Investigation of the Effect of Asthma on Mortality and Morbidity After Coronary Artery Bypass Surgery

Özet

OBJECTIVES: No studies have been specifically conducted on asthma patients undergoing cardiac surgery for assessing mortality andmorbidity. Distinct effects of cardiac surgery lead to negative effects on respiratory functions, putting patients with existing lung diseasesunder an increased risk. We aimed to investigate whether asthma patients are under higher risk for mortality and possible complicationsafter coronary artery bypass graft (CABG) surgery than patients without asthma.MATERIALS AND METHODS: The study included patients who underwent elective CABG surgery at our hospital between November2014 and November 2015. Patients with a history of asthma were verified with physical examination and spirometric measurements bya single. The asthma group was compared with the controls in terms of mortality and morbidities.RESULTS: Asthma patients were extubated later than control patients (p=0.028); however, prolonged intubation (longer than 24 h) frequency was not different (p>0.05). Asthma patients required longer stay in the intensive care unit (ICU) (p=0.003) than controls. Theincidence of perioperative asthma exacerbations was significantly lower in patients in whom asthma was previously well-controlled. Theincidence of postoperative sibilant rhonchi was lower in patients in whom asthma was under control than in those in whom asthma waspartially controlled (p=0.020).CONCLUSION: Asthma is associated with longer ICU stay and asthma-related pulmonary complications after CABG surgery. Preoperative evaluation of asthma patients scheduled for CABG surgery requires consideration of the control status of asthma. Studies with morecontrols are needed to provide further evidence on the topic.