Factors associated with nipple trauma in the maternity unit

To identify factors associated with nipple trauma in women breastfeeding exclusively in a maternity unit.

This was a case-control study that recruited 146 recently-delivered mothers in rooming-in wards: 73 cases, defined as women with nipple trauma, and 73 controls, defined as women free from this pathology. Women breastfeeding exclusively were tested daily for a diagnosis of nipple injury, identified using a magnifying glass. Sociodemographic, obstetric and neonatal variables were studied. A logistic regression model was used for statistical analysis.

Cases and controls proved to be comparable in terms of their sociodemographic variables, although the women with nipple trauma were more likely not to be living with a partner. The following variables were found to be factors associated with nipple trauma: primiparity (OR 3.16; 95%CI 1.19-8.42), not living with a partner (OR 3.25; 95%CI 1.18-8.93), turgid and/or engorged breasts (OR 12.31; 95%CI 4.48-33.78), semi-protruding and/or malformed nipples (OR 4.69; 95%CI 1.50-14.62), and depigmentation of nipples (OR 13.98; 95%CI 4.43-44.06).

Primiparity, not living with a partner, turgid and/or engorged breasts, semi-protruding and/or malformed nipples, and depigmentated nipples are associated with nipple trauma.