Inclusion criteria:
vaginal bleeding
Term singleton pregnancy with cephalic presentation
Not having obvious cephalopelvic disproportion
Not having any fetal heart rate disorders and meconium excretion when entering the study
Optimal non-stress test
estimated weight of fetus 2500-4000 grams
Not having sever IUGR or absence of placenta grading 3 or more
Not having asthma, glaucoma, tuberculosis, adrenal insufficiency and hepatitis
Not having active genital herpes, HIV and genital herpes
having no psychological disorders based on the statements of the mother/companions and medical documents
not having fever and history of caesarean section
No oxytocin infusion
Not having heart diseases, blood pressure, pre-eclampsia, multiple sclerosis, overt or gestational diabetes, rheumatism
not having placenta previa , myoma, uterine abnormality, or fetal abnormality
intact amniotic sac
mothers age 18-40
BMI less than 30
Not taking herbal medicines to induce labor during 24 hours before induction (such as saffron and cumin)
Signing the consent form
Iranian nationality
Exclusion criteria:
non satisfying pattern of FHR or meconium excertion during study
applying vacuum for head pulling
the occurrence of cesarean section
Mother's unwillingness to continue participating in the study
The occurrence of any problem that deviates from the normal course of labor, such as bleeding, maternal fever or hypertension