Early date for detection of fetal hea :
1st Trimester Scan: Assessment of Early Pregnancy and Fetal Viability: Gestational sac - 4.5 weeks, Yolk sac- 5 weeks, Fetal node- 6 weeks, Fetal hea- 6 weeks Reference: Dutta's Textbook of Obstetrics 7th edition page no 68
6.0-6.5 weeks
6.5-7 weeks
7.1-7.5 weeks
8 weeks
Diagnosis in obstetrics