The present study aims to assess the difference in postoperative opioid consumption between patients who intraoperatively receive a pecto-intercostal facial block combined with opioid-free anesthesia versus a traditional opioid-based regimen for cardiac surgery. The literature on opioid-free anesthesia for cardiac surgery is minimal and solely consists of case reports and retrospective studies. Nevertheless, these reports show the feasibility of opioid-free anesthesia. The purpose of this study is to assess the opioid-sparing effect and efficacy of combining an opioid-free anesthetic regimen with a pecto-intercostal fascial plane block (PIFB) in patients undergoing cardiac surgery. We hypothesize that opioid-free cardiac anesthesia with an intraoperative PIFB significantly reduces postoperative opioid consumption in comparison to a high-dose opioid intraoperative regimen.
Patients, aged 18 years or older, scheduled for coronary artery bypass graft surgery (CABG) with a complete midline sternotomy as surgical approach will be recruited for this study. Patients planned for this particular surgical procedure will be recruited and allocated to one of 2 groups: 1. "Intervention" group: Opioid-free anesthetic regimen with a pre-incisional pecto-intercostal fascial plane block (PIFB); 2. "Control" group: traditional opiate-based anesthetic regimen in which the dosage of the opioids is at the discretion of the attending anesthesiologist. Based on our power analysis, each group will consist of 64 patients.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
64
Patients will be administered a combination of a pre-incisional pecto-intercostal fascial plane block and a standardized opioid free anesthetic regimen consisting of dexmedetomidine, esketamine and lidocaine.
Patients will be administered a traditional anesthetic regimen which is based on sufentanil dosage. The dosage is at the discretion of the attending anesthesiologist.
Postoperative morphine consumption
The total amount of morphine used postoperatively in the intensive care unit until discharge.
Time frame: Day 2
Time until extubation
The time between ICU-arrival and extubation
Time frame: Day 0
Mean visual analogue score (VAS) pain score at rest
The mean VAS pain score at rest at 24 hours and 48 hours after extubation.
Time frame: Day 2
Mean visual analogue score (VAS) pain score whilst coughing
The mean VAS pain score whilst coughing at 24 hours and 48 hours after extubation.
Time frame: Day 2
Incidence of postoperative nausea and vomiting
Incidence of postoperative nausea and vomiting (PONV)
Time frame: Day 2
Incidence of postoperative delirium
Incidence of postoperative delirium using the Confusion Assessment Method for ICU
Time frame: Day 2
Mean length of ICU stay
The mean length of ICU stay, reported in hours.
Time frame: Day 2
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