This will be a retrospective two-cohort study to determine the effect of chronic antihypertensive therapy on new onset atrial fibrillation and clinical outcomes in septic shock. The two cohorts will be septic shock patients that were: 1) not on either a chronic β-blocker or angiotensin-converting-enzyme inhibitor (ACE inhibitor) or 2) on a chronic β-blocker, on chronic ACE-Inhibitor, or on both chronic β-blocker and ACE-inhibitor
