of the following is INCORRECT about the presence or absence of radiographic abnormalities?
Abnormal findings on X-rays, MRIs and other diagnostic tests are so common that they are considered normal by age 40.
Specific imaging for the diagnosis or prognosis of chronic low back pain is not available.
Diagnostic testing is not indicated for the vast majority of low back pain presentations.
Radiographic evidence of degenerative spine changes are highly correlated with severity of pain and degree of functional impairment.
The Correct Answer is D
Choice A reason: Imaging abnormalities such as disc degeneration, bulging discs, and facet joint changes are common in asymptomatic individuals over age 40. These findings often reflect age-related changes rather than pathological pain sources.
Choice B reason: There is no single imaging modality that reliably diagnoses or predicts outcomes in chronic low back pain. Imaging is primarily used to rule out serious underlying conditions such as fractures, infections, or malignancy.
Choice C reason: Most cases of low back pain are nonspecific and self-limiting. Guidelines recommend against routine imaging unless red flags are present. Diagnostic testing is reserved for cases with concerning features or persistent symptoms.
Choice D reason: Radiographic findings do not consistently correlate with pain severity or functional impairment. Many individuals with significant imaging abnormalities are asymptomatic, while others with minimal findings may experience severe pain. This statement is incorrect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: The amygdala is primarily involved in emotional processing, particularly fear and aggression. While it may influence sleep indirectly through emotional arousal, it is not the central regulator of the sleep-wake cycle.
Choice B reason: The hypothalamus plays a critical role in regulating the sleep-wake cycle. It contains the suprachiasmatic nucleus (SCN), which serves as the body’s master circadian pacemaker. The SCN receives light input from the retina and synchronizes physiological processes, including melatonin release and sleep timing.
Choice C reason: The cerebellum is responsible for coordination of voluntary movements, balance, and motor learning. It does not have a direct role in sleep regulation.
Choice D reason: The frontal lobe is involved in executive functions, decision-making, and personality. Although sleep deprivation affects frontal lobe performance, it is not the primary center for sleep-wake regulation.
Correct Answer is C
Explanation
Choice A reason: Advanced sleep phase type is characterized by falling asleep and waking up earlier than desired. Individuals with this disorder tend to feel sleepy in the early evening and wake up very early in the morning, which is the opposite of the scenario described.
Choice B reason: Irregular sleep-wake type involves a lack of a clearly defined sleep-wake cycle. People with this disorder have fragmented sleep patterns with multiple naps throughout the 24-hour period, not a consistent delay in sleep and wake times.
Choice C reason: Delayed sleep phase type is defined by a consistent pattern of falling asleep and waking up later than desired. This disorder is common in adolescents and young adults and matches the client’s report of delayed sleep onset and waking.
Choice D reason: Non-24 sleep-wake type is typically seen in individuals who are blind and lack light perception. Their circadian rhythm does not align with the 24-hour day, leading to progressively shifting sleep times. This does not match the client’s stable but delayed sleep pattern.
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