{"schema_version":"bookimed.page-context.v1","id":"clinic-newheart-watanabe","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","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":"clinic-profile","title":"NewHeart Watanabe Institute: heart surgery expertise","summary":"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.","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":"124 Barlow repairs","text":"The 2015–2022 robotic cohort included 124 selected patients, with no conversion to valve replacement.","sources":["pd-adult-watanabe124"]},{"label":"Reported complications","text":"The report recorded four bleeding events and one stroke; a small incision did not eliminate procedural risk.","sources":["pd-adult-watanabe124"]},{"label":"Follow-up beyond discharge","text":"Freedom from reoperation was 99.2% during mean follow-up of 36 months.","sources":["pd-adult-watanabe124"]}],"benefits":[{"text":"The published Barlow technique combines artificial chordae and selective leaflet resection to retain a complex native mitral valve.","sources":["pd-adult-watanabe124","pd-adult-watanabe-official"]}],"limitations":[{"text":"Freedom from reoperation does not equal freedom from recurrent leakage. This is an uncontrolled institutional series and does not allocate every repair to director Go Watanabe.","sources":["pd-adult-watanabe124","pd-adult-watanabe-official"]}],"sections":[{"id":"benefit-balance","title":"Clinical benefits and limitations","text":"Clinical benefits and limitations Potential advantages The published Barlow technique combines artificial chordae and selective leaflet resection to retain a complex native mitral valve. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. · Robot-assisted surgery and team profiles Trade-offs and limits Freedom from reoperation does not equal freedom from recurrent leakage. This is an uncontrolled institutional series and does not allocate every repair to director Go Watanabe. 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":"Robot-assisted surgery and team profiles","url":"https://newheartwatanabe.com/en/"},{"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":"specialists","title":"Specialists and their clinical work","text":"Specialists and their clinical work Portrait source ↗ Tokyo · Japan cardiac surgeon Go Watanabe → 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. NewHeart Watanabe Institute → Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. · Robot-assisted surgery and team profiles View expertise and research →","links":[{"label":"Portrait source ↗","url":"https://newheart.jp/introduction/greeting.php"},{"label":"Go Watanabe →","url":"https://hub.bookimed.com/heart-surgery/doctor-go-watanabe/"},{"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":"View expertise and research →","url":"https://hub.bookimed.com/heart-surgery/doctor-go-watanabe/"}]},{"id":"evidence","title":"Procedure-specific research","text":"Procedure-specific research Read alongside Go Watanabe’s profile → 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":"Go Watanabe’s profile →","url":"https://hub.bookimed.com/heart-surgery/doctor-go-watanabe/"},{"label":"Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery.","url":"https://pubmed.ncbi.nlm.nih.gov/38152230/"}]}],"introduction":"Heart surgery guide / NewHeart Watanabe Institute NewHeart Watanabe Institute · Decision guide NewHeart Watanabe Institute: heart surgery expertise Tokyo, Japan · Robotic Barlow repair using an anatomy-specific strategy Research by Yevhenii Kozlov · Co-Founder of Bookimed Updated 8 October 2026 Sources linked throughout At a glance 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. 124 Barlow repairs The 2015–2022 robotic cohort included 124 selected patients, with no conversion to valve replacement. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. Reported complications The report recorded four bleeding events and one stroke; a small incision did not eliminate procedural risk. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. Follow-up beyond discharge Freedom from reoperation was 99.2% during mean follow-up of 36 months. Sources: Outcomes of Barlow mitral valve repaired by robot-assisted keyhole surgery. NewHeart Watanabe Institute entrance, from the institute’s official facility overview. · Image 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":"heart-valve-surgery","title":"Heart valve surgery: repair, replacement and catheter options","kind":"guide","url":"https://hub.bookimed.com/heart-surgery/heart-valve-surgery/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/heart-valve-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":"clinics","title":"Heart surgery clinics: compare techniques and specialist teams","kind":"directory","url":"https://hub.bookimed.com/heart-surgery/clinics/","json_url":"https://hub.bookimed.com/wp-content/uploads/heart-surgery-hub-20261007/pages/clinics.