Coronary angioplasty in one or more severe obstruction on left anterior descending artery. Clinical and angiographic correlation

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Abstract

Between November 1987 and April 1991, PTCA was done in 225 lesions in 195 consecutive patients, with one or more severe obstruction in left anterior descending artery without other associated coronary lesions. In hospital results were correlated with plaque characteristic (types A, B and C), localization, sex and clinical condition (unstable and stable). Results: Global successful PTCA was obtained in 91.5 %. Type A had more successful compared with type C, however acute com- plications (AMI, acute oclusions) was more frequent in type B (5.4% and 6.3%) than in type A (0% and 0%) or C (3.7 % and 0 %). No differences was founded by comparing site of obstruction, sex or clinical characteristic. However type B plus unstable conditions had more complications (AMI 5.1 % and SAO 6.1 %) than type A (0 % and 0 %). Unstable patients had more frequently type B of lesions (58.4 %) than type A (36.1 %) or type C (5.s %). Type A had 100 % of primary success independent with other clinical or angiographic variables. Conclusion: PTCA in LAD lesions is an effective and a safe procedure and its in hospital results were correlated with angiographic variables. So in type B acute complications are more frequent. Only unstable patients with type B lesions had more com- plications and 100 % primary success in this serie.