{"schema_version":"bookimed.page-context.v1","id":"doctor-go-watanabe","url":"https://hub.bookimed.com/heart-surgery/doctor-go-watanabe/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/doctor-go-watanabe.json","index_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/index.json","full_dataset_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/content.json","content_revision":"source-driven-rankings-20261008","date_modified":"2026-10-08","language":"en","kind":"doctor-profile","title":"Go Watanabe: robotic mitral valve repair","summary":"Go Watanabe directs NewHeart Watanabe Institute in Tokyo. Its published Barlow strategy uses artificial chordae first and adds leaflet resection when needed to limit systolic anterior motion.","research_credit":{"name":"Yevhenii Kozlov","role":"Co-Founder of Bookimed","url":"https://us-uk.bookimed.com/ceo/kozlov/","contribution":"Research personally prepared and reviewed","assistance":"AI tools assisted source research."},"editorial_scope":"Source-based patient information; an individual treatment plan requires clinical review.","research_method":"How this guide is researched and compared Research project led by Yevhenii Kozlov . We link clinical guidance, primary studies and named hospital or offer sources beside the relevant statements. Comparisons distinguish individual operators from programme results and preserve the study population, follow-up and limitations. Prices are dated examples with their stated scope. Research and editorial preparation are separate from clinical review; no named clinician has medically reviewed this edition. Bookimed provides care coordination. Partner and reference programmes are identified from their sources; paid ordering is not used in our published-cohort comparison. Read the editorial policy .","key_takeaways":[{"label":"A defined repair strategy","text":"The Barlow series prioritised artificial chordae, adding leaflet resection when needed for valve geometry and systolic anterior motion.","sources":["pd-adult-watanabe124"]},{"label":"124 selected robotic repairs","text":"In the 2015–2022 team series, none converted to valve replacement; four bleeding events and one stroke were reported.","sources":["pd-adult-watanabe124"]},{"label":"Follow-up outcome","text":"Freedom from reoperation was 99.2% during mean follow-up of 36 months. This does not mean freedom from every recurrent leak.","sources":["pd-adult-watanabe124"]}],"benefits":[{"text":"The published robotic Barlow strategy retains the valve using artificial chordae and selective leaflet resection to manage abnormal leaflet motion.","sources":["pd-adult-watanabe124"]}],"limitations":[{"text":"Watanabe coauthored this single-centre study; individual operator allocation is not given. Its results cannot establish that robotic access is superior to conventional repair.","sources":["pd-adult-watanabe124","pd-adult-watanabe-official"]}],"sections":[{"id":"benefit-balance","title":"Benefits and limitations","text":"Benefits and limitations Potential advantages The published robotic Barlow strategy retains the valve using artificial chordae and selective leaflet resection to manage abnormal leaflet motion. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. Trade-offs and limits Watanabe coauthored this single-centre study; individual operator allocation is not given. Its results cannot establish that robotic access is superior to conventional repair. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. · Robot-assisted surgery and team profiles","links":[{"label":"Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery.","url":"https://pubmed.ncbi.nlm.nih.gov/38152230/"},{"label":"Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery.","url":"https://pubmed.ncbi.nlm.nih.gov/38152230/"},{"label":"Robot-assisted surgery and team profiles","url":"https://newheartwatanabe.com/en/"}]},{"id":"research","title":"Procedure-specific research","text":"Procedure-specific research 124 robotic Barlow repairs Watanabe coauthored the 2015–2022 series. None of the 124 patients converted to valve replacement; reported complications included four bleeding events and one stroke. Freedom from reoperation was 99.2% during mean follow-up of 36 months. How to interpret this: Single-institution observational study without a randomized access comparison. Freedom from reoperation is not the same as freedom from recurrent leakage, and authorship does not allocate every case to one surgeon. