[Answered]: Angina STABLE Usually follows a predictable pattern

Angina STABLE Usually follows a predictable pattern. Pain generally happens at about the same point with exercise or emotional stress. Pain is usually relieved with rest or medication. UNSTABLE Unexpected chest pain at rest or without stimulating activity. If the chest pain is new, worsening or constant, there is a greater risk of having a heart attack, an irregular heartbeat (arrhythmia), and even sudden death. See doctor as soon as possible.