USMLE Step I Self Assessment-1 40MCQs

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Total MCQs=40
Time allowed=60min

Self Assessment USMLE Step 1 - MCQ of the Day

A 25 years old male had a fall during football playing.   There is injury to the left knee and it is painful.  The patient has weekened inversion of the left foot, loss of eversion of the foot,  loss of extension of the digits, loss of doesiflexion plus sensory loss on anterolateral leg and dorsum of left foot. The radiograph is given below.  Which of the following structures seem to be damaged?

 

1. Common Fibular Nerve
2. Deep Fibular Nerve
3. Piriformis syndrome
4. Superficial Fibular Nerve
5. Tibial Nerve

 

 

 

 

Answer: a

Self Assessment USMLE Step 1 - MCQ of the Day

A 30 years old female has short stature, webbed neck and low set ears.  She was investigated for Diabetes and Thyroid problems which were found to be normal.  Echocardiography revealed no heart defects.  Genetic studies revealed 45X.  She wants to conceive a baby.  Uterus is normal on Ultrasound. Which one of the following is the treatment of choice for her?

 

 

1. Gene therapy
2. Estrogens
3. IVF Procedure
4. Progesterone
5. Renal status investigations

 

 

 

 

 

 

 

 

 

 

Answer: c

 

Self Assessment USMLE Step 1 - MCQ of the Day

A 54 years old man has been suffering from pain epigastrium for the last 3 weeks.  There is an epigastric mass that is tender on palpation.  His WBC count is raised.  It startrted as a severe pain episode but now has become chronic.  His CT scan is shown.  Which of the following structures seems to be having a pathology?

 

1. Esophagus
2. Kidney
3. Liver
4. Pancreas
5. Stomach

 

 

 

 

 

 

 

 

 

Answer: d

Self assessment USMLE Step 1 - MCQ of the Day

A 59 years old male who has been smoking for the last 30 years has cough and hemoptysis for the last 6 months. He has pain in his right shoulder and arm.  His Physical examination shows lack of breathsounds at the right upper chest zones.  The pupil on the right side is constricted and there is drooping of the eyelid.  Which of the following structure is involved in the development of this clinical picture?

 

1. Cervical sympathetic trunk
2. Maxillary Nerve
3. Oculomotor Nerve
4. Trigeminal Nerve
5. Trochlear Nerve

 

 

 

 

 

Answer: a

Self Assessment USMLE Step 1 - MCQ of the Day

A 25 years old G6PD deficient patient is under the effect of the popular notion that megadoses of vitamin C protects against the common cold and he uses that.  Such a thing is not documented in controlled clinical trials and probably the little relief is due to the mild antihistaminic effect of Ascorbic acid.    The use of megadoses of vitamin C predisposes this patient to which of the following complications?

1. Bleeding from gums
2. Defective collagen formation
3. Easy bruising
4. Excess collagen formation
5. Hemplytic Anemia

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answer: e

Self Assessment USMLE Step 1 - MCQ of the Day

Receiver operating characteristic (ROC) curves are widely used in laboratory medicine to assess diagnostic accuracy of a test, to choose the most optimal cut-off of a test and to compare diagnostic accuracy of several tests.  Which of the following two Parameters are plotted?

 

 

 

1. Sensitivity and Accuracy
2. Sensitivity and Precision
3. Sentitivity and Prevelance
4. Sensitivity and 1-Specificity
5. Sensitivity and Specificity
    
    
    
    

 

 

 

 

 

Answer:d