USMLE-Rx Step 1 Practice Q's

USMLE-Rx Step 1 Qmax Challenge #3493

4

Check out today’s Step 1 Qmax Question Challenge.

Know the answer? Post it below! Don’t forget to check back for an update with the correct answer and explanation (we’ll post it in the comments section below).

USMLE-Rx Step 1 Qmax Challenge #3493A 45-year-old man presents with a low-grade fever, hoarseness, cough, and a sore throat. On physical examination, he has swollen cervical lymph nodes. Gram stain of his sputum is obtained, and the specimen is shown in the image. Secretions obtained from the patient’s tonsils are analyzed using polymerase chain reaction, and a diagnostic protein subunit is found.

The exotoxin responsible for his symptoms inhibits protein synthesis by which of the following mechanisms?

A. Activation of adenyl cyclase by adenosine diphosphate ribosylation
B. Activation of Gs
C. Adenosine diphosphate ribosylation of elongation factor 2
D. Inhibition of Gi
E. Stimulating macrophages to release tumor necrosis factor-?

———————–

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.

USMLE-Rx Step 1 Qmax Challenge #3488

7

Check out today’s Step 1 Qmax Question Challenge.

Know the answer? Post it below! Don’t forget to check back for an update with the correct answer and explanation (we’ll post it in the comments section below).

USMLE-Rx Step 1 Qmax Challenge #3488A 33-year-old woman presents to her physician complaining of fatigue and joint aches. On physical examination, her doctor notices abnormalities in her skin, which are seen in the image. Laboratory studies show antinuclear and anti-Sm antibodies. Urinalysis shows RBC casts and 2.1 g protein per 24 hours. A renal biopsy is performed.

Which of the following diseases has a similar cellular mechanism of disease progress?

A. Acute serum sickness
B. Cellulitis
C. Cervical carcinoma
D. Contact dermatitis
E. Goodpasture’s disease
F. Graves’ disease

———————–

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.

USMLE-Rx Step 1 Qmax Challenge #3479

12

Check out today’s Step 1 Qmax Question Challenge.

Know the answer? Post it below! Don’t forget to check back for an update with the correct answer and explanation (we’ll post it in the comments section below).

USMLE-Rx Step 1 Qmax Challenge #3479A 23-year-old man presents to his physician after losing consciousness. A friend who was with the man at the time told him that, while he was unconscious, he looked like he was having a “fit.” The friend reports that the patient lost control of bowel and bladder function during the episode. The patient denies drug or alcohol use. The physician prescribes him a medication to control the problem. Three weeks later, the patient returns to the doctor to report a rash that has developed since he started taking the medication. The rash involves both the skin and the mucous membranes. The rash began as macular and then developed bullae that ruptured, as shown in the image. Despite stopping the drugs, the patient dies.

Which of the following medications most likely caused this rash?

A. Clonazepam
B. Gabapentin
C. Lamotrigine
D. Phenobarbital
E. Topiramate

———————–

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.

USMLE-Rx Step 1 Qmax Challenge #3455

10

Check out today’s Step 1 Qmax Question Challenge.

Know the answer? Post it below! Don’t forget to check back for an update with the correct answer and explanation (we’ll post it in the comments section below).

USMLE-Rx Step 1 Qmax Challenge #3455A patient suffering from an upper respiratory infection presents to his physician with complaints of body aches, urinary frequency, and “strange-colored urine.” His previous medical history is significant only for recently beginning treatment with a statin drug for high cholesterol. His serum creatinine level is 2.0 mg/dL. A histologic section of the patient’s kidney is shown in the image.

Which of the following is the most likely diagnosis?

A. Acute tubular necrosis
B. Amyloidosis
C. Analgesic nephropathy
D. Focal segmental glomerulosclerosis
E. Pyelonephritis

———————–

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.

USMLE-Rx Step 1 Qmax Challenge #3442

8

Check out today’s Step 1 Qmax Question Challenge.

Know the answer? Post it below! Don’t forget to check back for an update with the correct answer and explanation (we’ll post it in the comments section below).

USMLE-Rx Step 1 Qmax Challenge #3442A 34-year-old man is brought to the emergency department after being involved in a high-speed collision with an oncoming car. He has multiple fractures and contusions. Results of fundoscopy are shown in the image. The patient is stabilized and transferred to the intensive care unit. Two days later, there is evidence of gastrointestinal hemorrhage.

What is the most likely mechanism of the gastrointestinal bleeding?

A. Chronic irritation of the gastroesophageal junction by caustic acid secretions
B. Dilated submucosal veins in the esophagus due to portal hypertension
C. Increased vagal stimulation secondary to elevated intracranial pressure
D. Inhibited gastric secretion of mucus secondary to bacterial infection in the stomach
E. Overuse of oral analgesics leading to superficial gastric erosions

———————–

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.

USMLE-Rx Step 1 Qmax Challenge #3421

12

Check out today’s Step 1 Qmax Question Challenge.

Know the answer? Post it below! Don’t forget to check back for an update with the correct answer and explanation (we’ll post it in the comments section below).

USMLE-Rx Step 1 Qmax Challenge #3421A 54-year-old woman complains about a persistent cough she has had for the past 3 months. The cough has been bothering her a lot and making her anxious. She thinks the anxiety is why she has lost some weight recently. She also blames the anxiety whenever she wakes up in the middle of the night and finds herself drenched in sweat. Further history reveals she has rheumatoid arthritis (RA), but her joint pains and swellings are well controlled by medications her rheumatologist has prescribed her. Following a physical examination, the physician orders an x-ray of the chest (see image). Based on the results, the physician immediately prescribes an antibiotic regimen and asks her to discontinue one of the drugs used to treat her RA.

Which of the following drugs increased her risk of developing the disease shown on the radiograph?

A. Etanercept
B. Methotrexate
C. Nonsteroidal anti-inflamatory drugs
D. Risedronate
E. Sulfasalazine

———————–

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.

USMLE-Rx Step 1 Qmax Challenge #3417

10

Check out today’s Step 1 Qmax Question Challenge.

Know the answer? Post it below! Don’t forget to check back for an update with the correct answer and explanation (we’ll post it in the comments section below).

USMLE-Rx Step 1 Qmax Challenge #3417A 58-year-old man presents to his physician with fatigue and cough. He has a history of chronic myelogenous leukemia and has been in remission for 3 years. His WBC count is 50,000/mm³, and immature cells are noted on peripheral blood smear. In the office he spikes a fever of 39.4°C (103°F). Lung tissue is obtained for biopsy and silver stained (results are shown in the image). Based on the results, appropriate antimicrobial therapy is initiated. In a few hours the patient develops blurred vision, and later the patient’s QTc interval is noted to be elongated on ECG.

What is the most likely antimicrobial agent this patient was prescribed?

A. Voriconazole
B. Amphotericin B
C. Caspofungin
D. Griseofulvin
E. Terbinafine

———————–

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.

 

Go to Top