Complications of coronary heart disease:
1) Arrhythmia

You will feel irregular heartbeats. In healthy people, they don’t feel their heartbeats because it’s regular all over time. They can feel it only with palpitation. There are many subtypes of arrhythmia, but the basic types are tachycardia and bradycardia.Tachycardia means a rapid heart rate of more than 100 beats per minute, while bradycardia means a heart rate slower than 60 beats per minute. You may feel fluttering, fast or slow heartbeats, shortness of breath, fatigue, sweating, and anxiety.