As a medical professional with expertise in cardiology, I can provide you with information on what is considered a fast heart rate.
A normal resting heart rate for adults ranges from 60 to 100 beats per minute (BPM). However, a fast heart rate, also known as
tachycardia, can be defined as a heart rate that is higher than the normal range. For adults, a heart rate above 100 BPM is generally considered fast. In children, the definition of a fast heart rate can vary based on age, but it is typically considered tachycardia when it exceeds 120 BPM for infants and 90 BPM for older children.
It's important to note that a fast heart rate can be a temporary response to physical activity, stress, certain medications, or substances like caffeine or nicotine. However, if a fast heart rate persists or is accompanied by symptoms such as shortness of breath, chest pain, dizziness, or fainting, it should be evaluated by a healthcare professional.
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