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Figure 1 Incidence of clinical and angiographic predictors of high risk. Clinical high risk predictors were present in 53.7% of 506 procedures (shown in middle layer); angiographic high risk predictors were present in 49.4% (lower layer). Both clinical and angiographic high risk predictors were present in 33.5% (shown in black). Only 30.4% had neither clinical nor angiographic predictors of high risk (upper layer). *Clinical high risk-Killip class 3–4, age 75 years, anterior infarction or prehospital ventricular fibrillation. Angiographic high risk: ejection fraction <45% or left main or three-vessel disease.