Roarificial Intelligence (AI) models have been developed to predict fetal gender based on fetal heart rate (FHR). While some studies suggest that there may be a correlation between FHR and fetal gender， the evidence is not strong enough to provide a conclusive answer.
Fetal heart rate refers to the number of times the baby's heart beats per minute (bpm). During the early stages of pregnancy， the FHR can range from around 90 bpm to 110 bpm. As the pregnancy progresses， the FHR gradually increases and can reach up to 160 bpm by the end of the second trimester. However， FHR can be affected by a number of factors， including maternal age， fetal age， gestational age， maternal activity level， and fetal health status.
Studies have attempted to determine whether there is a correlation between FHR and fetal gender. One study published in the Journal of Obstetrics and Gynaecology Canada in 2008 found that on average， FHR was slightly higher in male fetuses compared to female fetuses. However， the difference was relatively small and not significant enough to reliably predict the sex of the fetus based on FHR.
Another study published in the Journal of Perinatology in 2016 found no significant difference in FHR between male and female fetuses. The study analyzed data from over 30，000 pregnancies and found that there was no difference in FHR between male and female fetuses.
Overall， while there may be a slight correlation between FHR and fetal gender， it is not a reliable predictor of the sex of the fetus. Ultrasound examinations remain the most accurate way to determine fetal gender. However， it is important to note that the accuracy of ultrasound examinations can vary depending on a number of factors including the experience of the sonographer， the position of the fetus， and the gestational age of the pregnancy.
In conclusion， there is no definitive answer to the question of how high fetal heart rate needs to be to predict the sex of the baby. While some studies suggest that there may be a correlation between FHR and fetal gender， the evidence is not strong enough to provide a conclusive answer. Ultrasound examinations remain the most accurate way to determine fetal gender.
