Key result
IABP stabilizes patients with total LMCA occlusion lacking collaterals, while rich collateralization preserves LV function.
Case Report (n=3)
Collaterals may preserve myocardial contractility in total left main coronary artery occlusion, and IABP may be beneficial for unstable patients with sparse collaterals awaiting surgery.
May support collateral assessment and selective IABP in left main occlusion; leaves open prospective validation before practice change.
In this report clinical and angiographic data on three patients with total occlusion of the left main coronary artery is presented. Two of our cases demonstrated rich collateralization with good preservation of left ventricular (LV) function. The third case, with initial subtotal occlusion and no collaterals, sustained a severe anterolateral myocardial infarction (MI) responding to the use of the intra-aortic balloon pump (IABP). This report is consistent with the findings of others who suggest the possible beneficial effect of collaterals in preserving myocardial contractility in this unusual situation. We suggest that the IABP may be of benefit in patients with total occlusion of the left main coronary artery and sparse collaterals who remain unstable and cannot be operated on immediately.
No takes yet. Share an insight, caveat, or question.
Trnka et al. (1980) conducted a case report in Total occlusion of the left main coronary artery (n=3). Intra-aortic balloon pump (IABP) was evaluated on Left ventricular function and clinical response. In three patients with total occlusion of the left main coronary artery, rich collateralization preserved LV function, and IABP was beneficial in the absence of collaterals.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: