RESUMO
BACKGROUND: Unplanned extubation is a common adverse event and an important indicator of quality and safety of care. It is well recognized that the incidence of unplanned extubation of nasogastric/nasoenteric tubes is higher than that of other devices. Theory and previous research have suggested that cognitive bias in conscious patients with nasogastric/nasoenteric tubes may lead to unplanned extubation, and that social support, anxiety, and hope are influencing factors of cognitive bias. Therefore, the objective of this study was to investigate the effects of social support, anxiety, and hope levels on cognitive bias in patients with nasogastric/nasoenteric tubes. METHODS: In this cross-sectional study, 438 patients with nasogastric/nasoenteric tubes were selected from 16 hospitals in Suzhou from December 2019 to March 2022 by convenience sampling method. The participants were assessed using the General Information Questionnaire, Perceived Social Support Scale, Generalized Anxiety Disorder-7, Herth Hope Index, and Cognitive Bias Questionnaire for patients with nasogastric/nasoenteric tubes. The structural equation model was established with AMOS 22.0 software. RESULTS: The cognitive bias score of patients with nasogastric/nasoenteric tubes was 2.82±0.61. Patients' perceived levels of social support and hope were negatively correlated with their cognitive bias (r=-0.395 and -0.427, respectively, P<0.05), and anxiety was positively correlated with cognitive bias (r=0.446, P<0.05). Structural equation model analysis showed that anxiety had a direct positive effect on cognitive bias, with an effect value of 0.35 (P<0.001), and hope level had a direct negative effect on cognitive bias with an effect value of -0.33 (P<0.001). Social support had a direct negative effect on cognitive bias and was also shown to indirectly affect cognitive bias through anxiety and hope levels. The effect values were -0.22, -0.12, and -0.19 (P<0.001), for social support, anxiety, and hope, respectively. Social support, anxiety, and hope explained 46.2% of the total variation in cognitive bias. CONCLUSIONS: Moderate cognitive bias is noted in patients with nasogastric/nasoenteric tubes, and social support significantly affects cognitive bias. Anxiety and hope level play a mediating role in social support and cognitive bias. Positive psychological intervention and the obtention of positive support could improve the cognitive bias of patients with nasogastric/nasoenteric tubes.
