OBJECTIVE: The authors present the initial results, on the left ventricle (LV) anterior aneurysms' treatment, by the Dor's technique of endoventricular circular patch plasty with septal exclusion. This work was initially based on Hutchins and Bulkley's (1980) concepts of left ventricle geometry and its' geometrical reconstruction, and on those of the circular reduction surgery by Jatene (1984). MATERIAL AND METHODS: Between April and October 1999, we performed six procedures for the surgical correction of LV aneurysms, by Dor's technique. Time between the anterior wall infarct and the surgical procedure varied between 8 days and 10 months, being 3 patients in functional class III, of the NYHA, 2 in class IV and 1 in class I. Four patients were males and the mean age was 58.3 years. On the pre-operative angiographic studies the global ejection fraction varied from 27 to 46% (mean 37.2%), the LV end systolic volume from 64.4 to 135.3 ml (mean 107.9 ml) and the LV end diastolic volume from 132.9 to 236.4 ml (mean 183.8 ml). The procedure was associated with the resection of mural thrombus, in 3 cases, myocardial revascularization in 5 cases, using 10 venous and three arterial grafts (2.2 grafts/patient) and 1 endarterectomy. The anterior wall was revascularized in 9 cases and the lateral and inferior in 2 each. The mean cross clamping and bypass time were, respectively, 44 and 110 minutes. RESULTS: The mean hospital post-operative time was 7.7 days. The patients were followed up for a period of 5 to 31 weeks, being all in functional class I. In 3 cases an angiography was performed, and on the other two a two dimension echocardiogram, to evaluate the global ejection fraction, which varied from 42.5 to 60% (mean 49.4), with an improvement of 32.8%. CONCLUSIONS: The authors believe, with these initial results, that this is another technique for the surgical correction of LV aneurysms with improvement of the LV function and the new geometry.
Heart ventricle; Cardiac surgery procedures; Heart aneurysms; Aneurysm, ventricular; Heart ventricle; Heart ventricle; Heart ventricle
