Local Anesthesia
Efficacy of anterior approach to quadratus lumborum block in each abdominal and back region
Lu Yang, Wang Quanguang, Shi Kejian, Jin Zhousheng, Zhou Riyong, Zheng Haiyan, Xu Xuzhong
Published 2017-06-20
Cite as Chin J Anesthesiol, 2017,37(06): 697-699. DOI: 10.3760/cma.j.issn.0254-1416.2017.06.015
Abstract
ObjectiveTo evaluate the efficacy of the anterior approach to quadratus lumborum block in each abdominal and back region.
MethodsTwelve healthy volunteers of both sexes, aged 18-45 yr, of American Society of Anesthesiologists physical status Ⅰ or Ⅱ, with body mass index of 18-30 kg/m2, were enrolled in the study.Quadratus lumborum block was performed via the anterior approach under the guidance of ultrasound with 0.375% ropivacaine 20 ml.The block was assessed by cold stimulation (ice cake) in each abdominal and back region (the right side of the body was divided into 15 regions using the anatomical " landmarks" on the body surface). The positive condition in each region was recorded at 30 min after administration.
ResultsThe region in which the positive rate ≤5% was 0.The regions in which the positive rate >5%-20% were 1 and 13 regions.The regions in which the positive rate >20%-50% were 2, 3 and 4 regions.The regions in which the positive rate >50%-70% were 6, 7 and 10 regions.The regions in which the positive rate >70%-<95% were 5, 14 and 15 regions.The regions in which the positive rate ≥95% were 8, 9, 11 and 12 regions.
ConclusionThe anterior approach to quadratus lumborum block is effective in the middle-lower region of the anterior abdominal wall on the blocked side.
Key words:
Psoas muscles; Nerve block; Abdomen; Back
Contributor Information
Lu Yang
Department of Anesthesiology, Yueqing Hospital Affiliated to Wenzhou Medical University, Wenzhou 325600, China
Wang Quanguang
Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
Shi Kejian
Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
Jin Zhousheng
Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
Zhou Riyong
Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
Zheng Haiyan
Department of Anesthesiology, Yueqing Hospital Affiliated to Wenzhou Medical University, Wenzhou 325600, China
Xu Xuzhong
Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
