What is the first-line treatment for tachycardia? There are many options. However, the treatment depends on the type of tachycardia, the cause, and any underlying conditions. In atrial fibrillation — ...

Tachycardia refers to a fast resting heart rate, usually over 100 beats per minute (bpm) in adults. Some people experience no symptoms, but others may notice palpitations and lightheadedness, among ...