Ultrasound-guided transversus abdominis plane injection with computed tomography correlation: a cadaveric study
Susan M Moeschler,1 Naveen S Murthy,2 Bryan C Hoelzer,1 Halena M Gazelka,1 Richard H Rho,1 Matthew J Pingree1,31Department of Anesthesiology, 2Department of Radiology, 3Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota, USABackground: Ultrasound-guided transversus...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Dove Medical Press
2013-07-01
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| Series: | Journal of Pain Research |
| Online Access: | http://www.dovepress.com/ultrasound-guided-transversus-abdominis-plane-injection-with-computed--a13527 |
| _version_ | 1828492006552240128 |
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| author | Moeschler SM Murthy NS Hoelzer BC Gazelka HM Rho RH Pingree MJ |
| author_facet | Moeschler SM Murthy NS Hoelzer BC Gazelka HM Rho RH Pingree MJ |
| author_sort | Moeschler SM |
| collection | DOAJ |
| description | Susan M Moeschler,1 Naveen S Murthy,2 Bryan C Hoelzer,1 Halena M Gazelka,1 Richard H Rho,1 Matthew J Pingree1,31Department of Anesthesiology, 2Department of Radiology, 3Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota, USABackground: Ultrasound-guided transversus abdominis plane (TAP) injections are increasingly being used as an alternative to traditional perioperative analgesia in the abdominal region. With the use of a "blind" TAP block technique, these procedures have had variable success in cadaver and in vivo studies. For more accurate injection with the intended medication, ultrasound guidance allows visualization of the correct layer of the abdominal wall planes in which the thoracolumbar nerves reside.Objective: To assess the spread of various volumes of contrast placed under live ultrasound guidance into the TAP using computed tomography (CT).Methods: Four TAP blocks were performed on 2 fresh frozen cadaver torsos with predetermined contrast volumes of 5, 10, 15, or 20 mL. A CT scan of the cadaver was then performed and interpreted by a musculoskeletal radiologist. This cadaver study was carried out at a tertiary care academic medical center.Results: Cranial–caudal spread of injected contrast correlated with increasing injectate volume and was roughly 1 vertebral level (end plate to end plate) for the 5 mL injection and 2 vertebral levels for the 10, 15, and 20 mL injections. However, the degree of injectate spread may be different for live patients than for cadavers.Conclusion: This study helps further the understanding of injectate spread following ultrasound-guided TAP injections. Specifically, it suggests that 15 mL provides additional cranial–caudal spread and may be an optimal volume of anesthesia.Keywords: abdominal cadaver study, abdominal computed tomography scan, abdominal wall pain, TAP block, ultrasound-guided injection |
| first_indexed | 2024-12-11T11:12:53Z |
| format | Article |
| id | doaj.art-5f3ffc7847864f07ab395dbd95b3458c |
| institution | Directory Open Access Journal |
| issn | 1178-7090 |
| language | English |
| last_indexed | 2024-12-11T11:12:53Z |
| publishDate | 2013-07-01 |
| publisher | Dove Medical Press |
| record_format | Article |
| series | Journal of Pain Research |
| spelling | doaj.art-5f3ffc7847864f07ab395dbd95b3458c2022-12-22T01:09:27ZengDove Medical PressJournal of Pain Research1178-70902013-07-012013default493496Ultrasound-guided transversus abdominis plane injection with computed tomography correlation: a cadaveric studyMoeschler SMMurthy NSHoelzer BCGazelka HMRho RHPingree MJSusan M Moeschler,1 Naveen S Murthy,2 Bryan C Hoelzer,1 Halena M Gazelka,1 Richard H Rho,1 Matthew J Pingree1,31Department of Anesthesiology, 2Department of Radiology, 3Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota, USABackground: Ultrasound-guided transversus abdominis plane (TAP) injections are increasingly being used as an alternative to traditional perioperative analgesia in the abdominal region. With the use of a "blind" TAP block technique, these procedures have had variable success in cadaver and in vivo studies. For more accurate injection with the intended medication, ultrasound guidance allows visualization of the correct layer of the abdominal wall planes in which the thoracolumbar nerves reside.Objective: To assess the spread of various volumes of contrast placed under live ultrasound guidance into the TAP using computed tomography (CT).Methods: Four TAP blocks were performed on 2 fresh frozen cadaver torsos with predetermined contrast volumes of 5, 10, 15, or 20 mL. A CT scan of the cadaver was then performed and interpreted by a musculoskeletal radiologist. This cadaver study was carried out at a tertiary care academic medical center.Results: Cranial–caudal spread of injected contrast correlated with increasing injectate volume and was roughly 1 vertebral level (end plate to end plate) for the 5 mL injection and 2 vertebral levels for the 10, 15, and 20 mL injections. However, the degree of injectate spread may be different for live patients than for cadavers.Conclusion: This study helps further the understanding of injectate spread following ultrasound-guided TAP injections. Specifically, it suggests that 15 mL provides additional cranial–caudal spread and may be an optimal volume of anesthesia.Keywords: abdominal cadaver study, abdominal computed tomography scan, abdominal wall pain, TAP block, ultrasound-guided injectionhttp://www.dovepress.com/ultrasound-guided-transversus-abdominis-plane-injection-with-computed--a13527 |
| spellingShingle | Moeschler SM Murthy NS Hoelzer BC Gazelka HM Rho RH Pingree MJ Ultrasound-guided transversus abdominis plane injection with computed tomography correlation: a cadaveric study Journal of Pain Research |
| title | Ultrasound-guided transversus abdominis plane injection with computed tomography correlation: a cadaveric study |
| title_full | Ultrasound-guided transversus abdominis plane injection with computed tomography correlation: a cadaveric study |
| title_fullStr | Ultrasound-guided transversus abdominis plane injection with computed tomography correlation: a cadaveric study |
| title_full_unstemmed | Ultrasound-guided transversus abdominis plane injection with computed tomography correlation: a cadaveric study |
| title_short | Ultrasound-guided transversus abdominis plane injection with computed tomography correlation: a cadaveric study |
| title_sort | ultrasound guided transversus abdominis plane injection with computed tomography correlation a cadaveric study |
| url | http://www.dovepress.com/ultrasound-guided-transversus-abdominis-plane-injection-with-computed--a13527 |
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