Premature Birth: Births made before the thirty-seven weeks of pregnancy are complete are called premature births.
Premature Baby: Babies born before completing the thirty-seven-week period in the mother's womb are called premature babies.
Premature Baby Degrees:
a) Group 1 extremely premature babies; Premature babies born between 24-31 weeks
b) Group 2 moderately premature babies; Premature babies born between 32-35 weeks
c) Group 3 borderline premature babies; Premature babies born between 36 and 37 weeks
Premature Baby Degrees by Birth Weight:
a) Low birth weight; Premature baby weighing less than 2500 grams at the time of birth
b) Very low birth weight; Premature baby weighing less than 1500 grams at the time of birth
c) Extremely low birth weight; Premature baby weighing less than 1000 grams at the time of birth
The Most Important Doctor Checks in Premature Baby:
a) Eye Examination
b) Physical Examination
c) Neurological Examination
d) Hearing Examination
Source : Mother and Baby Books