Cardiovascular disease is the most common comorbidities in Chronic obstructive pulmonary disease (COPD) patients. ECG is the most popular and cheapest cardiovascular disease screening tool. Some research showed the high rate abnomal ECG in exerbation COPD patients, but there still have no research in outpatient. The descriptive cross-sectional method was used to describe the ECG changes in COPD outpatients and to find the correlation between ECG changes and the severity of 112 COPD outpatients according to GOLO 2011. An EyG score system (0-6) was developed considering: 1) P wave axis or = +90°; 2) P wave amplitude or = 2,5mm in lead Dil; 3) QRS axis or = +90°; 4) R/S ratio or or = +90° (53,6 percent), QRS axis or = +90°(33,9 percent), P wave amplitude or = 2,5mm in lead Dil (20,5 percent). The rate of abnormal ECG increase from group A to group D. ECG score significantly correlated with the low values of FEV1/FVC, FEV1. Conclusion: Not only FEV1 and FEV1/FVC ratio helps to assess the severity of disease, but also ECG would give value information on the severity of COPD so this study suggests the routine screening in COPD outpatients with ECG.
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