The signal then travels through the atria to the atrioventricular (AV) node and into the ventricles, causing them to contract and pump blood. In a typical heart rhythm, a tiny cluster of cells at the sinus node sends out an electrical signal. Sensation of a fast or pounding heartbeat.If you feel like your heart is beating too fast, make an appointment to see a health care provider.Ĭall 911 or your local emergency number if you have any of the following symptoms for more than a few minutes: For example, the heart rate may increase with exercise. Sometimes a fast heartbeat, or heart rate, isn't a concern. It's important to get a prompt diagnosis and care. It's often discovered by chance during a heart test. This condition is called Wolff-Parkinson-White (WPW) pattern. Some people with an extra electrical pathway don't have signs or symptoms of a fast heartbeat. Blue or gray coloring to the skin, lips and nails (cyanosis).Signs and symptoms of WPW syndrome in infants can include:
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