The Clinical Course of Patients with Suspected Pulmonary Embolism and a Negative Pulmonary Arteriogram

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Abstract
Selective pulmonary arteriography, with superselective magnification views of the lung bases or other areas where abnormalities are shown on perfusion lung scans, performed within 24-48 h after the onset of symptoms, can effectively rule out clinically significant pulmonary thromboembolism. Patients (180) (minimum follow up, 6 mo.) with suspected pulmonary embolism and negative pulmonary arteriograms were studied. None of the 167 untreated patients died as a result of thromboembolic disease during the acute illness (20 died from unrelated causes), and none of the 147 patients who survived suffered recurrent embolism during follow up.

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