About this trial
This study aims to assess whether electroencephalogram (EEG) and nociception level-guided anesthesia can improve quality of recovery after laparoscopic gynecological surgery compared with standard care. Patients will be randomly assigned to either EEG and Analgesia Nociception Index (ANI)-guided anesthesia group (EEG-and-ANI-Guided group) or usual care group (control group). Primary outcome is 15-item Quality of Recovery (QoR-15) score at postoperative day (POD) 1. Secondary outcomes included remifentanil consumption during anesthesia, occurrence of awareness with recall, incidence of undesirable intraoperative movement, emergence time, postoperative pain scores, quality of recovery score at POD 2, and length of hospital stay.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Total laparoscopic hysterectomy with/without salpingo-oophorectomy
Laparoscopic myomectomy
Laparoscope-guided salpingo-oophorectomy
Laparoscope-guided ovarian cystectomy
Disqualifiers
Patients with nonregular sinus cardiac rhythm
Patients with implanted pacemakers
Patients on antimuscarinic agents, α2-adrenergic agonists, β1-adrenergic antagonists, antiarrhythmic agents
pregnant or breastfeeding women
Trial design
Parallel
Treatments tested in this trial
EEG-and-ANI-guided anesthesia
Procedure/SurgeryDuring anesthetic maintenance, sevoflurane concentration will be titrated according to EEG monitoring. Sevoflurane concentration will be titrated to maintain intraoperative Patient state index (PSi) ≥ 35 and to avoid burst suppression. Intraoperative target-controlled infusion of remifentanil will be titrated to maintain intraoperative ANI between 50 and 70.
standard anesthesia
Procedure/SurgeryDuring anesthetic maintenance, the attending anesthesiologists will provide a routine standard care for anesthetic and analgesic titration. In brief, hemodynamic variables and clinical situations will be used to titrate the sevoflurane concentration and remifentanil infusion rates.
Sevoflurane and remifentanil
DrugFor anesthetic maintenance, balanced anesthesia with sevoflurane inhalation and target controlled infusion of remifentanil will be performed.
EEG and ANI
DeviceEEG monitoring using SEDline (Masimo, Irvine, California, USA) and Analgesia Nociception Index (ANI; MetroDoloris Medical Systems, Lille, France) monitoring will be performed.
Treatment groups
Trial outcomes
Primary outcomes
15-item Quality of Recovery (QoR-15) at postoperative day (POD) #1
The Korean version of 15-item Quality of Recovery (QoR-15) score. Each item uses an 11-point numeric rating scale. The sum of the scores of the 15 items ranges from 0 to 150, with a high score indicating good quality of recovery.
Secondary outcomes
Remifentanil consumption during anesthesia
Total remifentanil consumption during anesthesia
Occurrence of awareness with recall
Occurrence of awareness with recall during surgery, which will be asked at postoperative day #1.
Incidence of undesirable intraoperative movement
Incidence of undesirable intraoperative movement during surgery
Intraoperative end-tidal sevoflurane minimum alveolar concentration (MAC)
Intraoperative end-tidal sevoflurane minimum alveolar concentration (MAC)
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