What indicates a diagnosis of preterm labor?

The diagnosis of preterm labor is primarily indicated by the presence of regular uterine contractions accompanied by cervical changes. In this context, "regular uterine contractions" refers to contractions that occur at consistent intervals and demonstrate a pattern, which suggests that the body is preparing for delivery. Cervical changes, which can include effacement (thinning) and dilation (opening) of the cervix, signal that the body is transitioning towards labor.

This combination of factors is crucial because it indicates that the body is not just experiencing isolated contractions but is undergoing physiological changes associated with the onset of labor. In cases where there are just contractions without cervical changes, the situation may not be classified as preterm labor. Other factors, such as heavy vaginal bleeding or maternal fever, could indicate complications but do not directly support a diagnosis of preterm labor.