Most individuals with<unk>  have a favorable prognosis provided they are maintained on calcium channel blockers and/or long-acting nitrates; five-year survival rates in this group are estimated as over 90%. The Japanese Coronary Spasm Association established a clinical risk scoring system to predict outcomes for<unk> . Seven major factors (i.e. history of out of hospital cardiac arrest score = 4; smoking, angina at rest, physically obstructive coronary artery disease, and spasm in multiple coronary arteries score = 2; and presence of ST segment elevations on ECG and history of using beta blockers score = 1) where assigned the indicated scores. Individuals with scores of 0 to 2, 3 to 5, and ≥6 experienced an incidence of a major cardiovascular event in 2.5, 7.0, and 13.0% of cases.
Variant angina
Microvascular angina
Unstable angina
Coronary steal
Bundle branch block
Atopy
Palisade 
Renal angina