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Introduction: Sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection. Mounting evidence suggests that many cognitively impaired sepsis survivors show long-term neurocognitive deficits in neuropsychological tasks. To date, the underlying mechanisms of these deficits are insufficiently understood. Based on previous evaluations we hypothesized that visual attention and working memory may be affected in a sample of cognitively impaired sepsis survivors. Methods: We utilized psychophysical whole-and partial-report paradigms based on the computational theory of visual attention (TVA) to determine (i) whether sepsis survivors show changes in basic parameters of visual attention and working memory, (ii) whether the affected parameters are related to neuropsychological test results in a standard battery in sepsis survivors and matched healthy control participants, (iii) whether between-group differences in these basic parameters of visual attention could account for underperformance of sepsis survivors in neuropsychological tests when adjusting for potentially relevant clinical variables. Results: We showed that, in sepsis survivors, the maximum number of elements consciously maintained in an instant, i.e. the working memory storage capacity K, is reduced (sepsis survivors: M = 3.0; healthy controls: M = 3.4). Moreover, K explained variance in neurocognitive outcomes -17% in attentional and 16 % in executive functions - in a standard neuropsychological battery. The association remained stable when adjusting for clinical variables. Discussion: Thus, in our sample of cognitively impaired sepsis survivors, a reduction in working memory capacity seems to be a critical determinant of the neurocognitive sequelae. It should be the subject of future work on mechanisms but may also serve as surrogate outcome measure in interventional studies.
RESUMO
OBJECTIVE: To provide a systematic review on the effects of question prompt lists (QPL) in oncological settings. METHODS: A systematic literature search was conducted in Medline, PsycINFO and the Cochrane Collaboration. Randomized controlled studies (RCTs) that evaluated QPL-only interventions were included. Risk of bias of included studies was evaluated using the Cochrane RoB 2 tool. Data concerning effects on communicative processes in patient-physician relationship and psychological outcomes were analyzed. RESULTS: 10 RCTs met the inclusion criteria. Results suggest that QPLs lead to a shift of topics discussed. There were weak indications that QPL interventions increase anxiety shortly before and after consultations, but may decline anxiety during follow-up. Patients consistently perceive QPLs as more helpful than usual information sheets. QPL-only interventions show limited impact on communicative processes and psychological outcomes. They help not to forget or discuss important questions. CONCLUSION: With a better integration in patient-physician communication QPLs may become a useful tool for patients and physicians. Future research is needed to investigate if there is greater benefit from QPL interventions in specific settings. PRACTICE IMPLICATIONS: QPLs are an inexpensive tool to influence communicative processes positively in oncological consultations.
