The causes of increased heart rate in newborns include physiologic or pathologic factors.
The normal heart rate of a newborn is 120~140 beats per minute. Factors leading to the increase in heart rate of newborns include physiological and pathological factors, and the heart rate of newborns may increase when they are hungry, active, or crying.
Some diseases may also lead to increased heart rate in newborns, such as infection, acute fever, severe anemia, thyroid dysfunction, congenital heart disease, myocarditis, etc., which may lead to different degrees of heart rate acceleration in newborns.
Abnormal arrhythmias such as supraventricular tachycardia, atrial tachycardia, or ventricular tachycardia can also cause tachycardia.
Newborns with tachycardia should be seen by a doctor for prompt medical attention and treatment, as well as a balanced nutritional regimen and warmth.