350 ACTUAL EXAM QUESTIONS:
MULTIPLE CHOICE WITH ANSWERS AND
RATIONALES
Questions 1-50
Question 1
A 45-year-old male presents with sudden onset of severe chest pain radiating
to the back. Blood pressure is 100/70 mmHg in the right arm and 140/90
mmHg in the left arm. Which of the following is the most likely diagnosis?
A) Myocardial infarction
B) Pulmonary embolism
C) Aortic dissection
D) Pericarditis
E) Esophageal rupture
Correct Answer: C) Aortic dissection
Rationale: Aortic dissection typically presents with acute severe chest pain
that may radiate to the back. A key finding is blood pressure differential
between arms (>20 mmHg difference), which is highly suggestive of aortic
dissection. The pain is often described as tearing or ripping in nature.
,---
Question 2
A 28-year-old woman presents with fatigue, weight gain, cold intolerance, and
constipation. Laboratory findings show elevated TSH and low free T4. Which
of the following is the most appropriate initial treatment?
A) Levothyroxine
B) Methimazole
C) Propylthiouracil
D) Radioactive iodine
E) Thyroidectomy
Correct Answer: A) Levothyroxine
Rationale: This patient has primary hypothyroidism as evidenced by elevated
TSH and low free T4. The standard treatment is levothyroxine replacement
therapy. Methimazole and propylthiouracil are used for hyperthyroidism,
while radioactive iodine and thyroidectomy are treatments for Graves' disease
or thyroid cancer.
---
Question 3
A 62-year-old male with a history of COPD presents with worsening dyspnea,
fever, and productive cough. Chest X-ray shows a right lower lobe infiltrate.
Which of the following is the most common causative organism?
,A) Streptococcus pneumoniae
B) Mycoplasma pneumoniae
C) Haemophilus influenzae
D) Pseudomonas aeruginosa
E) Staphylococcus aureus
Correct Answer: A) Streptococcus pneumoniae
Rationale: Streptococcus pneumoniae is the most common cause of
community-acquired pneumonia in all age groups. While COPD patients are at
risk for H. influenzae and M. catarrhalis, S. pneumoniae remains the most
frequent pathogen in typical community-acquired pneumonia presentations.
---
Question 4
A 35-year-old female presents with palpitations, heat intolerance, weight loss
despite increased appetite, and fine tremor. Thyroid examination reveals
diffuse goiter. Which of the following antibodies is most likely positive?
A) Anti-TPO antibodies
B) TSH receptor antibodies
C) Anti-thyroglobulin antibodies
D) Anti-microsomal antibodies
E) Anti-nuclear antibodies
, Correct Answer: B) TSH receptor antibodies
Rationale: This patient has Graves' disease, the most common cause of
hyperthyroidism. TSH receptor antibodies (stimulating type) are the hallmark
of Graves' disease and are present in 80-100% of patients. Anti-TPO and anti-
thyroglobulin antibodies can be seen in Hashimoto's thyroiditis.
---
Question 5
A 55-year-old male with a history of hypertension presents with sudden onset
of severe headache, nausea, vomiting, and confusion. Blood pressure is
220/120 mmHg. Fundoscopic examination reveals papilledema. Which of the
following is the most appropriate immediate management?
A) Oral labetalol
B) IV nitroprusside
C) Sublingual nifedipine
D) Oral clonidine
E) Hydrochlorothiazide
Correct Answer: B) IV nitroprusside
Rationale: This patient is presenting with hypertensive emergency
characterized by severe hypertension with evidence of end-organ damage
(papilledema and encephalopathy). IV nitroprusside is the drug of choice for
immediate blood pressure reduction in hypertensive emergencies. Oral
medications are not appropriate for emergent treatment.
MULTIPLE CHOICE WITH ANSWERS AND
RATIONALES
Questions 1-50
Question 1
A 45-year-old male presents with sudden onset of severe chest pain radiating
to the back. Blood pressure is 100/70 mmHg in the right arm and 140/90
mmHg in the left arm. Which of the following is the most likely diagnosis?
A) Myocardial infarction
B) Pulmonary embolism
C) Aortic dissection
D) Pericarditis
E) Esophageal rupture
Correct Answer: C) Aortic dissection
Rationale: Aortic dissection typically presents with acute severe chest pain
that may radiate to the back. A key finding is blood pressure differential
between arms (>20 mmHg difference), which is highly suggestive of aortic
dissection. The pain is often described as tearing or ripping in nature.
,---
Question 2
A 28-year-old woman presents with fatigue, weight gain, cold intolerance, and
constipation. Laboratory findings show elevated TSH and low free T4. Which
of the following is the most appropriate initial treatment?
A) Levothyroxine
B) Methimazole
C) Propylthiouracil
D) Radioactive iodine
E) Thyroidectomy
Correct Answer: A) Levothyroxine
Rationale: This patient has primary hypothyroidism as evidenced by elevated
TSH and low free T4. The standard treatment is levothyroxine replacement
therapy. Methimazole and propylthiouracil are used for hyperthyroidism,
while radioactive iodine and thyroidectomy are treatments for Graves' disease
or thyroid cancer.
---
Question 3
A 62-year-old male with a history of COPD presents with worsening dyspnea,
fever, and productive cough. Chest X-ray shows a right lower lobe infiltrate.
Which of the following is the most common causative organism?
,A) Streptococcus pneumoniae
B) Mycoplasma pneumoniae
C) Haemophilus influenzae
D) Pseudomonas aeruginosa
E) Staphylococcus aureus
Correct Answer: A) Streptococcus pneumoniae
Rationale: Streptococcus pneumoniae is the most common cause of
community-acquired pneumonia in all age groups. While COPD patients are at
risk for H. influenzae and M. catarrhalis, S. pneumoniae remains the most
frequent pathogen in typical community-acquired pneumonia presentations.
---
Question 4
A 35-year-old female presents with palpitations, heat intolerance, weight loss
despite increased appetite, and fine tremor. Thyroid examination reveals
diffuse goiter. Which of the following antibodies is most likely positive?
A) Anti-TPO antibodies
B) TSH receptor antibodies
C) Anti-thyroglobulin antibodies
D) Anti-microsomal antibodies
E) Anti-nuclear antibodies
, Correct Answer: B) TSH receptor antibodies
Rationale: This patient has Graves' disease, the most common cause of
hyperthyroidism. TSH receptor antibodies (stimulating type) are the hallmark
of Graves' disease and are present in 80-100% of patients. Anti-TPO and anti-
thyroglobulin antibodies can be seen in Hashimoto's thyroiditis.
---
Question 5
A 55-year-old male with a history of hypertension presents with sudden onset
of severe headache, nausea, vomiting, and confusion. Blood pressure is
220/120 mmHg. Fundoscopic examination reveals papilledema. Which of the
following is the most appropriate immediate management?
A) Oral labetalol
B) IV nitroprusside
C) Sublingual nifedipine
D) Oral clonidine
E) Hydrochlorothiazide
Correct Answer: B) IV nitroprusside
Rationale: This patient is presenting with hypertensive emergency
characterized by severe hypertension with evidence of end-organ damage
(papilledema and encephalopathy). IV nitroprusside is the drug of choice for
immediate blood pressure reduction in hypertensive emergencies. Oral
medications are not appropriate for emergent treatment.
