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Assessment of transvenous right atriography in the diagnosis of pericardial effusion.

From our results, we feel that transvenous right atriography is a reliable confirmatory investigation of pericardial effusion. The procedure is simple and can be carried out in any hospital. Spurious positive results may arise from faulty technique or due to marked pericardial thickenning whilst false negatives may be enountered with viscid, inspissated or loculated pericardial effusion.