PBL Sessions: Vascular Diseases 2

Page 5

History of Present Illness:

A ventilation-perfusion scan is performed. The findings are represented below:

Figure 4: Perfusion scan

Additional laboratory findings include a prothrombin time of 12 seconds (normal 10.7 - 15 seconds) and partial thromboplastin time of 28 seconds (normal 25 - 40 seconds).

Tasks

• What do these findings indicate?

• What hypotheses explain these findings?

• Explain your reasoning for the hypotheses you choose.

• Is there anything that can tie these findings together?

  Stop !! Complete discussions and tasks before moving to the next page.

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