Abstract Background and Aims: The changes of autonomic nervous activity during bronchoscopic procedures are closely related to the development of cardiovascular complications. We aimed to evaluate the changes of autonomic nervous activity during bronchoscopic procedures using R-R interval variability from electrocardiograms (ECGs) obtained during diagnostic bronchoscopy. Methods: Twenty-four patients who underwent bronchoscopy were included.Continuous ECG was recorded prior to, during ... Read more