USMLE-Rx Step 1 Practice Q's

USMLE-Rx Step 1 Qmax Challenge #3390

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Check out today’s Step 1 Qmax Question Challenge.

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USMLE-Rx Step 1 Qmax Challenge #3390A 27-year-old woman presents to her primary care physician complaining of feeling “under the weather” for the past 2 weeks. Her history is remarkable only for previously diagnosed mitral valve prolapse. On examination, her temperature is 37.8°C (100°F). The patient has erythematous palms and painful, small lesions on her finger pads. The results of an ophthalmologic examination are shown in the image.

What is the most likely pathogen causing this woman’s symptoms?

A. Group B streptococcus
B. Haemophilus influenzae
C. Staphylococcus aureus
D. Streptococcus pyogenes
E. Streptococcus viridans

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USMLE-Rx Step 1 Qmax Challenge #3379

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USMLE-Rx Step 1 Qmax Challenge #3379An 89-year-old woman is brought to the clinic after suffering from a number of recent minor falls and episodes of confusion. MRI of the brain reveals a mass localized to a convexity of the left hemisphere. The patient declines treatment and dies a few months later. An autopsy slide obtained from the patient’s brain lesion is shown in the image.

From which type of cell does the tumor seen here typically arise?

A. Arachnoid cells
B. Astrocytes
C. Melanocytes
D. Neurons
E. Oligodendrocytes

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This practice question is an actual question from the USMLE-Rx Step 1 test bank. For more USMLE Step 1 prep, subscribe to our Flash Facts and Step 1 Express video series. Score the best deal on all three products with a Step 1 Triple Play Bundle.

USMLERx Step 2 Qmax Challenge #21610

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Check out today’s Step 2 CK Qmax Question Challenge.

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USMLERx Step 2 Qmax Challenge #21610A 75-year-old man presents to his family physician with a 3-day history of joint pain. The patient has had various “aches and pains” in his joints over the years, but in the past 3 days he has noticed that his first metatarsophalangeal (MTP) joint in his left foot has become very painful. He describes the pain as a dull, constant ache, 7 of 10 in severity. He denies any recent trauma or exposure to infectious agents. The remainder of his musculoskeletal examination is normal, with full range of motion and no focal tenderness in any of his other joints. The first MTP in the left foot is warm, erythematous, and extremely tender to touch. Synovial fluid is clear with no WBCs or RBCs, and a Gram stain is negative. Results of bone biopsy are shown in the image.

Which of the following is the most likely diagnosis?

A. Acute gout
B. Osteoarthritis
C. Rheumatoid arthritis
D. Septic arthritis
E. Systemic lupus erythematosus

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This practice question is an actual question from the USMLE-Rx Step 2 CK test bank. Get more Step 2 CK study help at USMLE-Rx.com.

USMLE-Rx Step 1 Qmax Challenge #3345

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USMLE-Rx Step 1 Qmax Challenge #3345A 46-year-old woman comes to her primary care physician after visiting her optometrist. While being fitted for new glasses, the patient was found to have persistent constriction of her left pupil. After a thorough history and physical examination, x-ray of the chest was ordered, and results are shown in the image.

Disruption of which of the following explains this woman’s symptoms?

A. Cranial nerve II on the left
B. Cranial nerve III on the right
C. First-order sympathetic neuron
D. Second-order (preganglionic) sympathetic neuron
E. Third-order (postganglionic) sympathetic neuron

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USMLE-Rx Step 1 Qmax Challenge #3343

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Check out today’s Step 1 Qmax Question Challenge.

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USMLE-Rx Step 1 Qmax Challenge #3343A 42-year-old woman presents to her physician with complaints of unintentional weight loss, increased appetite, and increased sweating. Physical examination reveals a pelvic mass that is very tender. Further workup leads to the removal of an ovarian tumor, a portion of which is shown in the image.

What kind of tumor did this patient have?

A. Krukenburg’s tumor
B. Mature teratoma
C. Ovarian choriocarcinoma
D. Struma ovarii
E. Thecoma-fibroma

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USMLE-Rx Step 1 Qmax Challenge #3324

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USMLE-Rx Step 1 Qmax Challenge #3324A 56-year-old heart transplant recipient presents to the emergency department with shortness of breath and dyspnea at rest. His cardiologist immediately observes that the patient has jugular venous distention and lower extremity edema. However, he eventually lapses into decompensated heart failure and dies. The appearance of his lung at autopsy is shown in the image.

Compared to normal lung tissue, what cells are more prominent in this patient’s lung?

A. Fluid-filled dendritic cells
B. Hemosiderin-laden macrophages
C. T-cells
D. Type I pneumocytes
E. Type II pneumocytes

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USMLE-Rx Step 1 Qmax Challenge #3316

11

Check out today’s Step 1 Qmax Question Challenge.

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USMLE-Rx Step 1 Qmax Challenge #3316A 16-year-old girl comes to the physician concerned that she has not yet begun menstruating. Her blood pressure is 160/100 mm Hg. Physical examination reveals anatomically normal female genitals but a lack of any secondary sexual development including breast buds or pubic hair.

In this patient, hormones from which layer of the adrenal gland shown in the image are overproduced?

A. 1
B. 2
C. 3
D. 4
E. 5

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Want to know the ‘bottom line?’ Purchase a USMLE-Rx Subscription and get many more features, more questions, and passages from First Aid, including images, references, and other facts relevant to this question.

This practice question is an actual question from the USMLE-Rx Step 1 test bank. For more USMLE Step 1 prep, subscribe to our Flash Facts and Step 1 Express video series. Score the best deal on all three products with a Step 1 Triple Play Bundle.

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