Towards refining of the proposed ECG-based index of coronary microvascular resistance (ECGMVR)

Association of spontaneous coronary artery dissection and takotsubo syndrome: What has been suspected has been found

There is ample literature revealing an association of SCAD with TTS, while it is not clear whether these 2 pathological entities are mechanistically linked in the sense that the one triggers the other. Considering that physical/emotional stress triggers TTS, it is plausible that stress related to SCAD, could result in the emergence of TTS. Conversely, it has been speculated that the junction between hypercontractile and akinetic/dyskinetic myocardium regions in TTS could lead to a "hinge pivoting point", imparting vascular disruption in coronary arteries, crossing these abutting myocardial planes, in susceptible individuals, causing SCAD.