Breast feeding as a natural analgesia Section: Originals How to quote Miguel Martín S, Sánchez de la Ventana MA. El amamantamiento como analgesia natural. RIdEC 2013; 6(2):5-16. Authors1Susana Miguel Martín, 1Mª Ángeles Sánchez de la Ventana Position 1Enfermera. Centro de Salud Sierra de Guadarrama, Collado Villalba (Madrid, España). Contact email: susanamiguelmt@yahoo.es Abstract Purpose: The main objective was to measure the impact of breast feeding on pain levels in newborns undergoing heel lance, as compared with pain in a control group. Secondary objectives were to describe mothers\' knowledge on breast feeding and to instruct on breast feeding technique to mothers in the intervention group.Material and methods: This was a comparative randomized pilot study.Observational scale LLANTO was used to measure pain levels both in the control group and in the intervention group. A test to evaluate knowledge on breast feeding was administered to enrolled mothers. A validated card was used to record observation of a breast feed in the intervention group. Results:- Control group: 11 infants (91.7%) showed severe pain and no infant showed pain absence.- Intervention group: Only one infant (7.7%) showed severe pain (p < 0.001) and four showed pain absence (31%) (p = 0.03).Conclusions: all infants receiving breast feeding showed less pain than controls; a knowledge deficiency regarding breast feeding was detected; breast feeding was correctly performed by most mothers. Keywords: analgesia; breast feeding; pain in infants Versión en Español Título: El amamantamiento como analgesia natural