Effect of Transversus Abdominis Plane Block With Compound Lidocaine and Esketamine on Pain After Surgery
Postoperative Pain
About this trial
This is an interventional prevention trial for Postoperative Pain focused on measuring Compound lidocaine, Ropivacaine, Transversus abdominis plane block, opioid consumption
Eligibility Criteria
Inclusion Criteria:
- Subject is scheduled to undergo colorectal cancer surgery under general anesthesia
- Subject's American Society of Anesthesiologists physical status is I-II.
- The subject's parent/legally authorized guardian has given written informed consent to participate.
Exclusion Criteria:
- Subject has a diagnosis of bronchial asthma, coronary heart disease, severe hypertension, renal failure or liver failure.
- Subject has a diagnosis of Insulin dependent diabetes.
- Subject is allergy and contraindication to local anesthetics or any components of local anesthetics.
- Subject has a history of chronic pain, a history of alcohol or opioid abuse, pre- existing therapy with opioids, intake of any analgesic drug within 48 hours before surgery.
- Subject has any contraindication for the use of patient-controlled analgesia (PCA).
- Subject is pregnant or breast-feeding.
- Subject is obese (body mass index >30kg/m^2).
- Subject is incapacity to comprehend pain assessment and cognitive assessment.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Placebo Comparator
Active Comparator
Active Comparator
Active Comparator
Normal saline in transversus abdominis plane block
Ropivacaine in transversus abdominis plane block
Compound lidocaine in transversus abdominis plane block
Compound lidocaine and esketamine in transversus abdominis plane block
Before the induction of anesthesia, normal saline is used for bilateral transversus abdominis plane block in a volume of 20 mL of each side.
Before the induction of anesthesia, 0.375% ropivacaine is used for bilateral transversus abdominis plane block in a volume of 20 mL of each side.
Before the induction of anesthesia, 0.4% compound lidocaine is used for bilateral transversus abdominis plane block in a volume of 20 mL of each side.
Before the induction of anesthesia, 0.4% compound lidocaine and 0.4mg/kg esketamine are used for bilateral transversus abdominis plane block in a volume of 20 mL of each side.