{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T04:49:01Z","timestamp":1767761341496,"version":"3.48.0"},"reference-count":10,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T00:00:00Z","timestamp":1762473600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cathet Cardio Intervent"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Chronic total occlusion (CTO) percutaneous coronary intervention (PCI) remains one of the most technically demanding areas in interventional cardiology, and although the retrograde approach has improved procedural success, rare complications such as retrograde microcatheter (MC) entrapment present a serious challenge with limited bailout options. We report the case of a 67\u2010year\u2010old male farmer with diabetes mellitus and hypertension who presented with refractory typical chest pain and a failed right coronary artery CTO PCI 3 months earlier. His J\u2010CTO score was 4, with a prior failed attempt, blunt stump, and severe angulation. A retrograde Gaia 2nd wire successfully crossed the distal cap and entered the antegrade guiding catheter; however, the retrograde MC became entrapped at a heavily calcified bend, forming a complete LAD\u2013RCA loop and resisting conventional retrieval maneuvers. A novel bailout strategy, the Balloon Over\u2010the\u2010wire Opposing Support (BOOST) Technique\u2014Sawah\u2010Sabry Approach\u2014was applied using an antegrade 2.5\u2009\u00d7\u200920\u2009mm balloon advanced within the MC to generate forward counterforce, combined with minimal retrograde traction and GuideLiner support. The MC was gradually released and retrieved safely, allowing successful implantation of three drug\u2010eluting stents with restoration of TIMI III flow.<\/jats:p>","DOI":"10.1002\/ccd.70320","type":"journal-article","created":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T09:37:16Z","timestamp":1762508236000},"page":"165-170","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Balloon Over\u2010the\u2010Wire Opposing Support (BOOST) Technique: The Sawah\u2010Sabry Approach for Retrieval of a Stuck Retrograde Microcatheter in Chronic Total Occlusion PCI\u2014A Case Report"],"prefix":"10.1002","volume":"107","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3825-9555","authenticated-orcid":false,"given":"Ahmed Mohsen","family":"Elsawah","sequence":"first","affiliation":[{"name":"Cardiology Department National Heart Institute Giza Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohamed Sabry","family":"Elhadainy","sequence":"additional","affiliation":[{"name":"Cardiology Department National Heart Institute Giza Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,11,7]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.14797\/mdcj-14-1-50"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.2174\/1573403X11666150909110300"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.4244\/EIJ-D-21-01117"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCINTERVENTIONS.115.003434"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10554-024-03068-0"},{"issue":"3","key":"e_1_2_8_7_1","first-page":"190","article-title":"Evidence for Benefit of Percutaneous Coronary Intervention for Chronically Occluded Coronary Arteries (CTO): Clinical and Health Economic Outcomes","volume":"9","author":"Rawlins J.","year":"2014","journal-title":"Interventional Cardiology Review"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCINTERVENTIONS.114.002171"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/ccd.30160"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.4244\/EIJ-D-20-00781"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/ccd.28616"}],"container-title":["Catheterization and Cardiovascular Interventions"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ccd.70320","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T04:39:55Z","timestamp":1767760795000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/ccd.70320"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,11,7]]},"references-count":10,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2026,1]]}},"alternative-id":["10.1002\/ccd.70320"],"URL":"https:\/\/doi.org\/10.1002\/ccd.70320","archive":["Portico"],"relation":{},"ISSN":["1522-1946","1522-726X"],"issn-type":[{"type":"print","value":"1522-1946"},{"type":"electronic","value":"1522-726X"}],"subject":[],"published":{"date-parts":[[2025,11,7]]},"assertion":[{"value":"2025-09-27","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-10-30","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-11-07","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}