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BACKGROUND In cardiac surgery, high-dose opioid contributes to adverse events associated with poor postoperative outcomes. There is growing evidence that nerve block-based multi-modal anesthesia protocols may reduce intraoperative opioid consumption without compromising analgesia management and consequently improve patient's early postoperative recovery.
OBJECTIVE To determine whether opioid-sparing anaesthesia based on ultrasound-guided nerve block could improve early postoperative recovery after cardiac surgery.
DESIGN A randomised controlled trial. SETTING A tertiary hospital. PATIENTS Eighty patients aged 45 to 70 years undergoing cardiac surgery were enrolled. Key exclusion criteria included contraindication to interventions or drugs and a history of chronic pain or chronic opioid use.
INTERVENTIONS Eligible patients were randomised at a 1:1 ratio to receive either opioid-sparing anaesthesia based on ultrasound-guided nerve block (intervention group) or opioid-based anaesthesia (control group).
MAIN OUTCOME MEASURES The primary outcome was the global score of the 15-item Quality of Recovery (QoR-15) questionnaire at 24h after surgery. Secondary outcomes included QoR-15 at 72h after surgery, postoperative pain score, the incidence of postoperative adverse events and chronic pain. Other outcomes included endotracheal intubation duration, length of hospitalization, and hospital costs.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| pecto-intercostal fascial block and rectus sheath block-based opioid-sparing anesthesia | Experimental |
| |
| high-dose opiod traditional anesthesia | No Intervention |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| opioid-sparing protocol | Other | Patients in the OSA group was administrated with 0.5 to 1 mcg·kg-1 sufentanil and received PIFB combined with RSB after anesthetic induction. Patients in the control group were recommended to receive 2 to 3 mcg·kg-1 opioid-based sufentanil. PIFB was conducted at the T2 to T5 levels under ultrasound guidance. Each side received 20 ml 0.3% ropivacaine containing 2.5 mg dexamethasone. Bilateral RSB was conducted after the PIFB and the needle was inserted into the plane between the rectus abdominal muscle and its posterior sheath using an in-plane approach. After verifying needle placement, 15 ml 0.3% ropivacaine containing 2.5 mg dexamethasone was delivered to each side. In the control group, patients received no procedure and were administrated with traditional anesthetic protocol. Patients received continuous intravenous sufentanil (50 to 100 mg) and tropisetron (5 to 10 mg) at 2 ml·h-1 for the first 48 hours after surgery. |
| Measure | Description | Time Frame |
|---|---|---|
| QoR-15 at 24h | the global score of the 15-item Quality of Recovery (QoR-15) questionnaire at 24h after surgery | at 24 hours after surgery |
| Measure | Description | Time Frame |
|---|---|---|
| QoR-15 at 72h | the global score of the 15-item Quality of Recovery (QoR-15) questionnaire at 72h after surgery | QoR-15 at 72 hours after surgery |
| Number rating score (NRS) | Postoperatvie pain was evaluated using a number rating score (NRS) (0 = no pain, 10 = worst pain possible). |
| Measure | Description | Time Frame |
|---|---|---|
| Postoperative mechanical ventilation | The time from the end of operation to the removal of tracheal intubation | The time from the end of operation to the removal of tracheal intubation, assessed up to 30 days |
| hospital length of stay (LOS) |
Inclusion Criteria:
Male or female adult patients aged 45 to 70 years, awaiting elective cardiac surgery, and American Society of Anaesthesiologists physical status classes II or III were eligible.
Exclusion Criteria:
contraindications to punctual or local anesthetic drugs, a history of chronic pain or chronic opioid use, and an inability to communicate or refuse to enroll.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Fuwai hospital | Beijing | China |
Data availuable by sending email to corresponding authors
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|
| NRS at 24 hours and 72 hours after surgery |
| postoperative adverse events | postoperative adverse events included major adverse cardiovascular events (MACCEs), moderate to severe acute kidney injury (AKI), moderate to severe acute liver injury, reintubation, and postoperative nausea and vomiting (PONV). | during hospitalization, an average of 2 weeks, assessed up to 30 days |
| chronic pain | persistent postoperative pain lasting beyond 3 months | at 3 months after surgery |
From the date of admission until the date of discharging
| From the date of admission until the date of discharging, assessed up to 30 days |
| hospital costs | Total cost of patients during hospitalization | during hospitalization, an average of 2 weeks, assessed up to 30 days |