International Board of Certified Lactation Consultant (IBCLC) Practice Exam

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Approximately what percentage of the breast's blood supply comes from the internal mammary artery?

The correct answer is: 60%

The internal mammary artery plays a significant role in supplying blood to the breast. Research indicates that approximately 60% of the breast's blood supply is derived from this artery. This is important for lactation consultants to understand, as adequate blood flow is crucial for breast health, milk production, and overall function. Knowledge of the internal mammary artery's contribution helps in assessing conditions that may affect breastfeeding and in understanding the vascular anatomy related to surgical interventions in the breast. Additionally, this understanding aids in managing any complications arising during lactation or postpartum recovery. The percentage signifies that a substantial portion of the breast's perfusion relies on this particular vessel.