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Related Experiment Videos

Breast-feeding and maternal cardiovascular function.

E S Mezzacappa1, R M Kelsey, M M Myers

  • 1Behavioral Medicine Program, Columbia University, New York, NY 10032-3784, USA. Elizabeth.Mezzacappa@sunysb.edu

Psychophysiology
|September 21, 2002
PubMed
Summary

Breast-feeding significantly impacts maternal cardiovascular function, affecting cardiac output and blood pressure differently than bottle-feeding. These changes may be linked to oxytocin release during lactation.

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Area of Science:

  • Physiology
  • Cardiovascular Health
  • Maternal Health

Background:

  • Breast-feeding is a critical aspect of maternal and infant health.
  • Understanding the physiological impact on the mother is essential for comprehensive maternal care.
  • Previous research has not fully elucidated the cardiovascular adjustments during breast-feeding.

Purpose of the Study:

  • To investigate the effects of breast-feeding on maternal cardiovascular function.
  • To compare cardiovascular responses between breast-feeding and bottle-feeding mothers.
  • To explore potential hormonal influences, such as oxytocin, on these cardiovascular changes.

Main Methods:

  • Two studies were conducted comparing breast-feeding and bottle-feeding women.
  • Cardiovascular parameters including preejection period (PEP), heart rate (HR), cardiac output (CO), and total peripheral resistance (TPR) were measured.

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  • Blood pressure (BP) was also assessed before and after feeding sessions in a within-subjects design.

    • Main Results:

    • Breast-feeding mothers exhibited higher cardiac output (CO) compared to bottle-feeding mothers.
    • During stressors, breast-feeding women showed greater decreases in CO and increases in total peripheral resistance (TPR).
    • Both feeding methods increased systolic blood pressure (BP), but breast-feeding resulted in a higher systolic BP and a decrease in heart rate (HR).

    Conclusions:

    • Breast-feeding demonstrably alters maternal cardiovascular function.
    • The observed cardiovascular changes suggest a physiological response distinct from bottle-feeding.
    • Oxytocin is proposed as a potential mediator of these breast-feeding-induced cardiovascular effects.