Post-operative caesarean section pain and analgesia following neuraxial anaesthesia

ABSTRACT

Introduction: Pain following caesarean section (CS) may hinder recovery and ability to care for the newborn. NICE [1] and PROSPECT [2] suggest analgesia be individualised. Regular paracetamol and NSAID should be co-prescribed. NICE advise adding regular dihydrocodeine where required. PROSPECT advise opioids for breakthrough where other techniques (e.g. regional) are contraindicated. Our protocol is PR diclofenac 100 mg in theatre, regular oral paracetamol 1 g + ibuprofen 400 mg, breakthrough dihydrocodeine 30 mg and oramorph 5 mg. The NHSL pain scale is a 0–4 numeric patientreported score, with >2 and <3 representing high and low scores. A CS audit in 2019–20 demonstrated 95% of patients being satisfied/very satisfied with pain relief, but 42% and 31% reported high pain scores on movement and rest, respectively. Only 28% received PR diclofenac, 85% paracetamol + ibuprofen, and 86% breakthrough dihydrocodeine. This re-audit assessed dynamic pain scores following introduction of regular dihydrocodeine 30 mg. Methods: After hospital clinical audit team approval, a prospective reaudit of postoperative CS pain and analgesia following neuraxial anaesthesiawas performed using a standardised patient questionnaire conducted on postoperative day 1 or 2 in Sep–Oct 2021. Participation was voluntary, occurring contemporaneously with routine postneuraxial anaesthesia follow-up. The NHSL pain scale was used. Elective and emergency patients were included. Cases under general anaesthetic were excluded. Results: The main outcomes are reported in the Table. (Table Presented) Discussion: Following introduction of regular dihydrocodeine, pain scores on movement did not improve. Use of breakthrough analgesia reduced. Time taken to receive breakthrough analgesia increased. The COVID-19 pandemic impacted staff absence rates. Telephone reviews post-discharge were not evaluated for the re-audit, which may skew results, with confounding factors contributing to pain. Future work will include midwife education, review opioid protocol prescribing and introduction of routine regional anaesthetic techniques (e.g. TAP block), followed by re-audit.