<unk>  symptoms are the result of a restriction in the size of the affected coronary<unk> . The<unk>  leads to a collection of blood, or hematoma, between the layers of the<unk>  wall. The hematoma does not carry oxygen to the heart muscle but instead forms a "false lumen" that restricts the flow of blood through the "true lumen" to the heart muscle. As yet, there is no consensus on why the hematoma develops in the first place. The restriction limits the availability of oxygen and nutrients to the heart muscle, or myocardium. As a result, the myocardium continues to demand oxygen but is not adequately supplied by the coronary<unk> . This imbalance leads to ischemia, damage, and eventually death of myocardium, causing a heart attack (myocardial infarction).
Spontaneous coronary artery dissection
Subacute bacterial endocarditis
Left ventricular thrombus
Libman–Sacks endocarditis
Coronary artery aneurysm
Nonbacterial thrombotic endocarditis
Coronary steal
Primary ventricular fibrillation