What does tachycardia indicate?

Tachycardia refers to a condition where the heart rate exceeds the normal range, specifically defined as a heart rate greater than 100 beats per minute (bpm) in an adult at rest. This elevated heart rate can arise from various factors, including emotional stress, physical activity, fever, or underlying medical conditions. Recognizing tachycardia is crucial as it can be an indication of the body's response to stress or a potential health issue that may require further evaluation.

In contrast, a normal heart rate for adults typically ranges from 60 to 100 bpm. A slow heart rate, defined as bradycardia, usually applies when the resting heart rate falls below 60 bpm. A heart rate within the normal range would not suggest tachycardia at all. Understanding these distinctions helps in assessing cardiovascular health and recognizing when a medical assessment may be necessary.