Maternal intravenous fluids and postpartum breast changes: a pilot observational study.

Area of Science:

• Obstetrics and Gynecology
• Lactation and Breastfeeding Research
• Perinatal Nursing

Background:

• High breastfeeding initiation rates in Canada (87%) are challenged by early cessation (21% by one month).
• Breast engorgement and edema are significant contributors to breastfeeding difficulties and early weaning.
• Understanding factors influencing postpartum breast changes is crucial for supporting breastfeeding mothers.

Purpose of the Study:

• To investigate the association between intrapartum intravenous (IV) fluid administration and postpartum breast swelling in the first 10 days.
• To assess the feasibility and need for a larger-scale study on this topic.
• To explore the relationship between maternal IV fluid exposure and infant outcomes.

Main Methods:

• Prospective, longitudinal, observational cohort pilot study with repeated measures.
• Inclusion criteria: first-time mothers, single healthy newborn, spontaneous vaginal birth.
• Data collected daily from admission to postpartum day 10; linear regression used to analyze IV therapy and breast edema.

Main Results:

• Mothers receiving IV fluids during labor exhibited greater postpartum breast edema.
• These women reported increased breast firmness and tenderness compared to those without IV fluids.
• Perceived breast fullness in the IV fluid group was attributed to edema, not engorgement or lactogenesis II.

Conclusions:

• Intravenous fluid administration during labor and postpartum is linked to increased breast edema in mothers.
• Findings support the need for a larger study to confirm and expand upon these results regarding IV fluids and postpartum breast swelling.
• This research highlights a potential modifiable factor influencing breastfeeding comfort and duration.