title: Adding dexmedetomidine to ropivacaine for lumbar plexus and sciatic nerve block for amputation of lower limb in high-risk patient-a case report.
abstract: The ischemia necrosis of limb frequently requires surgery of amputation. Lumbar plexus and sciatic nerve block is an ideal intra-operative anesthetic and post-operative antalgic technique for patients of amputation, especially for high-risk patients who have severe cardio-cerebrovascular diseases. However, the duration of analgesia of peripheral nerve block is hardly sufficient to avoid the postoperative pain and the usage of opioids. In this case, a 79-year-old man, with multiple cerebral infarcts, congestive heart failure, atrial flutter and syncope, was treated with an above knee amputation because of ischemia necrosis of his left lower limb. Dexmedetomidine 1 μg/kg was added to 0.33% ropivacaine for lumbar plexus and sciatic nerve block in this case for intra-operative anesthesia and post-operative analgesia. The sensory function was blocked fully for surgery and the duration of analgesia maintained 26 hours with haemodynamic stability and moderate sedation. The patient did not complain pain and require any supplementary analgesics after surgery. This case showed that adding 1 μg/kg dexmedetomidine to ropivacaine for lumbar plexus and sciatic nerve block may be a feasible and safe technique for high-risk patients for lower limb surgery of amputation.
authors.affiliation: Department of Anesthesiology, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Chun-Guang
authors.initials: CG
authors.lastname: Wang
authors.affiliation: Department of Anesthesiology, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Yan-Ling
authors.initials: YL
authors.lastname: Ding
authors.affiliation: Department of Anesthesiology, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Ai-Ping
authors.initials: AP
authors.lastname: Han
authors.affiliation: Department of Orthopedics, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Chang-Qing
authors.initials: CQ
authors.lastname: Hu
authors.affiliation: Department of Anesthesiology, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Shi
authors.initials: S
authors.lastname: Hao
authors.affiliation: Department of Anesthesiology, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Fang-Fang
authors.initials: FF
authors.lastname: Zhang
authors.affiliation: Department of Orthopedics, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Yong-Wang
authors.initials: YW
authors.lastname: Li
authors.affiliation: Department of Orthopedics, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Hu
authors.initials: H
authors.lastname: Liu
authors.affiliation: Department of Orthopedics, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Han
authors.affiliation: Department of Orthopedics, The First Center Hospital Of Bao Ding Baoding, 071000, Hebei, China.
authors.forename: De-Li
authors.initials: DL
authors.lastname: Guo
authors.affiliation: The First Center Hospital Of Bao Ding Baoding 071000, Hebei, China.
authors.forename: Zhi-Qiang
authors.initials: ZQ
authors.lastname: Zhang
keywords: Dexmedetomidine; high-risk patient; lumbar plexus block; ropivacaine; sciatic nerve block