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ORIGINAL ARTICLE
Year : 2017  |  Volume : 4  |  Issue : 2  |  Page : 54-58

Prospective randomized study of the effect of nebivolol on the incidence of late invasive mechanical ventilation in ischemic heart disease patients with acute exacerbation of chronic obstructive pulmonary disease


1 Critical care Specialist, Alexandria University, Egypt
2 Professor of Chest Diseases, Alexandria University, Egypt
3 Professor of Critical Care Medicine, Alexandria University, Egypt

Correspondence Address:
Bishoy T.T Tadross
128 Taowniat Smouha, Smouha, Alexandria
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/roaic.roaic_5_16

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Background Chronic obstructive pulmonary disease (COPD) is the third leading cause of death in the USA and acute exacerbations result in more than 800 000 hospitalizations annually. The combination of COPD treatment often coexists with treatment for congestive heart failure or ischemic heart disease (IHD) and present complex therapeutic challenges. β2-Agonists, which are frequently used in the treatment of COPD, have the potential for adverse cardiovascular effects including ischemic events and arrhythmias. β-Blocker therapy improves symptoms and survival among patients with IHD and congestive heart failure, but is frequently withheld in patients with COPD. During an acute exacerbation of chronic obstructive pulmonary disease (AECOPD), patients may be particularly vulnerable to develop acute cardiac events due to increased use in β2-agonists, tachycardia, and hypoxemia. The addition of a cardioselective β-blocker, especially nebivolol, may have a cardioprotective effect in this population, blunting the cardiac toxicity of the β2-agonists. We evaluated the association of the cardioselective β-blocker nebivolol treatment with the incidence of late invasive ventilation among patients with IHD who were hospitalized for an AECOPD. Hypothesizing that the nebivolol as a highly selective β-blocker is not deleterious and is safe in the setting of AECOPD, we also compared the outcomes with patients who are not treated with nebivolol in the setting of AECOPD. Objective The aim of the paper was to study the incidence of late invasive mechanical ventilation among a group of ischemic heart disease patients with AECOPD who received oral nebivolol and compare the results with another group of patients with the same diagnosis who did not receive it. Patients and methods This study was conducted on 90 adult patients of both sexes, who were admitted to the Critical Care Medicine Department of Alexandria Main University Hospital after fulfilling the inclusion and exclusion criteria and obtaining an informed consent from patients’ relatives, and from the local ethics committee. Patients were subjected to full routine examination and categorized into two groups; each group comprised 45 patients using the sealed-envelop technique as a method for randomization of participants in both groups. Group I, patients who received oral nebivolol tablets on the first and/or second day of admission. Group II, patients who did not receive oral nebivolol tablets on the first and/or second day of admission. Results In comparing the patients in both groups, there was no statistically significant difference between them with regard to age, sex, comorbidities, and Acute Physiology and Chronic Health Evaluation II score on admission. Incidence of late invasive ventilation was the same between the case and the control groups. There was no significant difference in causes of intubation between both groups. There was no statistically significant reduction in the duration of invasive ventilation, ICU and hospital stay between both studied groups. Acute ischemic events showed no statistically significant reduction between case and control groups. Regarding in-hospital and 28-day mortality, there was no statistically significant difference between both studied groups. Conclusion Our results suggest that among the studied population of patients with AECOPD with underlying coronary artery disease, using oral nebivolol tablet seems to be safe as it does not cause worsening of the clinical condition of the patients regarding the incidence of late invasive mechanical ventilation or incidence of acute ischemic events. In addition, it does not affect the duration of ICU or hospital stay and showed no effect on in hospital or 28-day mortality.


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