Anatomical study for effects of ultrasound-guided nerve block

2014 Fiscal Year Final Research Report

• Project/Area Number: 24592350
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Anesthesiology/Resuscitation studies
• Research Institution: Tohoku University (2013-2014); Sapporo Medical University (2012)
• Principal Investigator: YAMAUCHI Masanori 東北大学, 医学(系)研究科(研究院), 教授 (00404723)
• Co-Investigator(Kenkyū-buntansha): NARIMATSU Eichi 札幌医科大学, 医学部, 教授 (70295343)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 神経ブロック / 遺体 / ソナゾイド / 超音波画像 / 麻酔

Outline of Final Research Achievements

In the three series studies, spread of solution by ultrasound-guided (US) nerve block were investigated using Thiel embedded cadavers.
(1) Segmental nerve involvement by US transversus abdominis plane block (TAP-B): Each subcostal and midaxillary TAP-B could sufficiently spread T8-9 and T10-T12 intercostal nerve branches by 15 ml, respectively. (2) Spread of solution through femoral nerve block catheter: Fluoroscopy, computed tomography and anatomical study showed that lateral femoral cutaneous nerve and femoral nerve block by sole injection, could be achieved when a femoral nerve catheter advanced around the iliopsoas muscle or major psoas muscle. (3) Contrast-enhanced US (CEUS): Effects of perfluorobutane with CEUS was demonstrated for better visualization of solution in sciatic nerve block than B mode. In rat study, safety and no neurodegeneration of perfluorobutane was proved.
In conclusion, these studies showed possibility of safer and more precise US nerve block.

Free Research Field

麻酔蘇生学