Tachycardia or tachyarrhythmia is used to describe the presence of cardiac rhythm abnormality in states when cardiac rate is increased to >100 bpm.
Divided into supraventricular and ventricular tachycardia.
Signs and symptoms related to rapid heart rate are altered sensorium,
angina, shortness of breath, myocardial infarction, hypotension and
other signs of shock (eg cold clammy skin, low urine output), heart
failure or pulmonary congestion.