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[The Phenotype of Chronic Obstructive Pulmonary Disease With Frequent Exacerbations in the Aspect of Long-term Percutaneous Coronary Intervention Results].

Kardiologiia 2017 March
OBJECTIVE: To evaluate the results of percutaneous coronary interventions (PCI) in patients with coronary heart disease (CHD) and chronic obstructive pulmonary disease (COPD), depending on the frequency of exacerbations of COPD.

MATERIALS AND METHODS: We enrolled in this prospective study 103 patients with CHD and COPD who underwent PCI (n=103) including 25 who satisfied criteria of COPD phenotype with frequent exacerbations (main group). Analysis included comparison of rates and times to major adverse cardiac events (MACE - myocardial infarction, stroke, cardiac death, repeat revascularization) in the main group and other patients. Clinical and functional features of patients with major adverse cardiac events were also analyzed.

RESULTS: Study groups did not differ significantly on demographic characteristics and the presence of comorbidity. MACE frequency was almost 2 times higher in the main group (relative risk 1.87; 95% confidence interval (CI) 1.1-3.3). There was a tendency to higher rate of MACE among patients with history of more or equal 1 COPD exacerbations in a year (40% vs. 24%, p=0.09). The following clinical and functional characteristics of COPD, were associated with MACE in remote period after PCI: frequency of exacerbations, results of the COPD Assessment Test, exercise capacity, forced expiratory volume in 1 sec. Conclusion/ COPD phenotype with frequent exacerbations in patients with CHD undergoing PCI is associated with increased risk and earlier occurrence of MACE.

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