Evaluating Arrhythmia Risk in Patients with Chronic Obstructive Pulmonary Disease Treated with Aclidinium/Formoterol Fumarate and Other Inhaled Bronchodilators: A Post-Authorization Safety Study

CA and AF risks were increased for most study medications compared with LABA. Increased risks of CA and AF for several medications relative to LABA, LAMA, or LAMA/LABA may be driven by differences in baseline characteristics (eg, COPD severity).