Abstract
We aimed to compare the incidence, clinical characteristics, and outcomes of patients admitted with myocardial infarction (MI), whether ST elevation MI (STEMI) or non-ST elevation MI (NSTEMI), according to the presence of chronic obstructive pulmonary disease (COPD), and to identify variables associated with in-hospital mortality (IHM). We selected all patients with MI (aged ≥40 years) included in the Spanish National Hospital Discharge Database (2016–2018). We matched each patient suffering COPD with a non-COPD patient with identical age, sex, type of MI, and year of hospitalization. We identified 109,759 men and 44,589 women with MI. The MI incidence was higher in COPD patients (incident rate ratio (IRR) 1.32; 95% confidence interval (CI) 1.29–1.35). Men with COPD had higher incidence of STEMI and NSTEMI than women with COPD. After matching, COPD men had a higher IHM than non-COPD men, but no differences were found among women. The probability of dying was higher among COPD men with STEMI in comparison with NSTEMI (odds ratio (OR) 2.33; 95% CI 1.96–2.77), with this risk being higher among COPD women (OR 2.63; 95% CI 1.75–3.95). Suffering COPD increased the IHM after an MI in men (OR 1.14; 95% CI 1.03–1.27), but no differences were found in women. COPD women had a higher IHM than men (OR 1.19; 95% CI 1.01–1.39). We conclude that MI incidence was higher in COPD patients. IHM was higher in COPD men than in those without COPD, but no differences were found among women. Among COPD patients, STEMI was more lethal than NSTEMI. Suffering COPD increased the IHM after MI among men. Women with COPD had a significantly higher probability of dying in the hospital than COPD men.
Highlights
Chronic obstructive pulmonary disease (COPD) is a major chronic condition with considerable and growing social, health, and economic consequences [1]
Incidence of ST elevation MI (STEMI) and non-ST elevation MI (NSTEMI) According to Concomitant COPD
For STEMI, the IRR was 1.09, whereas, for NSTEMI, the IRR was 1.61
Summary
Chronic obstructive pulmonary disease (COPD) is a major chronic condition with considerable and growing social, health, and economic consequences [1]. According to the most recent prevalence study with clinical measurements conducted in Spain, the overall estimated prevalence of COPD among adults aged 40 years or over was 11.8% (95% confidence interval (CI) 11.2–12.5) [3]. Much of the disease burden and healthcare use in COPD patients is related to the management of their comorbidities. The most common associated conditions include cardiovascular disease, skeletal muscle wasting, and stroke [4]. COPD is strongly linked with cardiovascular disease, myocardial infarction (MI). The estimated incidence of MI per year in Spain for the population aged 25 years or over is 2005 per 100,000 for men and 1169 per 100,000 for women [5]
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