a 10 year old male is stung by a bee while playing in the yard he begins itching and develops pain swelling redness and respiratory difficulties he is
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ATI RN

ATI Pathophysiology Exam

1. A 10-year-old male is stung by a bee while playing in the yard. He begins itching and develops pain, swelling, redness, and respiratory difficulties. He is suffering from:

Correct answer: C

Rationale: The correct answer is C: Anaphylaxis. Anaphylaxis is a severe, immediate allergic reaction mediated by IgE. In this scenario, the symptoms of itching, pain, swelling, redness, and respiratory difficulties following a bee sting are indicative of anaphylaxis. Choice A, Immunodeficiency, refers to a weakened immune system's inability to protect the body from infections and diseases, which is not the case here. Choice B, Autoimmunity, involves the immune system attacking healthy cells and tissues by mistake, which is not the mechanism at play in anaphylaxis. Choice D, Tissue-specific hypersensitivity, does not accurately describe the immediate, systemic reaction seen in anaphylaxis.

2. A 10-year-old male presents to his primary care provider reporting wheezing and difficulty breathing. History reveals that both of the child's parents suffer from allergies. Which of the following terms would be used to classify the child?

Correct answer: B

Rationale: In this case, the correct term to classify the child is 'Atopic.' Atopic individuals have a genetic predisposition to developing allergic conditions, as seen in this patient with a family history of allergies. 'Desensitized' refers to reduced sensitivity to an allergen, which is not the case here. 'Hyperactive' relates to an exaggerated response, and 'Autoimmune' involves the immune system attacking its own cells, neither of which accurately describes the child's classification based on the provided history.

3. Which of the following eye disorders manifests with red eye, pain, and visual acuity changes?

Correct answer: B

Rationale: Acute closed-angle glaucoma presents with symptoms such as a red eye, severe pain, and rapid visual acuity changes due to increased intraocular pressure. This condition is considered an ophthalmologic emergency. Bacterial conjunctivitis typically presents with redness, discharge, and irritation but is not associated with severe pain or visual changes. Chronic open-angle glaucoma is usually asymptomatic until advanced stages and does not typically present with acute pain. Blepharitis involves inflammation of the eyelid margins and is characterized by redness and irritation, but it does not cause severe pain or acute visual changes.

4. When arterial blood pressure declines, the kidneys secrete a hormone to increase blood pressure and peripheral resistance. What is this hormone called?

Correct answer: A

Rationale: Renin is the correct answer. When arterial blood pressure decreases, the kidneys release renin, which triggers a series of reactions ultimately leading to an increase in blood pressure and peripheral resistance. Antidiuretic hormone (choice B) is involved in water retention, atrial natriuretic hormone (choice C) promotes sodium excretion and lowers blood pressure, and insulin (choice D) regulates glucose metabolism, not blood pressure.

5. A 17-year-old woman has come to the clinic requesting emergency contraception after having unprotected sex 24 hours ago. What medication is the clinician most likely to prescribe?

Correct answer: A

Rationale: The correct answer is A: Levonorgestrel (Plan B). Levonorgestrel is the most commonly prescribed medication for emergency contraception within 72 hours of unprotected intercourse. It is effective when taken within 72 hours after intercourse, with better efficacy the sooner it is taken. Choice B, Mifepristone (RU-486), is not indicated for emergency contraception but is used for medical abortion. Choice C, Ulipristal acetate (ella), is another option for emergency contraception that is effective up to 120 hours after unprotected intercourse. Choice D, Estradiol (Estrace), is not used for emergency contraception.

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