[Right atrial thrombosis: clinical and pathological findings and course (author's transl)].

Possible correlations between clinical and pathological findings and the results of various paraclinical tests were studied in 17 patients with right atrial thrombosis. Positive correlations existed with supraventricular rhythm disorders, particularly sinus node lesions. The presence of massive pulmonary emboli in all cases is suggestive of the origin of the thrombus being within the atrial cavity. Presumptive signs of right atrial thrombosis are the sudden unexplainable worsening of cardiac insufficiency factors, the appearance of paroxystic disturbances in supraventricular rhythm, and associated signs of pulmonary embolism due to peripheral venous disorders.