Normal Fetal Heart Rate at 9 Weeks Gestation

At 9 weeks gestation, the embryonic heart rate typically ranges 110–160 beats per minute (bpm). This is detectable via transvaginal ultrasound (TVUS).

Key points:

• Rate increases from ~100 bpm at 6 weeks to peak ~170 bpm at 9–10 weeks, then gradually declines to 120–160 bpm by mid-pregnancy.
• Bradycardia (<100 bpm at 9 weeks) correlates with higher miscarriage risk.
• Variability: ±10–20 bpm normal; influenced by maternal fever, medications, fetal activity.

If heart rate is not visualized or is abnormal, follow-up scan in 1 week is standard. Always discuss findings with your obstetric provider.