TNNI3 and chronic obstructive pulmonary disease: Among individuals with COPD, the cumulative mortality was 26.5% in those with hs-cTnI > 5 ng/L alone, 16.3% in those with ischemic ECG abnormalities alone and 43.5% in those with both hs-cTnI > 5 ng/L and ischemic ECG abnormalities.