Best practice & research. Clinical anaesthesiology
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Best Pract Res Clin Anaesthesiol · Jun 2002
ReviewSpinal anaesthesia: local anaesthetics and adjuncts in the ambulatory setting.
Intrathecal lidocaine remains a popular choice for ambulatory spinal anaesthesia due to its reliability, rapid onset and predictable rapid recovery profile. However, concerns with transient neurological symptoms (TNS) and their significant association with lidocaine have generated interest in alternative local anaesthetic agents to provide adequate spinal anaesthesia with the briefest possible recovery period. ⋯ Controversies regarding the possible lower risk of TNS with newer spinal anaesthetic techniques and new discharge criteria are reviewed. The final section provides technical pearls to optimize ambulatory spinal anaesthetic outcomes.
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Best Pract Res Clin Anaesthesiol · Jun 2002
ReviewMaking an ambulatory surgery centre suitable for regional anaesthesia.
This chapter reviews a management strategy for transforming an outpatient surgery centre from that which exclusively uses general anaesthesia to one using regional anaesthesia with peripheral nerve blocks. Barriers presented by patients, nursing staff, surgeons and administrators can be notable; these might undermine the well-intended efforts of highly-skilled regionalists. ⋯ The centerpiece of the anaesthesia care process remains pre-emptive multimodal analgesia, routine multimodal antiemetic prophylaxis and avoidance of general anaesthesia (GA) with volatile agents. The remainder of the care process relies on teamwork among all healthcare providers and meaningful administrative support.
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The considerable development of ambulatory surgery has led to an increase in the number of lower extremity procedures performed in an outpatient setting. More recently, the availability of disposable pumps has allowed us to extend the indications of continuous nerve blocks for ambulatory post-operative pain management. Indications for lumbar plexus continuous blocks include anterior cruciate ligament (ACL) reconstruction and patella repairs as well as frozen knee, whereas continuous sciatic blocks are indicated for major foot and ankle surgery. ⋯ This latter technique seems to be the preferred mode because it offers the advantage of tailoring the amount of local anaesthetics, mostly 0.2% ropivacaine, to the individual need and also maximizes the duration of infusion for a given volume of local anaesthetic. Although the preliminary reports indicate that lower extremity continuous blocks provide effective post-operative ambulatory analgesia and are safe, especially as a part of a multimodal approach, appropriate training in these techniques represents one of the most important limiting factors of the placement of perineural catheters. Additional research is required to determine the optimal conditions in which these techniques are indicated.
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Early and efficient rehabilitation is necessary for improving outcome after shoulder surgery. Pain, which is severe to very severe in this condition, is the major factor which compromises early physical therapy. Interscalene block is a well recognized and efficient technique for controlling pain after major open shoulder surgery. ⋯ However, the application of a continuous infusion of local anaesthetics through an interscalene catheter is actually the best technique available to achieve pain relief at rest and on movement after this type of surgery. This chapter emphasizes the advantages of the modified lateral approach, the use of patient-controlled interscalene analgesia and the traps and tricks of the interscalene block. Thus, this chapter demonstrates why interscalene anaesthesia and analgesia are the most appropriate techniques for shoulder surgery.
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Surgical procedures of the knee are increasingly common in outpatient centres. Advances in arthroscopy and other technologies allow more complex knee procedures to be performed on an outpatient basis. ⋯ Specific nerve blocks and local anaesthetics suitable for various knee procedures are discussed. The use of perineural catheters in the outpatient management of major knee surgery patients is also considered.