How do you differentiate Uterine irritability, Braxton Hicks contractions, Preterm contractions and preterm labor?
Uterine irritability - low intensity, high frequency contractions
Braxton Hicks contraction - low intensity, low frequency contractions, starts as soon as 14 weeks.
Preterm contractions - pregnancy 20-36 weeks, 3 contractions in 30 minutes, <2 cm or no change in cervix, no need to treat.
Preterm labor - pregnancy 20-36 weeks, 3 contractions in 30 minutes, dilated 2 cm or changing cervix