Heart rate variability during weaning from mechanical ventilation

Weaning from mechanical ventilation (MV) can be associated with cardiovascular changes including elevation of heart rate (HR) and development of arrhythmias. The behavior is not yet known of HR variability during weaning from MV comparing pressure support ventilation (PSV) and the T-tube (TT) in patients with and without heart disease. The aim of this study was to evaluate the impact on heart rate variability (HRV) in these groups of patients during PSV and TT.