Thrombocytopenia:
Is a platelet count greater than 100,000/mm³
Is a platelet count less than 150,000/mm³
Is the cause of increased clotting
Is due to increased platelet production
The Correct Answer is B
Choice A reason: Thrombocytopenia is a low platelet count (<150,000/mm³), not >100,000/mm³, which may still be normal or low-normal. A count <150,000 defines the condition, so this is incorrect.
Choice B reason: Thrombocytopenia is defined as a platelet count less than 150,000/mm³, increasing bleeding risk. This accurately describes the condition, making it the correct choice for the definition.
Choice C reason: Thrombocytopenia causes bleeding, not increased clotting, due to low platelets. Clotting issues arise from high platelets, so this is incorrect for thrombocytopenia’s effects.
Choice D reason: Thrombocytopenia results from decreased platelet production or increased destruction, not increased production. Low platelet count defines it, so this is incorrect for the cause.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","D","E"]
Explanation
Choice A reason: Loss of short-term memory is a hallmark of Alzheimer’s disease, as seen in the patient’s difficulty recalling recent events. This reflects early hippocampal damage, impairing new memory formation, making it a correct clinical manifestation for this diagnosis.
Choice B reason: Alzheimer’s disease is the most likely diagnosis, given progressive memory loss, word-finding difficulties, and an MMSE score of 20/30 in a 65-year-old. These symptoms align with Alzheimer’s neurodegenerative pattern, making this the correct diagnosis.
Choice C reason: Vascular dementia typically presents with stepwise cognitive decline and focal neurological signs, often with vascular risk factors. The patient’s gradual memory loss without such history better fits Alzheimer’s, making vascular dementia incorrect.
Choice D reason: Word-finding difficulties, as exhibited, are a hallmark of Alzheimer’s, reflecting language cortex involvement. This progressive aphasia, common in early stages, impairs communication, making it a correct clinical manifestation for this patient.
Choice E reason: Disorientation to time and place, though not explicitly stated, is a hallmark of Alzheimer’s, often emerging as memory declines. Given the patient’s MMSE score and symptoms, this is likely, making it a correct manifestation.
Correct Answer is B
Explanation
Choice A reason: Latent phase follows seroconversion, not precedes infection. The correct sequence—exposure, infection, seroconversion, AIDS—reflects HIV progression. This option misorders the phases, making it incorrect for AIDS development.
Choice B reason: AIDS progresses through exposure (virus contact), infection (HIV enters body), seroconversion (antibody detection), and AIDS (advanced disease). This sequence accurately describes the disease’s history, making it correct.
Choice C reason: Symptomatic AIDS is not a distinct phase; AIDS itself is symptomatic. The standard progression includes exposure, infection, seroconversion, and AIDS, so “symptomatic AIDS” is incorrect.
Choice D reason: Window phase is part of seroconversion, not separate, and acute phase is early infection. The sequence—exposure, infection, seroconversion, AIDS—is clearer, so this is incorrect.
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