Physician Assistant Physician Assistant 3

Question 1

A 35-year-old female presents with weight gain, cold intolerance, constipation, and dry skin. TSH is elevated and free T4 is low. What is the most appropriate treatment?

Accepted Answer

Levothyroxine

Answer

Elevated TSH with low free T4 indicates primary hypothyroidism, treated with levothyroxine (synthetic T4) replacement therapy.

Question 2

Which maneuver is used to diagnose benign paroxysmal positional vertigo (BPPV)?

Accepted Answer

Dix-Hallpike maneuver

Answer

The Dix-Hallpike maneuver repositions the head to provoke nystagmus and vertigo, confirming the diagnosis of BPPV involving the posterior semicircular canal.

Question 3

A 70-year-old male with a history of atrial fibrillation is found unresponsive with right-sided weakness. CT head shows no hemorrhage. What is the most appropriate immediate intervention?

Accepted Answer

IV alteplase (tPA)

Answer

In the absence of contraindications and within the therapeutic window, IV alteplase (tPA) is the standard of care for acute ischemic stroke.

Question 4

A newborn is noted to have a continuous 'machine-like' murmur at the left upper sternal border. What is the most likely congenital heart defect?

Accepted Answer

Patent ductus arteriosus

Answer

A continuous machine-like murmur at the left upper sternal border is pathognomonic for patent ductus arteriosus (PDA).

Question 5

Which of the following lab findings is most consistent with iron deficiency anemia?

Accepted Answer

Low ferritin, elevated TIBC, microcytic RBCs

Answer

Iron deficiency anemia is characterized by low ferritin (depleted stores), elevated TIBC (the body compensates by upregulating transferrin), and microcytic, hypochromic RBCs.

Physician Assistant Practice Test

Physician Assistant Practice Test

Physician Assistant Physician Assistant 3