Whether it is dangerous for a preterm baby not to pass stool depends on the specific situation. It is normal to pass fetal stool within 24 hours of birth, but if it takes more than 24 hours, it is necessary to consider congenital disorders (e.g., congenital megacolon, etc.).
Both preterm babies and newborns will pass meconium within 24 hours of birth. If the stool is not passed, it is considered to be caused by a disease, most commonly seen in congenital megacolon, which often results in the absence of a bowel movement due to the weak digestive function of the gastrointestinal tract.
In addition, it may be due to the thick feces, often manifested as intestinal obstruction, constipation and other symptoms, if not treated in a timely manner is more dangerous.
If the preterm baby is not able to pass stool for a long time, it should go to the hospital in time, cooperate with the doctor to take the relevant examination, clear diagnosis and timely treatment.