Can ropivacaine and levobupivacaine be used as test doses during regional anesthesia?
Can ropivacaine and levobupivacaine be used as test doses during regional anesthesia?
复制标题
区域麻醉期间可以使用罗哌卡因和左布比卡因作为测试剂量吗？
DOI：
10.1097/00000542-200404000-00023
复制
发表时间：
2004
期刊：
影响因子：
8.8
通讯作者：
Hood,DavidD
中科院分区：
文献类型：
--
作者：
Owen,MedgeD;Gautier,Philippe;Hood,DavidD
BackgroundLower systemic toxicity reported with ropivacaine and levobupivacaine may produce less reliable recognition of inadvertent intravenous injection during regional anesthesia. This study was undertaken to determine whether ropivacaine and levobupivacaine are suitable for use as intravenous test doses by evaluating central nervous system (CNS) symptoms after intravenous bolus injection.MethodsInstitutional approval and informed consent were granted for the study. One hundred twenty patients scheduled to undergo elective surgery were randomly assigned to receive 5 ml intravenous saline, 100 mg lidocaine, 25 mg ropivacaine, or 25 mg levobupivacaine before anesthesia. Patients reported CNS symptoms after injection and were monitored for hemodynamic change.ResultsIntravenous ropivacaine or levobupivacaine produced CNS symptoms in only 52% and 57% of patients, respectively, compared with 87% of patients after lidocaine (P< 0.02). Despite preparatory instruction, many patients receiving ropivacaine or levobupivacaine did not spontaneously volunteer symptoms because they were subtle and admitted symptoms only after in-depth questioning by the investigator.ConclusionsPlain ropivacaine and levobupivacaine (25 mg) solutions are unsuitable for use as intravenous test doses during regional anesthesia because CNS symptoms are insufficient. When using ropivacaine or levobupivacaine for regional anesthesia, for test dose purposes, the authors recommend the addition of epinephrine to the local anesthetic solution or the use of a separate agent with more predictable CNS characteristics.
