Patients undergoing elective exploratory laparotomy for gynecological cancer were screened and enrolled between August 23, 2021 and February 10, 2022. Inclusion criteria were patients aged 20–60 years; American Society of Anesthesiologists physical status I or II; cognitive capacity to use the patient-controlled analgesia (PCA). The exclusion criteria were as follows: bronchial asthma; coronary heart disease; severe hypertension; diabetes mellitus; obesity (BMI >30 kg/m2); cardiac, hepatic, and renal dysfunction; psychiatric disease; history of chronic pain; history of alcohol or opioid abuse; chronic use of opioids; intake of any analgesic within 48 h before surgery; pregnancy; allergy and contraindication to any drug used in the study; local infection at the TAP block site; contraindication for the use of PCA; or incapacity to comprehend pain assessment. After randomization and allocation, patients were withdrawn if re-detection for postoperative bleeding or if protocol was violation.
Free full text: Click here