Tachycardia is defined as what?

Tachycardia is defined as what?

• A. Low blood pressure
• B. Irregular heartbeat
• C. Slow heart rate
• D. Fast heart rate

Answer: (D)

Tachycardia is a fast heart rate. In adults at rest, a heart rate above about 100 beats per minute is considered tachycardia, while normal resting rates are roughly 60–100 bpm (athletes may run lower). It can be a normal response to exercise, fever, or stress, but persistent tachycardia can signal dehydration, anemia, thyroid overactivity, or heart rhythm problems. The other descriptions refer to different issues: a slow heart rate is bradycardia, an irregular heartbeat indicates an arrhythmia, and low blood pressure is a separate condition.

Tachycardia is a fast heart rate. In adults at rest, a heart rate above about 100 beats per minute is considered tachycardia, while normal resting rates are roughly 60–100 bpm (athletes may run lower). It can be a normal response to exercise, fever, or stress, but persistent tachycardia can signal dehydration, anemia, thyroid overactivity, or heart rhythm problems. The other descriptions refer to different issues: a slow heart rate is bradycardia, an irregular heartbeat indicates an arrhythmia, and low blood pressure is a separate condition.