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":"doctor-go-watanabe","title":"Go Watanabe: robotic mitral valve repair","kind":"doctor-profile","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"},{"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":"newheart-watanabe","name":"NewHeart Watanabe Institute","country":"Japan","city":"Tokyo","surgeon_ids":["go-watanabe"],"source_attested_services":["robotic mitral repair","robotic valve surgery","Barlow mitral repair"],"patient_task_fit":"Robotic Barlow repair using an anatomy-specific strategy","source_ids":["pd-adult-watanabe124","pd-adult-watanabe-official"],"bookimed_route":null,"clinic_route":null,"official_url":"https://newheartwatanabe.com/en/","value_headline":"Robotic Barlow repair using an anatomy-specific strategy","value_summary":"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.","comparison_question":"","highlights":[{"label":"124 Barlow repairs","text":"The 2015–2022 robotic cohort included 124 selected patients, with no conversion to valve replacement.","source_ids":["pd-adult-watanabe124"]},{"label":"Reported complications","text":"The report recorded four bleeding events and one stroke; a small incision did not eliminate procedural risk.","source_ids":["pd-adult-watanabe124"]},{"label":"Follow-up beyond discharge","text":"Freedom from reoperation was 99.2% during mean follow-up of 36 months.","source_ids":["pd-adult-watanabe124"]}],"guide_links":[{"slug":"mitral-valve-repair","label":"Compare repair strategies"},{"slug":"minimally-invasive","label":"Understand robotic valve surgery"}],"topic_mapping":[{"slug":"mitral-valve-repair","services":["robotic mitral repair","robotic valve surgery","Barlow mitral repair"]},{"slug":"minimally-invasive","services":["robotic mitral repair","robotic valve surgery","Barlow mitral repair"]}],"photo_candidate":{"url":"https://newheartwatanabe.com/en/img/index/overview-img02.png","source_page":"https://newheartwatanabe.com/en/","alt":"Exterior of NewHeart Watanabe Institute","source_alt":"NEWHEART WATANABE INSTITUTEファサード","provenance":"URL observed on official page; image bytes not downloaded; coordinator to inspect before use."},"additional_photo_candidates":[{"url":"https://newheartwatanabe.com/en/img/index/overview-img03.png","source_page":"https://newheartwatanabe.com/en/","alt":"Entrance at NewHeart Watanabe Institute","source_alt":"エントランス","provenance":"URL observed on official page; image bytes not downloaded; coordinator to inspect before use."},{"url":"https://newheartwatanabe.com/en/img/index/overview-img05.png","source_page":"https://newheartwatanabe.com/en/","alt":"Private inpatient room at NewHeart Watanabe Institute","source_alt":"入院個室","provenance":"URL observed on official page; image bytes not downloaded; coordinator to inspect before use."}],"topics":["mitral","minimal","valve"],"profile_slug":"clinic-newheart-watanabe","photo":{"source_page":"https://newheartwatanabe.com/en/","width":434,"height":308,"alt":"Entrance of NewHeart Watanabe Institute","caption":"NewHeart Watanabe Institute entrance, from the institute’s official facility overview.","url":"https://hub.bookimed.com/wp-content/uploads/2026/10/newheart-watanabe.png"},"comparison_answer":"The published Barlow technique combines artificial chordae and selective leaflet resection to retain a complex native mitral valve.","key_takeaways":[{"label":"124 Barlow repairs","text":"The 2015–2022 robotic cohort included 124 selected patients, with no conversion to valve replacement.","sources":["pd-adult-watanabe124"]},{"label":"Reported complications","text":"The report recorded four bleeding events and one stroke; a small incision did not eliminate procedural risk.","sources":["pd-adult-watanabe124"]},{"label":"Follow-up beyond discharge","text":"Freedom from reoperation was 99.2% during mean follow-up of 36 months.","sources":["pd-adult-watanabe124"]}],"benefits":[{"text":"The published Barlow technique combines artificial chordae and selective leaflet resection to retain a complex native mitral valve.","sources":["pd-adult-watanabe124","pd-adult-watanabe-official"]}],"limitations":[{"text":"Freedom from reoperation does not equal freedom from recurrent leakage. This is an uncontrolled institutional series and does not allocate every repair to director Go Watanabe.","sources":["pd-adult-watanabe124","pd-adult-watanabe-official"]}],"patient_sections":[{"id":"benefit-balance","title":"Clinical benefits and limitations","paragraphs":[],"items":[],"sources":[],"kind":"benefit-balance","links":[],"table":null},{"id":"specialists","title":"Specialists and their clinical work","paragraphs":[],"items":[],"sources":[],"kind":"clinic-doctors","links":[],"table":null},{"id":"evidence","title":"Procedure-specific research","paragraphs":[],"items":[],"sources":[],"kind":"clinic-evidence","links":[],"table":null}]},"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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