Araújo, John FonteneleAlvino, Antonia Líria Feitosa Nogueira2022-02-172022-02-172021-11-10ALVINO, Antonia Líria Feitosa Nogueira. Caracterização do ciclo sono e vigília, ritmo repouso e atividade, estados de humor e fadiga de enfermeiros do SAMU. 2021. 140f. Tese (Doutorado em Psicobiologia) - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, 2021.https://repositorio.ufrn.br/handle/123456789/46058The objective of this study was to characterize the Sleep and Wake Cycle (SWC) and the mood and fatigue states and to verify whether these variables differed according to the type and duration of exposure to shift work in nurses from the Mobile Emergency Care Service (SAMU) of the Great Christmas. Forty-seven volunteers participated, working in fixed and alternating shifts, between five and more than 12 years in the activity. SWC was assessed subjectively by MEQ – HO, Epworth Sleepiness Scale, and Pittsburgh Sleep Quality Index (PSQI), and objectively by actigraphy and polysomnography. Mood and fatigue states were assessed using the Beck Depression and Anxiety Questionnaires and Chalder Fatigue Questionnaire, respectively. Most participants were between 31 and 40 years old (53.2%) and had a specialization (74.5%). As a result, in relation to SWC, nurses tended to have an intermediate chronotype (mean 56 ± 9.3), excessive daytime sleepiness (mean 10.4 ± 5.6), poor sleep quality (mean 6.5 ± 2.5), fragmented rhythm [mean Intraday Variability (IV) 0.8 ± 0.2], low synchronization with the light and dark of the day [mean Interday Stability (IS) 0.3 ± 0.1], low sleep efficiency (mean 49.2 ± 23.3) and high number of awakenings (mean 18.8 ± 8.3). Regarding the characterization of sleep, workers on fixed shifts had more prolonged sleep in N3 compared to those on alternating shifts (mean of 60.1 ± 21.7; p = 0.02). On the characterization of mood and fatigue states, it was observed that the participants were severely fatigued (mean 8.8 ± 7.1), with some degree of depression (mean 8 ± 5.1) and anxiety (mean of 6.4 ± 5.2) and had higher fatigue means in alternating shifts (mean 10.5 ± 7.22; p = 0.02). It was concluded that high IV and low IS values are not related to fatigue scores, that sleep measures are not predictors of fatigue, and that there is no relationship between the sleep fragmentation index and fatigue scores. However, (i) there is a relationship between the values of M10 (directly) and L5 (inversely) and the fatigue scores, with only M10 influencing the Chalder fatigue variable (β_1=-0.0004 ; p=0.003); (ii) there is a relationship between sleep duration in N2 and N3 (directly) and fatigue scores; (iii) N2 and N3 influence the Chalder fatigue variable (N2: β=-0.073 ; p=0.022 and N3: β=0.105 ; p=0.0005); (iv) there is a direct relationship between sleepiness values, sleep quality and fatigue scores; (v) only sleep quality has a significant effect on fatigue (β_1=0.139 ; p=0.001) and; (vi) that mood and fatigue states vary depending on the type and time of shift work.Acesso AbertoRitmo circadianoHomeostaseSonoTrabalho por turnosdoctoralThesis