Gynaecology & Obstetrics Diagnosis in obstetrics f85c7826 Abnormal Fetal tachycardia is defined as: A Fetal hea rate >= 160 bpm B Fetal hea rate >= 180 bpm C Fetal hea rate >= 200 bpm D None of the above High-Yield Explanation Fetal hea rate above 180bpm is considered as abnormal tachycardia. Refer page no 519 of Text book of obstetrics,sheila balakrishnan,2 nd edition.