D027 Advanced Pathopharmacological Foundations - Set 4 - Part 3

Correct Answer: Pretibial edema

Pretibial myxedema with non-pitting edema occurs in severe hypothyroidism from mucopolysaccharide deposition in tissues.
Option a is incorrect because hypothyroidism causes delayed reflexes, not the hyperreflexia described.
Option c is incorrect because hypothyroidism causes pallor and cold skin, not facial flushing.
Option d is incorrect because hypothyroidism causes weight gain from decreased metabolism, not loss.

Correct Answer: Fifteen minutes prior

Short-acting bronchodilators given fifteen minutes before exercise optimally prevent exercise-induced bronchospasm in asthmatic patients.
Option a is incorrect because immediate use doesn't allow medication to reach peak effect before exercise.
Option c is incorrect because one hour is too early; medication effect may wane during exercise.
Option d is incorrect because two hours far exceeds optimal timing for preventing exercise-induced symptoms.

Correct Answer: ACTH hormone

Ectopic ACTH production by small cell lung cancer causes Cushing syndrome with cortisol excess symptoms.
Option a is incorrect because thyroid hormone excess causes hyperthyroidism symptoms, not Cushing syndrome features.
Option b is incorrect because growth hormone excess causes acromegaly, not the Cushing syndrome described.
Option d is incorrect because prolactin excess causes galactorrhea and amenorrhea, not Cushing syndrome.

Correct Answer: Frequent diaper changes

Frequent diaper changes minimize skin contact with urine and stool, preventing the moisture causing dermatitis.
Option a is incorrect because prophylactic antibiotics aren't needed; basic hygiene prevents most diaper rash.
Option c is incorrect because powder can cake and worsen irritation; it's not the primary prevention.
Option d is incorrect because plastic pants trap moisture, worsening rather than preventing diaper dermatitis.

Correct Answer: Fava beans

Fava beans contain oxidative compounds triggering severe hemolytic crisis in G6PD deficiency requiring strict avoidance.
Option a is incorrect because while vitamin C should be limited, citrus doesn't cause severe hemolysis.
Option c is incorrect because dairy products are safe in G6PD deficiency without hemolytic risk.
Option d is incorrect because red meat doesn't contain oxidative triggers for G6PD hemolytic crisis.

Correct Answer: Vaccination

Varicella vaccination of susceptible contacts within three to five days prevents or modifies chickenpox infection.
Option a is incorrect because antibiotics don't prevent viral chickenpox transmission between household members.
Option b is incorrect because household isolation is impractical and less effective than post-exposure vaccination.
Option d is incorrect because antivirals treat infected individuals but don't prevent transmission to others.

Correct Answer: Physical ambulation

Late-stage Alzheimer's causes loss of physical abilities including walking, sitting, and swallowing requiring total care.
Option a is incorrect because memory loss occurs earlier; late stage involves complete cognitive and physical decline.
Option c is incorrect because social withdrawal happens in middle stages before complete physical decline.
Option d is incorrect because work inability occurs early; late stage involves basic physical function loss.

Correct Answer: Thirty to fifty-nine

Stage three chronic kidney disease shows GFR between thirty and fifty-nine indicating moderate function reduction.
Option a is incorrect because GFR above sixty indicates mild or no kidney disease, not stage three.
Option c is incorrect because fifteen to twenty-nine indicates stage four severe reduction, not stage three.
Option d is incorrect because below fifteen indicates kidney failure requiring dialysis, not stage three.

Correct Answer: Aminoglycosides

Aminoglycoside antibiotics worsen neuromuscular blockade in myasthenia gravis, potentially causing respiratory failure requiring avoidance.
Option a is incorrect because penicillins are generally safe in myasthenia gravis without neuromuscular effects.
Option c is incorrect because cephalosporins don't significantly affect neuromuscular transmission in myasthenia patients.
Option d is incorrect because macrolides are safer than aminoglycosides for myasthenia gravis patients.

Correct Answer: Transportation access

Transportation barriers prevent elderly patients from reaching pharmacies and appointments, directly impacting medication adherence rates.
Option b is incorrect because housing quality affects health indirectly but not medication access specifically.
Option c is incorrect because education influences understanding but transportation more directly affects pharmacy access.
Option d is incorrect because social isolation affects mental health but transportation directly impacts medication acquisition.