A 25-year-old woman presents to an urgent care center following a bee sting while at a picnic with her friends. She immediately developed a skin rash and swelling over her arm and face. She endorses diffuse itching over her torso. Past medical history is significant for a mild allergy to pet dander and ragweed. She occasionally takes oral contraceptive pills and diphenhydramine for her allergies. Family history is noncontributory. Her blood pressure is 119/81 mm Hg, heart rate is 101/min, respiratory rate is 21/min, and temperature is 37°C (98.6°F). On physical examination, the patient has severe edema over her face and severe stridor with inspiration at the base of both lungs. Of the following options, this patient is likely experiencing which of the following hypersensitivity reactions?
AType 2 - cytotoxic hypersensitivity reaction
BType 1 - anaphylactic hypersensitivity reaction
CBoth A & B
DType 4 - cell mediated (delayed) hypersensitivity reaction
EType 3 - immune complex mediated hypersensitivity reaction
A 5-year-old girl presents to the emergency room with acute airway obstruction. Physical examination shows cough, episodic wheezing, and excess mucus production. Increased quantities of which of the following would predispose the child to extrinsic asthma:
AKupffer cells
BTh17 lymphocytes
CTh1 lymphocytes
DTreg lymphocytes
ETh2 lymphocytes
A 7-year-old male is admitted to the hospital with his fourth episode of wheezing and dyspnea. His symptoms are exacerbated by mold and pollen. Which of the following is most likely to be observed in this patient?
ANormal FEV1/FVC
BNormal FEV1
CAbnormal chest radiograph
DGround glass opacities on chest CT
ESputum eosinophils
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