Correct!
5. All of the above

Her D-dimer level was 7,000 ng/ml (normal <500 ng/ml). X-rays of her chest and right leg were interpreted as normal. An electrocardiogram showed a sinus tachycardia with nonspecific ST and T wave changes. Troponin I was normal at 10 ng/ml.

What should be done next? (Click on the correct answer to be directed to the third of six pages)

  1. Lower extremity venous ultrasound
  2. Repeat troponin levels
  3. Pulmonary CT angiography
  4. 1 and 3
  5. All of the above

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