OBJECTIVE: To analyse the perception of psychosocial factors and mental workload of nurses
who work in intensive care units. It is hypothesised that nurses in these units
could perceive psychosocial risks, manifesting in a high mental work load. The
psychosocial dimension related to the position's cognitive demands is hypothesised
to mostly explain mental work load. METHOD: Quantitative study, with a descriptive, cross-sectional, and comparative design.
A total of 91% of the intensive care unit populations of three Chilean hospitals
was surveyed, corresponding to 111 nurses. The instruments utilised included (A) a
biosociodemographic history questionnaire; (b) the SUSESO-ISTAS 21 questionnaire;
and (c) the Mental Work Load Subjective Scale (ESCAM, in Spanish). RESULTS: In total, 64% and 57% of participants perceived high levels of exposure to the
psychosocial risks Psychosocial demands and Double shift, respectively. In
addition, a medium-high level of overall mental load was observed. Positive and
significant correlations between some of the SUSESO-ISTAS 21 and ESCAM dimensions
were obtained. Using a regression analysis, it was determined that three
dimensions of the psychosocial risk questionnaire helped to explain 38% of the
overall mental load. CONCLUSION: Intensive care unit nurses felt that inadequate psychosocial factors and mental
work overload existed in several of the tested dimensions.