Patients
inflammation, allergy, ESPB
INFLAMMATION, ALLERGY, LOCAL ANESTHETIC SYSTEMIC TOXICITY, CHRONIC PAIN SYNDROME
Sixty participants were enrolled between the 19Other inclusion criteria were ASA status I–III and informed written consent for participation in the study. Exclusion criteria were chronic pain syndrome, chronic opioid use, weight less than 50 kg due to risk of local anesthetic systemic toxicity (LAST), body mass index (BMI) > 35, pregnancy or breastfeeding, allergy to local anesthetics, inflammation at the catheter insertion site or inability to use the patient-controlled analgesia (PCA) pump. Patients were randomly assigned to either the intervention ESPB arm or the comparative ICNB arm. The study protocol could not be blinded because of the indiscrete intervention type.