A<unk>  is the partial or<unk> mplete obstruction of blood flow in a<unk> ronary artery. This<unk> ndition may cause a heart attack. In some patients<unk>  causes only mild pain, tightness or vague discomfort which may be ignored; however, the myocardium, the muscle tissue of the heart, may be damaged. According to Robert K. Massie's Nicholas and Alexandra: The Fall of the Romanov Dynasty, Tsar Nicholas II may have suffered a<unk>  right before he was toppled from his throne during the Russian Revolution in 1917.
Coronary occlusion
Coronary ischemia
Coronary thrombosis
Infarction
Ischemia
Coronary steal
Anemic infarct
Coronary vasospasm