Regional anaesthesia of the trunk
Analgesia of the thorax and abdomen can be challenging. Surgical incisions are commonly associated with severe postoperative pain. Whilst continuous epidural analgesia remains the ‘gold standard’ in terms of postoperative pain relief after major surgery, there remain concerns regarding rare serious side effects. It has been difficult to demonstrate conclusive evidence of improvement in outcomes when epidural analgesia is used. Superior pain relief and a reduction in postoperative respiratory morbidity are, however, clear advantages of regional anaesthesia. Interest has increased in techniques such as paravertebral and rectus sheath blocks in part due to the ready availability of high-definition portable ultrasound equipment, but also in response to concerns regarding neuraxial blockade and the development of enhanced recovery pathways. In addition, novel approaches to analgesia of the trunk, such as the transversus abdominis plane block, have been developed and are now widely used as part of a multimodal analgesic regimen. In this chapter, techniques of neuraxial and peripheral nerve block are discussed along with their indications and complications.