Adverse events in Neonatal Intensive Care Units related to the safety of the neonatal patient constitute a topic of increasing attention in the care practice environments as well as in the field of scientific publications. Newborns, especially premature infants with their greatest vulnerability, are usually exposed to diverse and complex treatments, demanding a correct organization of services in order to limit the probability of occurrence of adverse events. This work proposes an integrative bibliographic review focused on scientific articles of journals indexed in databases Pub-Med, Virtual Health Library, SciELO, and Scopus, which analyze adverse events that occurred in areas of Neonatal Intensive Care Units in Argentina and the organizational characteristics related to its occurrence, during the period 2000-2018. In the analyzed corpus there is a similar number of articles according to triggers tools, incidents, specific Adverse Events, and nonspecific Adverse Events. Among the EA triggers tools, the most frequent are those related to intra-hospital infections due to mishandling of catheters, problems in mechanical ventilation, loss of the vascular catheter, retinopathy of prematurity, bleeding, transfusions related to nursing care or general medical problems. Specific adverse events are focused on high-risk preterm infants such as retinopathy of prematurity, bronchopulmonary dysplasia, and hospital-acquired infections. Articles dealing with nonspecific adverse events are general ones that include other characteristics such as new technologies, risk factors related to neonatal mortality, diagnosis of the patient's safety situation, and organizational characteristics. Most of the articles that study AE-related incidents are linked to the use of medications, and bradycardia and hypoxia associated with death or future disability in premature infants under 1500 grams. Some research describes different units of AE measurement associated with trigger tools and other AE with disparate results and therefore difficult to compare with values of 1.8 AE per hospitalization or frequency of 26% AE, according to different authors. In most of the articles analyzed, health organizations are included as a factor linked to the occurrence of Adverse Events without giving them the corresponding relevance.