Extreme preterm is defined as
34-36 weeks
32-33 weeks
28-31 weeks
< 28 weeks
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.
Abnormal labor