NCT06497855

Impact of Estimated Concentration of Propofol on Implicit Memory Formation

Impact of Target Controlled Infusion Estimated Concentration of Propofol on Implicit Memory Formation During Propofol-Remifentanil General Anaesthesia

• Status: Not Yet Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 80 (estimated)
• Sponsor: University of Padova · Academic / Other
• Sex: Female
• Age: 18 Years – 90 Years
• Healthy volunteers: —

Summary

Implicit memory formation and learning during general anaesthesia is a still debated question and no anesthetic regimen (ie intravenous anaesthesia vs inhalatory one) nor analgesic regimen (i.e. low or high opioids usage) has been identified for prevention. With this study the investigators aim to investigate if, during Total Intravenous Anaesthesia with Target Controlled Infusion (TIVA-TCI) different concentrations of Propofol at loss of responsiveness, maintenance and return of responsiveness can have a role in implicit memory formation.

Detailed description

Implicit memory formation and learning during general anaesthesia is a still debated question and no anesthetic regimen (ie intravenous anaesthesia vs inhalatory one) nor analgesic regimen (i.e. low or high opioids usage) has been identified for prevention. With this study the investigators aim to investigate if, during Total Intravenous Anaesthesia with Target Controlled Infusion (TIVA-TCI) different concentrations of Propofol at loss of responsiveness (CeP RoR), maintenance (CePMA) and return of responSiveness (CeP RoR) can have a role in implicit memory formation. 20 most common italiaN words will be continuously presented to the anaesthetized patients from Loss of responsiveness to end of surgery. CeP RoR, MA and LoR, as well as patient state index (PSi) from Sedline monitor for hypnosis level monitoring will be recorded. Within 24 hours, a trained psychologist will be present the patients the Word Steam Recognition Test, Free Recall and Force Choice recognition task to asses the presence of implicit memory formation. A second group, who did not hear the words, will be investigated to assess the role of chance in the above-mentioned test.

Conditions

• General Anaesthesia
• Implicit Memory

Timeline

• Start date: 2024-07-01
• Primary completion: 2024-10-31
• Completion: 2024-11-15
• First posted: 2024-07-12
• Last updated: 2024-07-12