[Concentration and memory impairment in the later postoperative phase].

Area of Science:

• Anesthesiology and Perioperative Medicine
• Neuroscience
• Psychology

Context:

• Postoperative cognitive dysfunction (POCD) is a significant concern following surgical procedures.
• While acute effects of anesthesia on psychic functions typically resolve quickly, some patients report lasting cognitive impairments.
• Prevalence and contributing factors of prolonged memory and concentration deficits require further investigation.

Purpose:

• To investigate the incidence and characteristics of prolonged cognitive disturbances in patients after surgery.
• To compare subjective patient experiences with objective psychometric test results.
• To explore potential etiological factors, including psychogenic influences, on postoperative cognitive deficits.

Summary:

• A preliminary study of 520 surgical patients found 30% reported prolonged memory disturbances, compared to 6% in a local anesthesia control group.
• Objective psychometric testing (digit span, LGT1, d2) in 90 surgical patients did not reveal reduced memory capacity.
• Subjective reports of memory and concentration impairment persisted despite objective test results, suggesting complex underlying causes.

Impact:

• Highlights a discrepancy between subjective patient-reported cognitive issues and objective psychometric findings post-surgery.
• Suggests that psychogenic factors may play a crucial role in the etiology of persistent postoperative cognitive dysfunction.
• Underscores the need for further research into the mechanisms and management of prolonged cognitive deficits following anesthesia and surgery.