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.