Intensive Care Unit Sedation, Patient Memories, and Post-Intensive Care Psychological Distress

Area of Science:

• Critical care medicine
• Neuroscience
• Psychology

Background:

• Post-intensive care syndrome impacts 1.5 million US patients annually.
• Identifying modifiable risk factors is crucial for reducing syndrome incidence.

Purpose of the Study:

• To determine if delusional memories post-critical illness correlate with psychological distress.
• To investigate the influence of sedation practices on the presence and nature of intensive care unit (ICU) memories.

Main Methods:

• Retrospective analysis of 66 patients from a Critical Illness Survivorship Clinic (Oct 2021-Aug 2023).
• ICU memory descriptions and psychological screening (PTSD, depression, anxiety) were analyzed.
• Logistic regression assessed associations between memory type, psychological distress, and sedation variables.

Main Results:

• No significant difference in PTSD, depression, or anxiety rates between patients with and without delusional memories.
• Lower point estimates for psychological distress were observed in patients with delusional or no memories compared to those with concrete memories.
• Sedation variables (duration, depth, type) showed no association with delusional memories.

Conclusions:

• The study found no association between memory type (delusional vs. concrete) and post-ICU psychological distress.
• No link was identified between memory type and sedation use during the ICU stay.
• Further investigation into patient sedation experiences and their impact on outcomes is warranted.