Shock Index: A Simple Clinical Parameter for Quick Mortality Risk Assessment in Acute Myocardial Infarction
Abstract
Primary percutaneous coronary intervention (PCI) has become the preferred reperfusion strategy in patients with ST-segment elevation myocardial infarction and cardiogenic shock. Early identification of patients at risk for developing cardiogenic shock allows rapid decision making to determine reperfusion and transportation to a PCI centre.
The aim of this analysis was to evaluate shock index (SI) as a marker for patients at risk of cardiogenic shock. A total of 644 consecutive patients (73% male) with acute myocardial infarction with ST elevations were analyzed retrospectively.
Primary PCI was performed in 92% of patients, and 7% of patients underwent rescue PCI. The proposed clinical parameter SI correlates with patients' prognosis and could therefore be used as a simple indicator of mortality risk of acute myocardial infarction.
The simplicity of this proposed index makes its use accessible in large-scale clinical practices for risk stratification during first contact with patients