Introduction:

Chronic coronary occlusions are associated with a negative impact on long-term prognosis.

Objectives:

To know if there is a difference in major cardiovascular events in patients undergoing successful revascularization versus failed revascularization of chronic total occlusion lesions instable angina.

Material and methods:

Cross-sectional, correlational study with two independent groups.

Results:

71 patients were evaluated, in a context of stable chronic angina, in the High Specialty Medical Unit of Bajio, from January 2013 to February 2020; 41 patients with successful revascularization (RE) and 30 with revascularization was failed (RF). The revascularization success rate was 57.7%. The rate of major cardiovascular events found among patients with RE vs RF in this study were: unstable angina events post-revascularization in 12.5% of the RE group and in 13.3% of the RF group (p = 0.918). AMI (acute myocardial infarction) occurred in 0% of the RE group and in 3.3% of the RF group (p = 0.245). Death of cardiac origin occurred in 0% of the RE group and in 3.3% of the RF group (p = 0.245). In contrast 0% of the RE group and 6.7% of the RF group patients needed new vascularization. The survival rate in RF patients was 96.7%, and in RE patients, it was 100%.

Conclusions:

Successful versus failed revascularization did not show statistically significant differences in the rate of major cardiovascular events.