USMLE-Rx Step 2 Practice Q's

USMLE-Rx Step 2 Qmax Challenge #21169

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USMLE-Rx Step 2 Qmax Challenge #21169Five full-term infants are enrolled in a study in which their total bilirubin level is measured daily for the first week of life and then weekly for the next 21 days. The chart lists total serum bilirubin (in milligrams per deciliter) for each infant for the duration of the study.

Which of the following infants has physiologic jaundice?

A. Infant A
B. Infant B
C. Infant C
D. Infant D
E. Infant E

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USMLE-Rx Step 2 Qmax Challenge #21159

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USMLE-Rx Step 2 Qmax Challenge #21159A 2100-g (4.6-lb) boy was born at 32 weeks’ gestation by spontaneous vaginal delivery after an uncomplicated pregnancy to a Group B Streptococcus-negative, 22-year-old G2P1 woman. The amniotic fluid was clear. He began crying immediately after he was born. His Apgar scores were 9 and 10 at 1 and 5 minutes, respectively. Within 30 minutes of birth he was in respiratory distress, with tachypnea, nasal flaring, and subcostal retractions, and rhonchi throughout both lung fields. He was given supplemental oxygen but his condition deteriorated. He was intubated and given 100% oxygen. He did not receive surfactant. Despite this therapy he became increasingly cyanotic and died 2 days later. Below is a microscopic image of his lung tissue at autopsy.

Which of the following conditions most likely caused his death?

A. Bronchopulmonary dysplasia
B. Neonatal respiratory distress syndrome
C. Pneumonia
D. Pulmonary hemorrhage
E. Transient tachypnea of the newborn

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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 2 Qmax Challenge #21106

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USMLE-Rx Step 2 Qmax Challenge #21106A 24-year-old woman presents to her primary care physician with a chief complaint of 1 week of increased vaginal discharge with an unpleasant odor. She is sexually active with one partner and uses oral contraception for birth control. A pregnancy test is negative. Gynecologic examination reveals a pink cervix and a thin white discharge. The discharge has a positive amine “whiff” test and a pH of 6. Wet saline mount microscopy yields the following image.

What is the etiology of this condition?

A. Facultative intracellular bacteria infection
B. Fungal infection
C. Parasitic infection
D. Polymicrobial synergistic infection
E. Viral infection

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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 2 Qmax Challenge #21022

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USMLE-Rx Step 2 Qmax Challenge #21022A 2.5-year-old girl was diagnosed with a viral upper respiratory infection last week and now presents to her physician with a brassy cough and purulent airway secretions. Her parents believed that she may have croup and attempted mist therapy without success. The patient has been febrile to 39.0°C (102.2°F) for the past 24 hours and has had difficulty breathing during the past hour. Her review of systems is otherwise negative, and the mother denies that the patient has had any drooling or difficulty/pain when swallowing. Her heart rate is 92/min, blood pressure is 92/60 mm Hg, respiratory rate is 21/min, and temperature is 38.9°C (102°F). A Gram stain of secretions obtained in the office is shown in the image.

What organism is most likely responsible for this patient’s condition?

A. Anaerobic organisms
B. Moraxella catarrhalis
C. Nontypeable Haemophilus influenzae
D. Pseudomonas aeruginosa
E. Staphylococcus aureus

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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.

 

USMLERx Step 2 Qmax Challenge #21610

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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 2 Qmax Challenge #21005

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USMLE-Rx Step 2 Qmax Challenge #21005A 2-year-old boy is brought to the clinic for evaluation after 2 days of low-grade tactile fever, irritability, and decreased activity. His mother reports that on waking him this morning, his pillow was stained with a small amount of yellow fluid. His heart rate is 92/min, blood pressure is 104/70 mm Hg, respiratory rate is 22/min, and temperature is 38.8°C (101.°F). His external ear canal is normal, and his otoscopic examination is shown in the image. Which of the following is the most likely bacterial pathogen implicated in this condition?

A. Haemophilus influenzae type B

B. Neisseria meningitidis

C. Pseudomonas aeruginosa

D. Staphylococcus aureus

E. Streptococcus pneumoniae

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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 2 Qmax Challenge #21423

6

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

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USMLE-Rx Step 2 Qmax Challenge #21423A 32-year-old man is found to have a solitary, firm mass in the thyroid on routine physical examination. He has no complaints and the remainder of his physical examination is unremarkable. Family history is significant for an uncle who died of thyroid cancer at age 40 years. A biopsy of the thyroid stained with Congo red is shown in the image.

What further study should be done in this patient?

A. Barium swallow
B. Measurement of serum insulin-like growth factor-1
C. Measurement of urinary metanephrine levels
D. MRI of the brain
E. Renal biopsy

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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 2 CK test bank. Get more Step 2 CK study help at USMLE-Rx.com.

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