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[Cardiogenic shock. Coronary angioplasty after failed intravenous thrombolysis]
Insights
Rescue angioplasty effectively restored blood flow in heart attack patients with cardiogenic shock after failed thrombolysis. This reperfusion strategy significantly improved survival rates in this critical patient group.
Area of Science:
- Cardiology
- Interventional Cardiology
- Acute Myocardial Infarction
Context:
- Cardiogenic shock (CS) is a severe complication of acute myocardial infarction (AMI).
- Successful reperfusion is critical for improving outcomes in AMI with CS.
- Intracoronary streptokinase is a thrombolytic agent used in AMI.
Purpose:
- To evaluate the efficacy of rescue percutaneous transluminal coronary angioplasty (PTCA) as a reperfusion strategy in patients with AMI complicated by CS after failed intracoronary streptokinase infusion.
- To assess the in-hospital mortality rates associated with successful versus failed PTCA in this patient cohort.
Summary:
- Rescue PTCA was performed in 13 patients with AMI and CS following unsuccessful intracoronary streptokinase.
- Reperfusion (TIMI 3 flow, <50% stenosis) was achieved in 8 patients (61.5%).
- Failure was due to inability to cross occlusion (2 patients) or recurrent thrombosis (3 patients) leading to hemodynamic instability.
Impact:
- Rescue PTCA is an effective reperfusion method for AMI with CS post-thrombolysis failure.
- Successful reperfusion via PTCA significantly reduced in-hospital mortality (25% vs. 80% in failed PTCA group).
- This intervention improves survival in a high-risk AMI patient population.
Abstract:
Rescue coronary angioplasty (PTCA) was employed as reperfusion strategy after unsuccessful intracoronary infusion of streptokinase in 13 patients with AMI complicated by cardiogenic shock (CS). Reperfusion defined as reestablishment of TIMI 3 degree flow in the infarct related artery and reduction in luminal narrowing to less than 50% was achieved in 8 patients (61.5%). The failure of PTCA was caused by: inability to cross occlusion in 2 patients and recurrent thrombosis despite repeated dilatations resulting in hemodynamic instability requiring cardiopulmonary resuscitations during the procedure in 3 patients. There was no significant differences in mean age, sex, time from onset of symptoms, LVEF, artery involved, extent of coronary disease and incidence of cardiopulmonary resuscitations during the procedures. There where 4 in-hospital deaths among patients with failed PTCA (80%) compared to 25% mortality in reperfused group. We conclude that PTCA is an effective method of achieving reperfusion in patients with CS complicating AMI after failed thrombolysis with intracoronary streptokinase and that it improves in-hospital survival.