People with TIC most often present with symptoms of congestive heart failure and/or symptoms related to their irregular heart rhythm. Symptoms of congestive heart failure can include shortness of breath, ankle swelling, fatigue, and weight gain. Symptoms of an irregular heart rhythm can include palpitations and chest discomfort. The timecourse of TIC is most well-studied in experiments on animals. Researchers have found that animals began to exhibit abnormal changes in blood flow after just one day of an artificially generated fast heart rate (designed to simulate a tachyarrythmia). As their TIC progresses, these animals will have worsening heart function (e.g.: reduced cardiac output and reduced ejection fraction) for 3–5 weeks. The worsened heart function then persists at a stable state until the heart rate is returned to normal. With normal heart rates, these animals begin to demonstrate improving heart function at 1–2 days, and even complete recovery of ejection fraction at 1 month. Human studies of the timecourse of TIC are not as robust as animal studies, though current studies suggest that the majority of people with TIC will recover a significant degree of heart function over months to years.
Tachycardia-induced cardiomyopathy
Alcoholic cardiomyopathy
Coxsackievirus-induced cardiomyopathy
Arrhythmogenic cardiomyopathy
Uremic pericarditis
Ischemic cardiomyopathy
Viral cardiomyopathy
Diabetic cardiomyopathy