What does the term tachycardia indicate about an individual's heart rate?

Tachycardia specifically refers to a condition where an individual's heart rate is elevated, typically defined as a resting heart rate exceeding 100 beats per minute in adults. This condition can occur due to various factors such as stress, anxiety, physical exertion, fever, or underlying medical conditions. Recognizing tachycardia is crucial, as it can be a sign of an underlying health issue that might require medical attention. In contrast, a slow heart rate is referred to as bradycardia, and normal heart rates typically range from 60 to 100 beats per minute, while an irregular heart rate refers to arrhythmias, which denote abnormal rhythms rather than simply the speed of the heart. Therefore, the appropriate understanding of tachycardia highlights its association with rapid heart rates.