{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T22:24:27Z","timestamp":1793312667745,"version":"4.5.0"},"reference-count":14,"publisher":"BMJ","issue":"6","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["Reg Anesth Pain Med"],"accepted":{"date-parts":[[2023,8,23]]},"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>We compared the spread of an injectate into the thoracic sympathetic chain resulting from a single-injection intertransverse process (ITP) block with that of a single-injection PV block at the T2 level.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>Sixteen soft-embalmed cadavers were used. The right hemithorax was randomly allocated to receive either an ultrasound-guided single-injection ITP block or ultrasound-guided single-injection PV block at the T2 vertebral level, with the opposite block administered to the other side. Approximately 10\u2009mL of latex dye solution was injected into each hemithorax using a random allocation technique. The presence of dye at the nerve root in the sympathetic chain and intercostal nerves at the injection and additional levels was examined by dissection.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>The injectate spread into the T2 sympathetic ganglion on both ITP (11\/16, 68.8%) and PV (16\/16, 100%) blocks. The ITP block demonstrated greater uniformity of dye staining in both the dorsal rami and dorsal root ganglion, which contrasts with the less consistent staining outcomes of the PV block in these regions.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>At the T2 level, we observed a lower efficacy of the ITP block for analgesic coverage of the sympathetic nerve. This suggested a potential preference by clinicians for the application of the T2 PV block over the ITP block, specifically for the management of sympathetically maintained pain in the upper extremities. In addition, our findings may hint at the potential advantages of the ITP block in specific clinical contexts where targeted nerve involvement, such as the medial branch block or dorsal root ganglion block, is sought.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/rapm-2023-104922","type":"journal-article","created":{"date-parts":[[2023,9,1]],"date-time":"2023-09-01T11:25:27Z","timestamp":1693567527000},"page":"436-439","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":10,"title":["Comparison of injectate spread and nerve coverage between single-injection intertransverse process block and paravertebral block at the T2 level: a cadaveric study"],"prefix":"10.1136","volume":"49","author":[{"given":"Ji Yeong","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"U-Young","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Anatomy, Catholic University of Korea College of Medicine, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2018-8090","authenticated-orcid":false,"given":"Do-Hyeong","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dong Woo","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sang Hyun","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Anatomy, Catholic University of Korea College of Medicine, Seoul, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yun Jeong","family":"Cho","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine, The Catholic University of Korea Seoul Saint Mary's Hospital, Seocho-gu, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyeyoon","family":"Jeong","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine, The Catholic University of Korea Seoul Saint Mary's Hospital, Seocho-gu, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yun Ji","family":"Kim","sequence":"additional","affiliation":[{"name":"The Catholic University of Korea Uijeongbu St Mary's Hospital, Uijeongbu, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A Rim","family":"Yang","sequence":"additional","affiliation":[{"name":"The Catholic University of Korea Uijeongbu St Mary's Hospital, Uijeongbu, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3775-1794","authenticated-orcid":false,"given":"Hue Jung","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Pain Medicine, The Catholic University of Korea Seoul Saint Mary's Hospital, Seocho-gu, Korea (the Republic of)"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2023,9,1]]},"reference":[{"key":"2025101111060780000_49.6.436.1","doi-asserted-by":"publisher","DOI":"10.1093\/bja\/81.2.230"},{"key":"2025101111060780000_49.6.436.2","doi-asserted-by":"publisher","DOI":"10.1097\/00000542-200109000-00033"},{"key":"2025101111060780000_49.6.436.3","doi-asserted-by":"publisher","DOI":"10.1097\/ALN.0000000000000747"},{"key":"2025101111060780000_49.6.436.4","doi-asserted-by":"crossref","first-page":"637","DOI":"10.1097\/ACO.0b013e32832f3277","article-title":"Paravertebral block: cervical, thoracic, lumbar, and sacral","volume":"22","author":"Boezaart","year":"2009","journal-title":"Current Opinion in 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during ultrasound guided paravertebral block","volume":"27","author":"Kus","year":"2013","journal-title":"J Cardiothorac Vasc Anesth"},{"key":"2025101111060780000_49.6.436.9","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1007\/s12630-021-02183-z","article-title":"Efficacy of regional anesthesia techniques for postoperative analgesia in patients undergoing major oncologic breast surgeries: a systematic review and network meta-analysis of randomized controlled trials","volume":"69","author":"Singh","year":"2022","journal-title":"Can J Anaesth"},{"key":"2025101111060780000_49.6.436.10","doi-asserted-by":"publisher","DOI":"10.1136\/rapm-2020-102451"},{"key":"2025101111060780000_49.6.436.11","doi-asserted-by":"crossref","first-page":"1230","DOI":"10.1111\/anae.14004","article-title":"The mid-point transverse process to pleura (MTP) block: a new end-point for thoracic paravertebral 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neuralgia in patients with acute herpes zoster: a systematic review and meta-analysis","volume":"30","author":"Kim","year":"2017","journal-title":"Korean J Pain"}],"container-title":["Regional Anesthesia &amp; Pain 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