TY - JOUR
T1 - Angioplasty of coronary bifurcation stenoses
T2 - Immediate and long‐term results of the protecting branch technique
AU - Renkin, Jean
AU - Wijns, William
AU - Hanet, Claude
AU - Michel, Xavier
AU - Cosyns, Jacques
AU - Col, Jacques
PY - 1991/3
Y1 - 1991/3
N2 - Percutaneous transluminal angioplasty (PTCA) of coronary stenoses involving major bifurcations carries a small but significant risk of side branch occlusion which can be avoided by simultaneously using multiple dilatation systems. Among 1,275 PTCA procedures performed between 1984 and 1988 in 1,035 consecutive patients, 42 double wire procedures were applied (4%) to protect and/or dilate major coronary side branches. A total of 80 coronary stenoses were attempted of which 76 were located on a bifurcation and 4 on other segments. In the first 11 patients (group A), 2 guiding catheters were used and PTCA of each vessel was successfully performed by means of separate double lumen over‐the‐wire balloon catheters. In the next 31 patients (group B), 2 guidewires were advanced through a single guiding catheter and PTCA was attempted using “Monorail” balloon catheters sequentially advanced over the wires. In group B, a successful PTCA was obtained in 29 patients (93%) but twisting of the wires hampered balloon progression in 5 cases, such that dilatation could only be performed by stepping back to a single wire technique. The procedure time in group B was significantly shorter than in group A: 144 ± 30 versus 230 ± 52 minutes (p = .01). Repeat angiography was performed in 35 out of 40 patients (87%) after a mean of 180 ± 46 days following successful PTCA. Angiographic restenosis was present in 37% (24/65) of bifurcation segments which, in our experience, is not significantly different from the angiographic restenosis rate in less complex lesions (248/740; 34%; NS). It is concluded that 1) the need for using a protecting branch technique in PTCA practice is uncommon (4%); 2) among other approaches, the use of a “Monorail” system allows successful dilatation in 93% of cases with a shortened procedure time; 3) the restenosis rate at repeat angiography is similar to that of non‐bifurcated lesions.
AB - Percutaneous transluminal angioplasty (PTCA) of coronary stenoses involving major bifurcations carries a small but significant risk of side branch occlusion which can be avoided by simultaneously using multiple dilatation systems. Among 1,275 PTCA procedures performed between 1984 and 1988 in 1,035 consecutive patients, 42 double wire procedures were applied (4%) to protect and/or dilate major coronary side branches. A total of 80 coronary stenoses were attempted of which 76 were located on a bifurcation and 4 on other segments. In the first 11 patients (group A), 2 guiding catheters were used and PTCA of each vessel was successfully performed by means of separate double lumen over‐the‐wire balloon catheters. In the next 31 patients (group B), 2 guidewires were advanced through a single guiding catheter and PTCA was attempted using “Monorail” balloon catheters sequentially advanced over the wires. In group B, a successful PTCA was obtained in 29 patients (93%) but twisting of the wires hampered balloon progression in 5 cases, such that dilatation could only be performed by stepping back to a single wire technique. The procedure time in group B was significantly shorter than in group A: 144 ± 30 versus 230 ± 52 minutes (p = .01). Repeat angiography was performed in 35 out of 40 patients (87%) after a mean of 180 ± 46 days following successful PTCA. Angiographic restenosis was present in 37% (24/65) of bifurcation segments which, in our experience, is not significantly different from the angiographic restenosis rate in less complex lesions (248/740; 34%; NS). It is concluded that 1) the need for using a protecting branch technique in PTCA practice is uncommon (4%); 2) among other approaches, the use of a “Monorail” system allows successful dilatation in 93% of cases with a shortened procedure time; 3) the restenosis rate at repeat angiography is similar to that of non‐bifurcated lesions.
KW - bifurcation stenosis
KW - coronary angioplasty
KW - double wire technique
UR - http://www.scopus.com/inward/record.url?scp=0026087556&partnerID=8YFLogxK
U2 - 10.1002/ccd.1810220303
DO - 10.1002/ccd.1810220303
M3 - Article
C2 - 2013078
AN - SCOPUS:0026087556
SN - 0098-6569
VL - 22
SP - 167
EP - 173
JO - Catheterization and Cardiovascular Diagnosis
JF - Catheterization and Cardiovascular Diagnosis
IS - 3
ER -