Research Article
The Use of Computed Tomography of Pulmonary Angiogram in a District Hospital
Table 2
Stratification of the CTPA requests according to the simplified Wells score and D-dimer ().
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Consists of previous pulmonary embolism or deep vein thrombosis, 1.5 point; heart rate >100 beats/minute, 1.5 point; recent surgery or immobilisation (within the last 30 days), 1.5 point; clinical signs of deep vein thrombosis, 3 points; alternative diagnosis less likely than pulmonary embolism, 3 points; haemoptysis, 1 point; and active cancer (treated within the last 6 mo), 1 point [2]. *Demonstrates that 18 scans were performed on patients with low Wells score who did not have D-dimer testing. One of these 18 scans showed PE. †Demonstrates that 5 scans were performed on patients with low Wells score with negative D-dimer. None of these 5 scans revealed PE. |