[Comparison of clinical and postmortem evaluation of coronary artery stenosis: data on patients who died after coronary artery bypass surgery].

Comparison of quantitative clinical angiographic data with postmortem coronary angiographic and visual evaluation of transversal sections of coronary arteries (CA) data was made. CA of 25 patients who died after coronary artery bypass surgery were investigated. Comparison of clinical and postmortem angiographic data showed more frequent underestimation (12%) and overestimation (12%) of stenosis in clinical angiography in cases of right CA injury. Comparison of clinical angiography and evaluation of coronary stenosis on transversal sections showed significant underestimation of stenosis in cases of left main branch (36%) and right CA (32%) injuries. Use of more projections in clinical angiography, evaluation of artery diameter along the whole length of the vessel, investigation of relationship between CA caliber and type of artery branching may improve clinical diagnosis of CA stenosis.