Resumo

GOTOR PEREZ, Consuelo Alejandra et al. Iatrogenic occlusion of the right coronary artery during tricuspid valve replacement. Rev. Colomb. Cardiol. [online]. 2019, vol.26, n.5, pp.296-299. ISSN 0120-5633.  https://doi.org/10.1016/j.rccar.2018.04.002.

The case is presented on a 68 year-old woman with severe tricuspid insufficiency. She also had a dilated right ventricle, a slightly depressed systolic function, and an undilated left ventricle with an ejection fraction of 47%. We treated her surgically, the tricuspid valve replacement was carried out with an ATS Nº 33 mechanical prosthesis and implanted a permanent epicardial pacemaker lead. In the immediate post operative period, she presented a persistent ST segment elevation on the inferior wall. An intra-aortic balloon pump was implanted; the urgent echocardiogram showed a global ventricular dysfunction with akinesia of the inferior wall. An urgent coronary angiography was performed, with an image of angulation and deformity being observed at distal level of the right coronary artery that was not present in the pre-surgical coronary angiography, which suggested an external traction of the vessela probably associated with a surgical suture. Percutaneous intervention was carried out, with a drug-eluting stent being implanted. It was percutaneously treated by implanting a drug-eluting stent restoring distal blood flow and normalizing the ST segment. The proximity of the tricuspid ring to anatomical structures like the right coronary artery means that it could be damaged during surgery. The iatrogenic damage to the right coronary artery requires an early diagnosis and treatment. For this reason, this complication must be included in the differential diagnosis of right ventricular dysfunction after cardiac surgery.

Palavras-chave : Valve replacement; Valvular prosthesis; Complications.

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