“…The effects of professional burnout [37] and work overload [26,27] are behind this phenomenon. Regarding the quality of care, the main aspects affected are the increase in costs and the decrease in productivity of professionals [4], the increase in hospital stays [4,7,8], demoralized [11] and sick [17,24,25,32] personnel, outdated knowledge [25], lower quality of services provided [16] and worsening of records [26]. Regarding patient safety, an increase of the adverse effects derived from patient care [5][6][7]16], mortality [4][5][6][7], and preventable errors [27] are observed.Therefore, the objective of this review is to identify relationships between overload, nurses' diseases, burnout, quality, and safety during the services.…”