A 3-year-old girl has a presentation that meets criteria for autism spectrum disorder. However, a careful history identifies that her head growth began to decelerate around 8 months. What diagnosis will she receive?
Autism spectrum disorder
Rett syndrome
Global developmental delay
Pervasive developmental delay
The Correct Answer is B
Choice A reason: Autism spectrum disorder involves social communication deficits and restricted/repetitive behaviors, but does not typically include deceleration of head growth after normal early development.
Choice B reason: This is correct. Rett syndrome, primarily affecting females, is characterized by normal early development followed by regression, deceleration of head growth (microcephaly), loss of purposeful hand skills, and social and motor impairments. The head growth deceleration at 8 months supports Rett syndrome over ASD.
Choice C reason: Global developmental delay is a diagnosis for children under 5 with delays in multiple developmental domains but does not explain the specific pattern of regression and head growth deceleration seen here.
Choice D reason: Pervasive developmental disorder is an outdated term encompassing ASD and similar conditions; it would not capture the distinctive features of Rett syndrome in this scenario.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Alprazolam is a short-acting benzodiazepine that carries high risk for dependence. Using it as monotherapy without long-term management is not recommended.
Choice B reason: This is the correct answer. SSRIs are first-line long-term treatment for generalized anxiety disorder, and low-dose benzodiazepines such as clonazepam can be used short-term for rapid symptom relief during initiation of SSRIs. This approach balances immediate relief with safe long-term management.
Choice C reason: While starting an SSRI alone is reasonable, it may not provide immediate symptom relief, which the patient is requesting. Short-term adjunctive therapy is often needed initially.
Choice D reason: Psychotherapy alone is effective but does not meet the patient’s request for rapid symptom control. Combining therapy with pharmacologic treatment is more appropriate in this scenario.
Correct Answer is A
Explanation
Choice A reason: Atrial fibrillation typically presents with a rapid, irregularly irregular pulse, often exceeding 100 bpm. A rate of 157 indicates tachyarrhythmia consistent with AF.
Choice B reason: Hypotension may result from AF complications but is not diagnostic by itself.
Choice C reason: Bradycardia (pulse 43) is inconsistent with typical AF, which is usually tachyarrhythmic unless on rate-controlling medications.
Choice D reason: Hypertension alone does not confirm AF; the irregular tachycardic pulse is the key finding.
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