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Lung India Official publication of Indian Chest Society  
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ORIGINAL ARTICLE
Year : 2016  |  Volume : 33  |  Issue : 1  |  Page : 53-57

Prognostic value of cardiac troponin I during acute exacerbation of chronic obstructive pulmonary disease: A prospective study


Department of General Medicine, Kempegowda Institute of Medical Sciences, Bengaluru, Karnataka, India

Correspondence Address:
Saleha Noorain
42, Sirsi Road, Chamarajpet, Bengaluru - 560 018, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-2113.173052

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Background: Chronic obstructive pulmonary disease (COPD) is a major cause of mortality and morbidity. It is the fourth leading cause of death worldwide. Acute exacerbations of COPD are common and are associated with worsening lung function and mortality. Objectives: To evaluate the prevalence of elevation of cTnI in patients admitted with acute exacerbation of COPD and to study its association with the need for ventilator support, duration of hospital stay, and in-hospital mortality. Methods: In a prospective design, 50 patients admitted to our hospital with acute exacerbation of COPD were included. cTnI was assayed in a blood sample obtained at admission and 24 h later. Levels above 0.017 µg/L were taken as positive. The following data were also recorded–demographic data, pattern of tobacco use, clinical symptoms and signs, comorbidities, Glasgow Coma Scale, arterial blood gas, electrocardiogram/two-dimensional echocardiography, chest X-ray, and peak expiratory flow rate. Results: Among the 50 patients, 4 were females, and 46 were males. cTnI was positive in 32% of patients with a mean value of 0.272. Patients with cTnI positive were taken as Group I and those with negative were included in Group II. Prevalence of comorbidities was higher in cTnI positive group, so was the duration of COPD. cTnI elevation correlated significantly with the need for ICU admission and ventilator support. No significant difference was found in the duration of ventilator support, hospital stay, and in-hospital mortality. Conclusion: cTnI is elevated in a significant subset of patients with acute exacerbation of COPD. Duration of their illness was longer, higher incidence of ischemic heart disease was also found in these patients. Patients with cTnI elevation are more likely to require ICU care and ventilator support. However, it did not predict in-hospital mortality. Thus, it can be used as a marker to identify high-risk patients during acute exacerbation of COPD.


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