IJCM  Vol.3 No.7 , December 2012
New Onset of Atrial Fibrillation in a Medical ICU: Prevalence and Risk Factors
Objectives: To evaluate the prevalence and the risk factors of new onset atrial fibrillation (AF) in a single medical ICU. Methods: A prospective observational study was conducted in a 10 bed single medical ICU over a period of 18 months. All patients with sinus rhythm admitted in the medical ICU were included. Those presenting with any arrhythmia on admission, having a PACEMAKER or having undergone a recent cardiothoracic surgery were excluded. Results: Of the 377 patients included on the study, atrial fibrillation occurred in 26 patients (7%). Patients who developed AF were older, had higher severity scores on admission, and required significantly more fluids, catecholamine, and mechanical ventilation. They had a longer ICU and hospital LOS. ICU mortality was significantly higher in AF patients. Five inde- pendent risk factors of AF were identified by multivariate analysis: advanced age, the presence of COPD, sepsis, car- diogenic shock, and hypoxemia. Conclusion: AF occurs in approximately 7% of medical critically ill patients and is associated with age, a history of COPD, the presence of sepsis, cardiogenic shock and hypoxemia. AF occurs in more critically ill patients and is associated with increased morbidity and mortality.

Cite this paper
S. Ayed, S. Atig, N. Tilouche, H. Ali, R. Gharbi, M. Hassen and S. Elatrous, "New Onset of Atrial Fibrillation in a Medical ICU: Prevalence and Risk Factors," International Journal of Clinical Medicine, Vol. 3 No. 7, 2012, pp. 582-586. doi: 10.4236/ijcm.2012.37105.
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