“…Part of the suspicion concerning such etiological links is that persons with panic disorder persist in emergency department recidivism [ 13 , 14 ] and outpatient examinations for chest pain [ 15 , 16 ] despite negative diagnostic results from coronary catheterization, electrocardiogram, or serum markers of myocardial damage [ 17 , 18 ]. These collective findings contrast to more recent evidence revealing plausible mechanisms of cardiopathogenesis attributable to panic disorder and sympathetic discharge of panic attacks, including reversible myocardial ischemia [ 19 , 20 ], diminished heart rate variability (HRV) [ 21 ], change in the QRS complex [ 22 ], especially the QT-interval [ 23 - 25 ], serum low density lipoprotein [ 26 ], microvascular disorders including coronary slow-flow [ 27 ] and microvascular angina [ 15 ], arterial stiffness [ 28 ], and also a preponderance of behavioral factors such as smoking [ 29 ], alcohol use [ 30 ], and overt exercise-avoidance behaviors [ 31 ]. The inconsistency in collective findings to date, coupled with the high coronary healthcare utilization by panic disorder patients [ 32 ], indicates that a meta-analysis is both timely and warranted.…”