Key result
Crab-Walk TEER reduces MR to mild, leaving the patient asymptomatic at 1 year.
Why the study?
Mitral annular calcification complicates transcatheter interventions for degenerative mitral regurgitation, particularly with small mitral valve orifice areas.
Does TEER using the Crab-Walk technique improve outcomes in a patient with DMR, MAC, and small MVOA?
Case Report (n=1)
Does TEER using the Crab-Walk technique improve outcomes in a patient with DMR, MAC, and small MVOA?
TEER using the "Crab-Walk" technique is a viable option for patients with degenerative mitral regurgitation, significant MAC, and small MVOA when transcatheter mitral valve replacement is prohibitive.
Crab-Walk TEER may be feasible in select DMR with MAC and small MVOA when TMVR is prohibitive; case report leaves open need for comparative data.
Background: Mitral annular calcification (MAC) complicates transcatheter interventions for degenerative mitral regurgitation (DMR), particularly with small mitral valve orifice areas (MVOAs). Case Summary: ) limited options to transcatheter edge-to-edge repair (TEER). Using the Edwards PASCAL precision system and the "Crab-Walk" technique (independent leaflet clasp manipulation for MAC-related challenges), TEER reduced mitral regurgitation to mild (1+), with a 2 mmHg gradient at 3 months. The patient was weaned off oxygen and remains asymptomatic at 1 year. Discussion: This first reported mitral TEER case in DMR with significant MAC and small MVOA highlights the "Crab-Walk" technique's innovation. Take-Home Messages: TEER with novel techniques is viable for DMR with MAC when transcatheter mitral valve replacement is prohibitive.
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Abdelmalek et al. (2025) conducted a case report in Degenerative mitral regurgitation with mitral annular calcification (n=1). Mitral Transcatheter Edge-to-Edge Repair (TEER) using the Crab-Walk technique was evaluated on Mitral regurgitation severity and gradient. Mitral transcatheter edge-to-edge repair using the Crab-Walk technique reduced mitral regurgitation to mild (1+) with a 2 mmHg gradient at 3 months, leaving the patient asymptomatic at 1 year.
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