Using Coronary Artery Calcium to Predict Cardiovascular Events in COPD
The CAC score may be a better predictor for cardiovascular events in patients with COPD than the Framingham index.
Coronary artery calcium (CAC) may be the best noninvasive risk marker for predicting a major cardiovascular event in patients with chronic obstructive pulmonary disease (COPD), according to a study published in Respiratory Research.
Researchers prospectively evaluated 287 individuals with COPD and a history of current or past smoking of at least 10 pack years for a median of 65 months to evaluate the prognostic value of noninvasive risk markers in patients with COPD.
A univariable analysis demonstrated that age, hypertension, low-density lipoprotein cholesterol, total cholesterol, C-reactive protein levels, and coronary calcium score were all noninvasive CV risk markers independently associated with the risk for a major CV event with P values of .001.
However, the multivariable analysis demonstrated CAC as measured by a low-dose chest computed tomography scan was best for independently predicting the risk for a major cardiovascular event in patients with COPD compared with the Framingham score (hazard ratio; 95% CI, 1.32; 1.19-1.46, P <.001).
The investigators concluded that clinicians should consider incorporating CAC levels to identify patients at high risk for a major cardiovascular event.
Zagaceta J, Bastarrika G, Zulueta J, et al. Prospective comparison of non-invasive risk markers of major cardiovascular events in COPD patients. Respir Res. 2017;18(1):175.