the first circulating immunoglobulin to appear in response to a new antigen is
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Nursing Elites

ATI RN

Pathophysiology Exam 1 Quizlet

1. Which immunoglobulin is the first to appear in response to a new antigen?

Correct answer: D

Rationale: The correct answer is IgM. IgM is the first immunoglobulin to appear in response to a new antigen. It is produced initially during the primary immune response. IgA is mainly found in mucosal areas and secretions. IgG is produced in a secondary immune response and is the most abundant immunoglobulin in the bloodstream. IgE is involved in allergic reactions and parasitic infections, not the initial response to a new antigen.

2. What property is found in clients with metastatic cancer?

Correct answer: D

Rationale: Metastatic cancer is characterized by cells that invade local tissue and overrun neighboring cells. Therefore, the correct answer is D. Choices A, B, and C are incorrect because metastatic cancer is associated with aggressive behavior where cells invade and spread to other parts of the body, rather than being well encapsulated, growing slowly, or being genetically stable.

3. A woman suffers from amenorrhea. Which of the following medications will most likely be prescribed?

Correct answer: C

Rationale: Estrogen is the correct answer. Amenorrhea, the absence of menstruation, is often due to hormonal imbalances. Estrogen plays a crucial role in regulating the menstrual cycle. Prescribing estrogen can help address these hormonal imbalances and restore menstrual cycles. Testosterone (Choice A) is not typically prescribed for amenorrhea in women as it can further disrupt hormonal balance. Follicle-stimulating hormone (Choice B) is involved in stimulating ovulation and follicle development, not the primary treatment for amenorrhea. Lactate (Choice D) is not a medication used to treat amenorrhea.

4. What is a common trigger for acute bronchospasm in asthma?

Correct answer: B

Rationale: An allergic reaction is a common trigger for acute bronchospasm in asthma patients. When individuals with asthma come in contact with allergens like pollen, dust mites, or pet dander, it can lead to an allergic reaction that triggers bronchospasm. Infections, excessive exercise, and high altitudes can exacerbate asthma symptoms, but they are not the most common trigger for acute bronchospasm in asthma patients.

5. A patient has been diagnosed with chronic renal failure. Which of the following agents will assist in raising the patient's hemoglobin levels?

Correct answer: A

Rationale: The correct answer is A: Epoetin alfa (Epogen, Procrit). Epoetin alfa is a synthetic form of erythropoietin that stimulates red blood cell production and is commonly used to treat anemia in patients with chronic renal failure. By increasing red blood cell production, epoetin alfa helps raise hemoglobin levels in these patients. Pentoxifylline (Choice B) is not indicated for raising hemoglobin levels in chronic renal failure patients; it is a peripheral vasodilator used to improve blood flow. Estazolam (Choice C) is a benzodiazepine used for treating insomnia and has no role in raising hemoglobin levels. Dextromethorphan hydrobromide (Choice D) is a cough suppressant and is not used to raise hemoglobin levels in patients with chronic renal failure.

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