USMLE-Rx Step 2 Practice Q's

USMLE-Rx Step 2 Qmax Challenge #23952

6

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

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USMLE-Rx Step 2 Qmax Challenge #23952A research team at a large pharmaceutical company has claimed to create a new serologic test that can be used for faster diagnosis of bacterial sepsis in patients in intensive care units. The team confirmed the presence or absence of bacterial infection via blood culture. The initial study was conducted at multiple hospitals and completed 3 months ago. The research team is eager to discuss the study at a national conference; however, before submitting their research they want an evaluation and confirmation of their results with the data table provided below.

What is the positive predictive value of this diagnostic test?

A. 300 / 350
B. 300 / 400
C. 400 / 1000
D. 550 / 600
E. 850 / 1000

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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 #23885

8

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

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USMLE-Rx Step 2 Qmax Challenge #23885A 20-year-old nulliparous obese woman with a recent history of diabetes mellitus complains of increased facial hair and abnormal menses since menarche. Results of ultrasonography are shown in the image.

What is the most likely underlying cause of this condition?

A. 45,X genotype
B. Adrenocortical carcinoma
C. FMR1 premutation
D. Hyperandrogenic state
E. Thyroid dysfunction

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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 #23847

6

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

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USMLE-Rx Step 2 Qmax Challenge #23847A 55-year-old woman with type 2 diabetes mellitus and chronic kidney disease presents to her physician with her fourth episode of postprandial right upper quadrant pain, nausea, and vomiting. Unlike her previous presentations, the pain is more severe and has persisted for 24 hours. Her temperature is 39°C (102.2°F). Physical examination is notable for right upper quadrant tenderness and cessation of inspiration during deep palpation of the area. Amylase and bilirubin levels are within normal limits. Results of ultrasonography are shown in the image.

What is the most appropriate next step in management?

A. Endoscopic retrograde cholangiopancreatography, stone removal, and sphincterotomy
B. Immediate appendectomy
C. Intravenous antibiotics and hydration alone
D. Intravenous antibiotics and hydration, and elective cholecystectomy in 4-6 weeks
E. Intravenous antibiotics and hydration, and then early cholecystectomy within 72 hours of symptom onset

———————–

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.

USMLE-Rx Step 2 CK Qmax Challenge #23840

3

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

Know the answer? Post it in the comments 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 2 CK Qmax Challenge #23840A 55-year-old woman with type 2 diabetes mellitus and chronic kidney disease presents to her physician with her fourth episode of postprandial right upper quadrant pain, nausea, and vomiting. Unlike her previous presentations, the pain is more severe and has persisted for 24 hours. Her temperature is 39°C (102.2°F). Physical examination is notable for right upper quadrant tenderness and cessation of inspiration during deep palpation of the area. Amylase and bilirubin levels are within normal limits. Results of ultrasonography are shown in the image.

What is the most appropriate next step in management?

A. Endoscopic retrograde cholangiopancreatography, stone removal, and sphincterotomy
B. Immediate appendectomy
C. Intravenous antibiotics and hydration alone
D. Intravenous antibiotics and hydration, and elective cholecystectomy in 4-6 weeks
E. Intravenous antibiotics and hydration, and then early cholecystectomy within 72 hours of symptom onset

———————–

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.

USMLE-Rx Step 2 CK Qmax Challenge #23833

12

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

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USMLE-Rx Step 2 Qmax Challenge #23833A 2-week-old girl is brought to the pediatrician for a well-baby visit. The infant has been well and her mother has no concerns. She was born full term with no complications. Vital signs are stable and her physical examination reveals a happy, healthy child. However, results of ophthalmoscopic examination are shown in the image.

This child’s disease is caused by loss of which of following alleles?

A. Gain-of-function mutation in theras gene
B. Gain-of-function mutation in theRb gene
C. Loss-of-function mutation in thep53 gene
D. Loss-of-function mutation in theras gene
E. Loss-of-function mutation in theRb gene

———————–

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.

USMLE-Rx Step 2 CK Qmax Challenge #21302

7

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

Know the answer? Post it in the comments 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).

A 71-year-old woman who is in the surgical intensive care unit 3 hours after a partial colectomy for colorectal cancer suddenly becomes unarousable. The heart rhythm on telemetry is shown in the image. The house officer immediately begins cardiopulmonary resuscitation. After defibrillating the patient with no response, the patient is intubated and cardiopulmonary resuscitation is continued. Capillary refill is sluggish (4 sec), and she shows no sign of improvement. The rhythm is unchanged on repeat ECG.

What is the most appropriate next step in management?

USMLE-Rx Step 2 CK Qmax Challenge #21302

 

 

 

 

A. Epinephrine
B. Atropine
C. Lidocaine
D. Vagal maneuver
E. Continue defibrillating

———————–

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.

USMLE-Rx Step 2 CK Qmax Challenge #21202

8

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

Know the answer? Post it in the comments 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 2 CK Qmax Challenge #21202A 32-year-old man with trisomy 21 presents with fatigue and swollen, bleeding gums for the past 5 days. He lives in a group home, and was formerly employed in a factory manufacturing hair products. He has smoked 1 pack of cigarettes per day for the past 15 years. He denies use of alcohol or illicit drugs. Physical examination reveals pallor, diffuse petechiae, oozing oral mucosa, and splenomegaly. Bone marrow aspirate reveals the type of cell shown in the image.

Which of the following risk factors contributed most to the development of the patient’s condition?

A. Down’s syndrome (trisomy 21)
B. Exposure to Epstein-Barr virus in his home
C. History of smoking
D. Prior lead exposure
E. Age

———————–

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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