The intense working hours of the teams on the front line of COVID-19 resulted in negative results in the quality of sleep and in the mental health of professionals. This integrative review aims to identify evidence about the sleep quality of health professionals during the COVID-19 pandemic and its relationship with mental health. Data collection took place on the VHL and PUBMED portals, in October 2022. Thirteen articles were included, published between 2020 and 2022, all in English. As for the country in which the study was carried out, the following stand out: China (23%), United States of America (23%), Turkey (23%), Saudi Arabia (15.4%), Lebanon (7.7%) and Iran (7.7%). Poor sleep quality was evidenced, as well as impacts and correlation with mental suffering. It is understood that the measures that go in the direction of improving the working conditions of health professionals, provided a better quality of sleep and associated problems.

Intensive Care Units are units that provide intensive care to patients who need continuous observation, critically ill or hemodynamically unstable. Workers' mental health has been the target of stressors in this pandemic due to psychological overload, fatigue, exposure to large-scale deaths and significant losses, frustrations related to the quality of care, threats, aggression and increased risk of infection. Generalized Anxiety Disorder is characterized by excessive anxiety and worry about a variety of activities or events. In parallel, Depressive Disorder is characterized by severe or persistent sadness to the point of interfering with functioning and, often, decreasing interest or pleasure in the bearer's daily activities. This study is an integrative literature review (RIL) that is based on scientific findings with the objective of identifying and understanding problems, situations and vulnerabilities related to the population. The studies were published in the years 2020, 2021 and 2022, being the equivalent of 22.22% in the year 2020, 55.55% in the year 2021 and about 22.22% in the year 2022. Were respectively from Norway, Turkey, Brazil, Spain, United States of America, France, China and Italy, with France being the country with the highest prevalence in the study, presenting about 22.22% of the total percentage and the other countries containing only 11, 11%. Therefore, the contents of the research found referred to the factors associated with anxiety and depression in professionals in intensive care units: an integrative review.