Don’t assume that psychiatric patients lack capacity to make decisions about care
Voluntary participation in research. Many patients with schizophrenia volunteer to participate in clinical trials even when they are acutely psychotic and admitted to a psychiatric hospital. Given the importance placed on participants’ voluntary informed consent as a prerequisite for ethical conduct of research, the cognitive and emotional impairments associated with schizophrenia raise questions about patients’ capacity to consent.
As is true in other areas of functional capacity, the ability of patients with schizophrenia to make competent decisions relates more to their overall cognitive functioning than to the presence or absence of specific symptoms of the disorder.7 Documentation of longitudinal consent-related abilities among research participants with schizophrenia in the long-term Clinical Antipsychotic Trials of Intervention Effectiveness study indicated that most participants had stable or improved consent-related abilities. Although almost 25% of participants experienced substantial worsening, only 4% fell below the study’s capacity threshold for enrollment.8
What I learned from Ms. V
A diagnosis of schizophrenia does not automatically render a person unable to make decisions about medical care. Even patients who have severe mental illness might have significant intact areas of reality testing. Ethically, it is important to at least consider that the chronically mentally ill can understand treatment options and express consistent choices.
Healthcare providers might tend to exclude psychiatric patients from end-of-life decisions because they (1) are worried about the emotional fragility of such patients and (2) assume that patients lack capacity to participate in making such important decisions. The case presented here is an example of a patient with a severe psychiatric diagnosis being able to participate in her care despite her mental state.
