What does the term "tachycardia" refer to?

The term "tachycardia" specifically refers to an abnormally fast heart rate, which is typically defined as a heart rate exceeding 100 beats per minute in adults. This condition can result from various factors such as stress, anxiety, fever, anemia, or underlying heart conditions. Tachycardia may be a normal physiological response to certain stimuli, such as exercise or excitement, but it can also indicate pathological issues, especially if it occurs at rest or is accompanied by other symptoms like chest pain or shortness of breath. Understanding tachycardia is crucial in emergency medical situations, as it often requires assessment and potential intervention, particularly if it compromises cardiac function or suggests underlying health issues.