Management of Healthy Newborn's Body Temperature at Birth

At birth, the newborn begins a process of adaptation to extrauterine life. One of the phases of this stabilization process is the maintenance of body temperature; indeed, the newborn passes from a warm environment (mother's womb) of around 37°C to an environment with a temperature lower (delivery room) and, therefore, must implement a series of physiological processes to be able to maintain body temperature constant and within ideal ranges through a balance between production and heat loss. Hypothermia at birth could cause risks or comorbidities such as an increased risk of infant mortality, hypoglycemia, sepsis, metabolic acidosis, respiratory distress syndrome (RDS) and intraventricular hemorrhage (IVH). One of the factors that affects heat loss in the delivery room is the relationship between surface area, volume and body mass of the newborn. The decrease in body temperature is directly related to gestational age and weight at birth; indeed, this problem is much more present in premature and/or low weight newborns at birth. Even if a full-term newborn has a more developed thermoregulation center than a preterm newborn, this does not mean that this type of newborns is not at risk heat dispersion. To date, the strategies that are implemented for the physiological newborn are documented in the literature are, in addition to the heat chain described by the World Health Organization (WHO), the implementation of skin-to-skin contact (skin to skin) mother-newborn. Some studies demonstrating the beneficial effect of this procedure on maintenance of the newborn's body temperature. The aim of this study is to evaluate two healthcare interventions to prevent heat loss of healthy newborns at birth.

Inclusion Criteria: For mother * Mothers' age over 18 years and good comprehension of Italian language; * Signed informed consent of the mother. For newborn * Informed consent signed by both parents, or in the case of a single-parent family, by mother * Gestational age at birth greater than or equal to 37+0 weeks * Newborns from singleton pregnancies; * Both male and female newborns; * Newborns who will be born from vaginal birth. Exclusion Criteria: For mother * Mothers who do not want to carry out skin-to-skin contact; * Mothers who do not understand/speak the Italian language; * Mothers who need assistance procedures that hinder skin-to-skin contact. For newborn * Newborns whose parents decline participation in the study; * Newborns with major congenital anomalies (heart, brain, metabolic, gastrointestinal); * Newborns born via cesarean section; * Newborns whose parents are under 18 years old, in the case of a single parent the mother who is under 18 years; * Newborns requiring neonatal resuscitation after birth with obstruction of the skin-to-skin contact.