The feasibility of coronary stenting without predilation is demonstrated in
240 patients. In all, 249 stents were placed. Primary implantation was suc
cessful in 93% of cases. In 17 lesions the stents could not be advanced thr
ough the stenotic lesion. The unexpanded stents were removed through the gu
iding catheter, and stenting was performed after predilation. Minor complic
ations (side branch compromise and intimal dissection), which were successf
ully treated, occurred in 26 patients (10.6%).