Tricyclic antidepressants and delirium

Area of Science:

• Pharmacology
• Geriatric Medicine
• Neuroscience

Background:

• Tricyclic antidepressants (TCAs) are commonly prescribed.
• Delirium is a serious neuropsychiatric condition.
• The relationship between TCA levels and delirium is not fully understood.

Purpose of the Study:

• To investigate the association between plasma tricyclic antidepressant (TCA) levels and the development of delirium.
• To identify risk factors for TCA-induced delirium in inpatients.

Main Methods:

• Retrospective chart review of 125 inpatients with assayed TCA plasma levels.
• Documentation of delirium cases.
• Statistical analysis to determine relationships between variables.

Main Results:

• Delirium was observed in 10 out of 125 patients.
• A statistically significant relationship was found between delirium and higher log-transformed plasma TCA levels.
• Age and race were also identified as statistically significant factors.

Conclusions:

• Plasma TCA levels, patient age, and race are associated with delirium development.
• Monitoring TCA levels may be important for preventing delirium in at-risk patients.