Clinical outcomes following stent implantation in internal mammary artery grafts.
We evaluated our experience with percutaneous coronary intervention (PCI) of internal mammary artery (IMA) grafts. From the institution's database we identified 288 patients with 311 IMA lesions. Of these, 82 (26.4%) had stents placed during PCI. Angiographic success was 92%. Mortality at 1 month was 1.7%, myocardial infarction (MI) 15.7%, and target lesion revascularization (TLR) 0.4%. Cumulative 1-year event rates were mortality 6.4%, MI 20.4%, and TLR 8.0%. TLR rates were significantly higher in the stented lesions than lesions treated with angioplasty alone (19.2% vs. 4.9%; P = 0.004). The higher TLR rate in stented lesions was most apparent at the anastomotic site (25.0% vs. 4.2%; P = 0.006). Percutaneous revascularization of IMA grafts can be performed safely with high procedural success and excellent short- and long-term results. Stenting, particularly at the anastomotic site, was associated with significantly greater rates of TLR than angioplasty alone.
Sharma
Arvind K
AK
Department of Cardiology, Washington Hospital Center, Washington, DC 20010, USA.
McGlynn
Scott
S
Apple
Sue
S
Pinnow
Ellen
E
Canos
Daniel A
DA
Gevorkian
Natalie
N
Tebeica
Mihaela
M
Gruberg
Luis
L
Pichard
Augusto D
AD
Lindsay
Joseph
J
D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D019917:Blood Vessel Prosthesis Implantation; D005260:Female; D006083:Graft Occlusion, Vascular / Q000401:mortality* / Q000628:therapy*; D006801:Humans; D007387:Internal Mammary-Coronary Artery Anastomosis; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D015607:Stents; D015996:Survival Rate; D016896:Treatment Outcome