Combined fibrinolysis using reduced-dose alteplase plus abciximab with immediate rescue angioplasty versus primary angioplasty with adjunct use of abciximab for the treatment of acute myocardial infarction: Asia-Pacific Acute Myocardial Infarction Trial (APAMIT) pilot study.
We conducted a randomized feasibility pilot study comparing combined fibrinolysis with immediate rescue angioplasty vs. primary angioplasty with adjunctive abciximab in patients with acute myocardial infarction (AMI). Seventy patients with ST segment elevation AMI of </= 6 hr were randomized to either 50 mg of alteplase and abciximab (n = 34) or primary angioplasty with adjunctive abciximab (n = 36). Coronary angiography was performed at 60 min in the combined lytic group and TIMI 3 flow was present in 65% of patients as compared to 25% (P = 0.001) in the primary angioplasty group prior to intervention. Treatment success, defined as TIMI 3 flow, was achieved in 83% of patients in the primary angioplasty group (P = 0.075 compared to 65% in combined lytic group before rescue angioplasty). There was no difference in overall treatment success between primary angioplasty and combined lytic group with rescue angioplasty (83% vs. 94%; P = NS). Major adverse cardiac events at 1 month were not significant (15% vs. 11%; P = NS), but there was a trend toward more events in the combined lytic group at 6 months (32% vs. 14%; P = 0.066), particularly in target vessel revascularization. In this feasibility pilot study, high rate of TIMI 3 flow was attained in patients with AMI with both combined fibrinolysis and primary angioplasty with adjunctive abciximab. A larger randomized trial is currently ongoing to compare these two strategies.
Department of Cardiology, National Heart Centre, Singapore. aaron_wong@nhc.com.sg
Aaron
A
Wong
Koon-Hou
KH
Mak
Charles
C
Chan
Tian-Hai
TH
Koh
Kean-Wah
KW
Lau
Tai-Tian
TT
Lim
Soo-Teik
ST
Lim
Philip
P
Wong
Ling-Ling
LL
Sim
Yean-Teng
YT
Lim
Huay-Cheem
HC
Tan
Yean-Leng
YL
Lim
D000077284:Abciximab; D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000295:instrumentation; D000911:Antibodies, Monoclonal / Q000009:adverse effects / Q000627:therapeutic use*; D002318:Cardiovascular Diseases / Q000209:etiology; D003131:Combined Modality Therapy; D017023:Coronary Angiography; D003326:Coronary Circulation; D004359:Drug Therapy, Combination; D005240:Feasibility Studies; D005260:Female; D005343:Fibrinolytic Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D006470:Hemorrhage / Q000139:chemically induced; D006801:Humans; D007140:Immunoglobulin Fab Fragments / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000503:physiopathology / Q000628:therapy*; D010865:Pilot Projects; D010975:Platelet Aggregation Inhibitors / Q000009:adverse effects / Q000627:therapeutic use*; D012107:Research Design; D012846:Singapore; D015607:Stents; D013997:Time Factors; D010959:Tissue Plasminogen Activator / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D016896:Treatment Outcome
D000911:Antibodies, Monoclonal; D005343:Fibrinolytic Agents; D007140:Immunoglobulin Fab Fragments; D010975:Platelet Aggregation Inhibitors; D010959:Tissue Plasminogen Activator; D000077284:Abciximab