recent episode of chest pain with pain into L arm and neck, with feeling of pressure in chest. Relieved with nitro x3. All blood work normal. ECG done at time of episode showed inverted T waves.But echo showed Grade I L ventricular diastolic dysfunction; mitral annular calcification; and mild thickening of both anterior and posterior mitral valve leaflets. Chest pressure continues off and on, but no more pain. Have always been active. But last 2 months notice I tire more easily and often fall asleep while sitting. What gives?