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Updated: Aug 19, 2026

Myocardial Infarction and Functional Outcome Assessment in Pigs
Published on: April 25, 2014
[Management of patient with acute myocardial infarction due to left main trunk obstruction]
S Maeba1, T Shimakura, M Nonoyama
1Department of Cardiovascular Surgery, Fukuyama Cardiovascular Hospital, Hiroshima, Japan.
Insights
Acute Myocardial Infarction from Left Main Trunk Obstruction is serious. Emergent stenting and Coronary Artery Bypass Grafting (CABG) show promise, but require further evaluation for optimal patient outcomes.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
Context:
- Left Main Trunk Obstruction (LMT-AMI) is a critical condition.
- 13 cases were analyzed between April 1995 and March 1998.
Purpose:
- To evaluate the outcomes of emergent interventions for Acute Myocardial Infarction due to Left Main Trunk Obstruction.
- To compare the effectiveness of Plain Old Balloon Angioplasty (POBA), stenting, and Coronary Artery Bypass Grafting (CABG).
Summary:
- Eight patients underwent emergent intervention: 5 with POBA and 3 with stenting.
- POBA had a high rate of acute occlusion, while stenting improved hemodynamics before subsequent CABG.
- Seven of eight CABG patients survived, with stented sites remaining patent at 6 months in 2 out of 3 cases.
Impact:
- Emergent stenting followed by CABG may offer improved survival rates for LMT-AMI.
- The combination of emergent stenting and CABG warrants further investigation.
- Findings highlight the complex management and potential benefits of combined revascularization strategies.
Abstract:
Between April 1995 and March 1998, we experienced 13 cases of Acute Myocardial Infarction due to Left Main Trunk Obstruction (LMT-AMI). Two cases died before emergent intervention. Eight cases underwent emergent intervention (Plain Old Balloon Angioplasty (POBA) in five cases, Stenting in 3 cases); 2 cases died of acute occlusion of POBA site, 1 case survived by only POBA, and the other 5 cases underwent following Coronary Artery Bypass Grafting (CABG). 3 cases underwent only CABG with stable hemodynamics condition by Intraaortic balloon pumping (IABP) support. In a result, seven of eight CABG cases survived. Emergent stenting made the hemodynamics before CABG stable, and six-month's follow up angiogram showed occluded bypass grafts and patent stented sites in two of three cases. The combination therapy of emergent stenting and CABG will have to be evaluated in future.
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