  DMT stands for Dimethyltryptamine, it is a chemical produced in some mammals and plants that can cause intense hallucinogenic effects.It can also be made to be smoked, â¦ snorted, and injected. DMT stands for Dimethyltryptamine, it is a chemical produced in some mammals and plants that can cause intense hallucinogenic effects. It can also be made to be smoked, â¦ snorted, and injected.
There are many different types of abnormal heart rhythm. What type you have depends on where in your heart the rhythm (electrical impulse) starts, and whether it causes your heart to beat too fast, or too slow. The most common abnormal rhythm is atrial fibrillation.
If the heart beats more rapidly than normal, this arrhythmia is called tachycardia. An unpleasant sensation in the heart, whether rapid or slow, regular or irregular, and of which one is consciously aware, is called a palpitation. Physical Causes of Rapid or Irregular Heart Rate. 1  arrhythmia.  postmyocardial infarction.