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery.","links":[{"label":"Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery.","url":"https://pubmed.ncbi.nlm.nih.gov/38152230/"}]},{"id":"team","title":"Clinical programme","text":"Clinical programme NewHeart Watanabe Institute → Tokyo, Japan NewHeart Watanabe’s published mitral work focuses on Barlow disease, a complex form of prolapse. The team used artificial chordae as its first strategy and added leaflet resection when needed to manage systolic anterior motion. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. · Robot-assisted surgery and team profiles Explore the programme and other specialists →","links":[{"label":"NewHeart Watanabe Institute →","url":"https://hub.bookimed.com/heart-surgery/clinic-newheart-watanabe/"},{"label":"Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery.","url":"https://pubmed.ncbi.nlm.nih.gov/38152230/"},{"label":"Robot-assisted surgery and team profiles","url":"https://newheartwatanabe.com/en/"},{"label":"Explore the programme and other specialists →","url":"https://hub.bookimed.com/heart-surgery/clinic-newheart-watanabe/"}]}],"introduction":"Heart surgery guide / Go Watanabe Go Watanabe · Decision guide Go Watanabe: robotic mitral valve repair Robotic repair for complex Barlow mitral valves · Tokyo, Japan Research by Yevhenii Kozlov · Co-Founder of Bookimed Updated 8 October 2026 Sources linked throughout At a glance Go Watanabe directs NewHeart Watanabe Institute in Tokyo. Its published Barlow strategy uses artificial chordae first and adds leaflet resection when needed to limit systolic anterior motion. A defined repair strategy The Barlow series prioritised artificial chordae, adding leaflet resection when needed for valve geometry and systolic anterior motion. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. 124 selected robotic repairs In the 2015–2022 team series, none converted to valve replacement; four bleeding events and one stroke were reported. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. Follow-up outcome Freedom from reoperation was 99.2% during mean follow-up of 36 months. This does not mean freedom from every recurrent leak. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. Portrait source ↗ cardiac surgeon Go Watanabe NewHeart Watanabe Institute → Director, NewHeart Watanabe Institute Director, NewHeart Watanabe Institute · Tokyo, Japan. Read the clinical or research source ↗ Reported surgical experience 292 mitral valve operations Programme operations · Calendar year 2025 · counting date 2025-12-31 Mitral valve operations including combined procedures; all approaches. NewHeart Watanabe Institute surgical activity and outcomes ↗ · source read 2026-10-08 171 isolated mitral valve operations Programme operations · Calendar year 2025 · counting date 2025-12-31 Isolated mitral valve operations; repair/replacement combined; all approaches. NewHeart Watanabe Institute surgical activity and outcomes ↗ · source read 2026-10-08 1,386 robotic mitral repairs (MVP category) Programme operations · 2005-12 – 2026-09 Robotic mitral repair category; named combined categories reported separately. NewHeart Watanabe Institute surgical activity and outcomes ↗ · source read 2026-10-08 542 combined robotic mitral and tricuspid repairs Programme operations · 2005-12 – 2026-09 Robotic combined mitral repair and tricuspid repair. NewHeart Watanabe Institute surgical activity and outcomes ↗ · source read 2026-10-08 2,542 All robotic cardiac operations across conditions Programme operations · 2005-12 – 2026-09 All robotic cardiac operations across conditions. NewHeart Watanabe Institute English programme page ↗ · source read 2026-10-08 Compare mitral valve surgery experience →","related_documents":[{"id":"heart-surgery","title":"Heart surgery abroad: treatments, clinics and costs","kind":"home","url":"https://hub.bookimed.com/heart-surgery/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/heart-surgery.json"},{"id":"minimally-invasive","title":"Minimally invasive and robotic heart surgery","kind":"guide","url":"https://hub.bookimed.com/heart-surgery/minimally-invasive/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/minimally-invasive.json"},{"id":"surgeons","title":"Find cardiac surgeons and heart specialists by procedure","kind":"surgeons","url":"https://hub.bookimed.com/heart-surgery/surgeons/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/surgeons.json"},{"id":"mitral-valve-repair","title":"Mitral