Irregular heartbeats are usually nothing to worry about, but talk to your doctor about your concerns.
An arrhythmia is an irregular heartbeat. Doctors sometimes discover that a baby has an irregular heartbeat, on an ultrasound, with a Doppler (a device that amplifies the sound of a baby's heartbeat), or with a stethoscope. It sounds as if the heart is sometimes skipping a beat. This is usually nothing to worry about; babies tend to outgrow their prenatal arrhythmias and have healthy hearts at birth.
Originally published in You & Your Baby: Pregnancy.
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