Age shock index is the shock index (SI) multiplied by the patient's age in years. It is a modified shock index and can identify patients at high risk of death due to acute myocardial infarction (AMI). It gives similar results to the GRACE score; however, it's much quicker to calculate bedside.
shock index = age [years] × heart rate [beats/minute] / systolic blood pressure [mmHg]
You can also calculate the age SI using our shock index calculator - again, hit the advanced mode to expand the calculator panel.
In one paper, there's a suggestion to consider any value above 50 as an elevated age shock index. Read more