valve prolapse and regurgitation: repair or replacement?","kind":"guide","url":"https://hub.bookimed.com/heart-surgery/mitral-valve-repair/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/mitral-valve-repair.json"},{"id":"surgeon-rankings","title":"Heart surgeon rankings by reported experience, method and results","kind":"guide","url":"https://hub.bookimed.com/heart-surgery/surgeon-rankings/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/surgeon-rankings.json"},{"id":"clinic-newheart-watanabe","title":"NewHeart Watanabe Institute: heart surgery expertise","kind":"clinic-profile","url":"https://hub.bookimed.com/heart-surgery/clinic-newheart-watanabe/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/clinic-newheart-watanabe.json"},{"id":"mitral-valve-repair-surgeon-comparison","title":"Mitral valve repair surgeon rankings: experience, methods and results","kind":"evidence-directory","url":"https://hub.bookimed.com/heart-surgery/mitral-valve-repair-surgeon-comparison/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/mitral-valve-repair-surgeon-comparison.json"}],"entity":{"id":"go-watanabe","name":"Go Watanabe","programme_id":"newheart-watanabe","role":"Director, NewHeart Watanabe Institute","procedure_relevance":["Robotic mitral repair, including Barlow disease; keyhole valve surgery."],"source_ids":["pd-adult-watanabe124","pd-adult-watanabe-official"],"official_url":"https://newheartwatanabe.com/en/","discipline":"cardiac surgeon","topic_slugs":["mitral-valve-repair","minimally-invasive","heart-valve-surgery"],"profile":{"intro":"Go Watanabe directs NewHeart Watanabe Institute in Tokyo. Its published Barlow strategy uses artificial chordae first and adds leaflet resection when needed to limit systolic anterior motion.","clinical_focus":[{"label":"A defined repair strategy","text":"The Barlow series prioritised artificial chordae, adding leaflet resection when needed for valve geometry and systolic anterior motion.","source_ids":["pd-adult-watanabe124"]},{"label":"124 selected robotic repairs","text":"In the 2015–2022 team series, none converted to valve replacement; four bleeding events and one stroke were reported.","source_ids":["pd-adult-watanabe124"]},{"label":"Follow-up outcome","text":"Freedom from reoperation was 99.2% during mean follow-up of 36 months. This does not mean freedom from every recurrent leak.","source_ids":["pd-adult-watanabe124"]}],"evidence":[{"title":"124 robotic Barlow repairs","summary":"Watanabe coauthored the 2015–2022 series. 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Its results cannot establish that robotic access is superior to conventional repair.","sources":["pd-adult-watanabe124","pd-adult-watanabe-official"]}],"patient_sections":[{"id":"benefit-balance","title":"Benefits and limitations","paragraphs":[],"items":[],"sources":[],"kind":"benefit-balance","links":[],"table":null},{"id":"research","title":"Procedure-specific research","paragraphs":[],"items":[],"sources":[],"kind":"doctor-evidence","links":[],"table":null},{"id":"team","title":"Clinical programme","paragraphs":[],"items":[],"sources":[],"kind":"doctor-clinic","links":[],"table":null}]},"photo_candidate":{"url":"https://newheart.jp/introduction/img/greeting/pic_watanabe.png","source_page":"https://newheart.jp/introduction/greeting.php","alt":"Portrait of Go Watanabe","source_alt":"院長　渡邊 剛2","provenance":"URL observed on official page; image bytes not downloaded; coordinator to inspect before use."},"topics":["mitral","minimal","valve"],"headline":"robotic mitral valve repair","profile_slug":"doctor-go-watanabe","portrait":{"url":"https://hub.bookimed.com/wp-content/uploads/2026/10/go-watanabe-157x300.png","source_page":"https://newheart.jp/introduction/greeting.php","width":260,"height":496,"alt":"Portrait of Go Watanabe"}},"ranking":{"engine_version":"reported-volume-v1","facts_digest":"b2057ed11422aaf9ecbef7849da5e5c2be583ed36f70e64a8a183767f7154fef","calculated_at":"2026-10-08","facts":[{"id":"cc-isolated-mv-all-2025","provider_id":"marc-gillinov","family":"mitral","subject_scope":"programme","measurement":"annual","procedure":"isolated_mitral_surgery","inclusion_scope":"isolated","value":614,"relation":"exact","display":"614","unit":"Isolated mitral valve repair or replacement; all approaches","period_label":"Calendar year 2025","reported_as_of":"2025-12-31","method":"Isolated mitral valve repair or replacement; all approaches.  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