Introduction: Temperature regulation is vital for the survival and stability of the newborn (RN), its care and control by the nursing staff allows control of the environment, transfer and nursing interventions, therefore, the Romeo-November code has been created in the Mexican Navy. General objective: Identify nursing interventions in the Healthy RN during the Romeo - November code, in maintaining thermoregulation and identifying risk factors that favor the appearance of complications. Methodology: Quantitative, descriptive, applied study that focuses on identifying nursing interventions in the Healthy RN during the Romeo - November code at the Naval Medical Center during the months of October and November 2020, nursing staff who are in the joint accommodation and toco-surgery service were selected, the sampling was non-probabilistic, for convenience. Results: 47 RN were analyzed by the nursing staff for maintenance of thermoregulation, 55.3% were male, 44.7% female, 23.4% were born by delivery, 76.6% by cesarean section, by Capurro they had 38 + 2 weeks of gestation, the environmental temperature in the toco-surgery reception was 20 + 1.8ºC, in joint rooming 23 + 2.1ºC, in the toco-surgery reception the RN had 37 + 0.2ºC, during the transfer 36 + 0.7ºC and in joint rooming 36.9 + 0.2ºC. The nursing staff performed pre-heating of the incubator, with monitoring every 30 min and one hour. Conclusions: It is concluded that the nursing staff is trained to care for newborns, in addition to the adjustments made to the pediatric facilities and equipment, to ensure minimal heat loss. In addition, the Romeo - November code of the Naval Medical Center is ideal for caring for newborns.
