Fetal heart rate exceeding 160 beats/min occasionally will not have any effect on the fetus, fetal heart rate exceeding 160 beats/min frequently may lead to intrauterine hypoxia.
Normal fetal heart rate is 110~160 beats/min. Fetal heart rate exceeding 160 beats/min after fetal heart rate monitoring lasts for a relatively short period of time and only occurs occasionally, which is a physiological phenomenon and will not have any effect on the fetus.
Fetal heart rate of more than 160 beats/minute after fetal heart rate monitoring, lasting more than 10 minutes or even longer time should be considered as abnormal fetal heart rate, which may be caused by intrauterine oxygen deprivation of the fetus triggered by maternal fever, taking medication, umbilical cord wrapping around the neck, umbilical cord torsion and other reasons.
Intrauterine hypoxia will lead to delayed growth and development of the fetus, and prolonged hypoxia may lead to poor blood circulation in brain tissues, which, if not treated in time, will lead to necrosis of brain tissues, and increase the number of adverse consequences, such as fetal arrest, ischemic-hypoxic encephalopathy, cerebral palsy, and so on.
Therefore, it is important to observe any abnormalities in fetal heart rate during pregnancy and consult a doctor for timely diagnosis and treatment.