RESUMOO tamanho das mamas está relacionado com a quantidade de tecido mamário e depósitos de gordura intra e inter lobular, mas não reflecte a sua capacidade funcional.As principais hormonas que regulam a produção de leite são a prolactina, a oxitocina e o FIL (factor inibidor da lactação). Preocupações como o medo de não ter leite suficiente inibem a oxitocina e dificultam a lactação.O lactente pode regular a composição do leite obtido se puder modificar três factores: o tempo de intervalo entre as sucessivas mamadas, o volume de leite ingerido de cada vez e o acesso livre ao leite produzido por uma só mama ou nas duas.De acordo com os estudos observacionais mais recentes, o RN de termo, saudável, quando colocado sobre o abdómen da mãe, desloca-se de forma reflexa e adapta-se autónoma e perfeitamente a uma das mamas sem causar qualquer desconforto/dor à mãe. Este comportamento autónomo do bebé parece ainda estar associado a um maior grau de satisfação materna e prolongamento da amamentação.Dada a especificidade de cada díade mãe-bebé a gestão pelo cliente parece ser a resposta chave para o sucesso do aleitamento materno. ABSTRACTBreast size is related to the amount of mammary tissue and to the deposits of intra and interlobular fat, but doesn't reflect its functional ability.Prolactin, oxytocin and feedback inhibitor of lactation are the main hormones that regulate milk production. Concerns, such as fear of not having enough milk, inhibit prolactin and oxytocin and hinder lactation.The baby can regulate milk composition if he can modify three factors: time between feeds, the amount of ingested milk in each meal and free access to all the milk produced by one or both breasts.According to recent observational studies, when placed on the mother's abdomen, the term healthy newborn moves reflexively, and easily adapts to one of the breasts without causing any pain or discomfort. This autonomous behaviour of the baby seems to be associated to a higher degree of satisfaction of the mother and to an increased duration of breastfeeding.Attending to the particularity of each mother-baby dyad, client oriented management seems to be the key-answer to a successful breastfeeding.
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