Step 2 CS Blue sheet Case Motor vehicle accident MVA

These are the blue sheet, physical exam, diagnostic studies and differential diagnosis needed for a back pain case in the USMLE Step 2 CS exam:

BLUE SHEET BACK PAIN:

PHYSICAL EXAMINATION (Depends on the MVA, nature of the trauma and organs/systems involved):

1. HEENT: 

Inspection for lesions

Pupillary reflexes (PERRLA)

2. Lungs:  

Inspection of thoracic expansion and bruises

Palpation: Tactile fremitus.

Percussion: Look for tympanic or else.

Auscultation: Usually patients can move the thorax without inspiration, simulating decreased breath sounds uni or bilaterally.

3. Heart:

Inspection: for bruises or lesions

Palpation: Heaves, PMI, and chest wall tenderness

Auscultation

4. Abdomen

Inspection

Auscultation

Palpation (look for HSM, more if history of recent infectious mononucleosis)

Percussion

5. Skin:

Inspection

6. Neurologic:

Mental Status: Alert and oriented x 3 (person, place and time)

CN 2-12

Motor: Strength

Sensory

 

POSSIBLE DIAGNOSTIC STUDIES:

  1. Pelvic, rectal exam as needed
  2. Urine toxicology, blood alcohol level
  3. CXR
  4. CT abdomen
  5. CBC, blood type, and cross matching

 

DIFFERENTIAL DIAGNOSIS:

Lungs:

  1. Pneumothorax
  2. Tension pneumothorax
  3. Hemothorax
  4. Lung contusion

Heart:

  1. Cardiac tamponade
  2. Myocardial contusion

Chest wall:

  1. Rib fractures
  2. Flail chest

Abdomen:

  1. Splenic rupture
  2. Liver rupture
  3. Other organ damage

CNS:

  1. Epidural hematoma
  2. Subdural hematoma
  3. Skull fracture, skull base fracture (look for bilateral eye ecchymosis, CSF leak through the ears or nose, post auricular ecchymosis or Battle’s sign).

Please let me know if you have a doubt about this topic.

 

 

 

Juan Chango Azanza
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3 Comments

  1. I have a prob with this case and is that if a do The PE with this level of detail my 10 minutes runs out. Can you give me a tip please?

    • Hello Alvin,

      I hope your studies are doing great. It is very difficult to finish some cases in the Step 2 CS exam. My advice with any case in which you may find difficulties with time management is to focus more on the history and counseling part taking a little less time in the physical exam (less important). Sometimes you may run out of time in a case and that is fine as long as you have been doing the most important aspects of the case. Practice this case with a study partner to improve your timing and confidence and you should do fine.

      I wish you good luck in your preparation. Thanks for the comment.

  2. Thank you doctor. What about the Pt note? What do i do if i don’t have much time because the history is very detailed or the PE is very detailed? Focus more on the history than the the PE in the Pt note as well?

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