Direct intracoronary stent implantation.

The standard stent implantation technique requires routine predilatation of the target lesion with balloon catheter. Since occurrence of complications is possible, direct stent implantation without previous dilatation has been performed recently. In this study, a complex case of coronary lesion treated with direct stent implantation in a patient with unstable angina after diaphragmal myocardial infarction was reported. A coronary angiography finding indicated presence of severe eccentric stenosis in the proximal third of the dominant right coronary artery. The system of the left coronary artery was without stenotic lesions. After antiaggregation combination of aspirin and ticlopidine, the stent was successfully implanted and dilated under the pressure of 14 atmospheres. The control coronary angiography did not show residual stenosis of the right coronary artery. The patient was discharged without subjective discomforts for further out-patient treatment.