A definitive diagnosis of pulmonary embolism can be made by:
a. arterial blood gas (ABG) analysis.
b. chest x-ray examination.
c. pulmonary angiogram.
d. ventilation-perfusion scanning.
C
The angiogram is the only test that can confirm pulmonary embolism. ABG would only indicate hypoxemia and/or acid-base abnormalities. A chest x-ray study is nonconclusive. A ventilation-perfusion scan is nonconclusive.
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