Extreme preterm is defined as
Preterm labor is defined as one where the labor stas before 37th completed week, counting from the first day of the last menstrual period Lower limit of gestation is - 20 weeks in developed countries 28 weeks in developing countries Ref: Dutta Obs 9e pg 294.
34-36 weeks
32-33 weeks
28-31 weeks
< 28 weeks
Abnormal labor