Decision capacity (DC) is a complex construct, whose assessment poses huge challenges to Liaison Psychiatrist (LP).

Assess factors related to DC in patients with somatic disorders admitted in medical and surgical departments of a general hospital.

Clinical records of patients who were submitted to a DC assessment at Hospital Fernando Fonseca (Portugal), from 1st January 2012 to 31st December 2014 were retrospectively analysed. Collected data were statistically analysed with SPSS®. Univariable analysis was performed, in order to determine factors related to DC.

Data from 35 patients subject to DC evaluation were considered, of whom 42.4% were considered unable to give consent to medical and/or surgical procedures. Most of these assessments were related to patients who refused treatment. Patients unable to decide were predominantly male and mainly affected by organic mental or neurocognitive disorders (P < 0.05). There were no statistical significant differences in the age of those considered able or unable to decide. After PL intervention, 40% of those considered unable to decide changed their decision. However, it was not significantly related to the ability to give consent.

Neurocognitive disorders are common diagnosis found in patients admitted in somatic departments with no DC. Frequent change in decision after LP intervention may reflect not only cognitive fluctuations, but also a possible influence of LP intervention on patients’ choices. Appropriate standardized measures are useful tools in assessing patients with cognitive impairment, reducing evaluation differences between professionals, and in order to increase LP decisions credibility.

The authors have not supplied their declaration of competing interest.