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  • Title: [Mobile thrombus of the right heart and pulmonary embolism: diagnostic and therapeutic problems. Apropos of 12 cases].
    Author: Chapoutot L, Metz D, Canivet E, Maillier B, Torossian F, Pommier JL, Nazeyrollas P, Sal R, Baehrel B, Elaerts J.
    Journal: Arch Mal Coeur Vaiss; 1993 Jul; 86(7):1039-45. PubMed ID: 8291939.
    Abstract:
    The objectives of this report were to analyse clinical presentation, echocardiographic features and diagnostic and therapeutic problems posed by an unusual form of thrombo-embolic disease: mobile right heart thrombosis. Systematic echocardiography in 170 cases of severe pulmonary embolism identified mobile right thrombi in 12 cases. The auscultatory findings were abnormal in 6 cases, 3 showing signs of tricuspid obstruction. Two-dimensional echocardiography showed an extremely mobile right atrial mass, sometimes prolapsing across the tricuspid valve, which was variously spheric, ovoid or worm-like; dilatation of the right heart chambers and echocardiographic signs of cor pulmonale were observed in all cases. The differential diagnosis with other embolic masses of the right atrium and, above all, with well-developed Chiari networks, may be difficult and requires transoesophageal echocardiography. Pulmonary angiography is contra-indicated because of the risk of embolism. Embolectomy under cardiopulmonary bypass was carried out in 8 patients, immediately after echocardiography in 6 cases. The thrombus was recovered from the right atrium in 6 cases and from the pulmonary artery in 2 cases: there was one operative death. Medical treatment was administered to 3 inoperable patients. The clinical and echocardiographic outcome was good in 2 of these but the third patient died; autopsy revealed thrombi in the right atrium and pulmonary artery. One patient died before any treatment could be given and autopsy showed the thrombus in the pulmonary artery. These results confirm the extreme instability of this type of thrombus and the risk of death due to its embolism.(ABSTRACT TRUNCATED AT 250 WORDS)
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