What is the clinical evidence from this study?

Study design: Observational. Population: Transcatheter aortic valve implantation (TAVI) (n=60). Intervention: Commissural misalignment vs. Commissural alignment. Primary outcome: Paravalvular leak (p=0.001).

What does this research mean for the field?

Commissural alignment after TAVI was achieved in 90% of patients, reducing paravalvular leak incidence to 40.7% compared to 100% in those with mild misalignment (p=0.001). Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.SUPPORTS_CONSENSUS.

What question did this study set out to answer?

To evaluate commissural alignment in transcatheter heart valves and its effects on coronary access, function, and clinical outcomes.

February 6, 2026European Heart Journal

Assessment of commissural and coronary ostial alignment of aortic valve bioprosthesis after transcatheter aortic valve implantation

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Key result

Commissural alignment during TAVI linked to ~59% lower paravalvular leak incidence versus mild misalignment.

P=0.001
n=60

Why the study?

Optimizing commissural alignment in TAVI is essential for coronary access, valve re-intervention, and durability, but its degree and clinical implications required further evaluation.

Does achieving commissural alignment during TAVI reduce coronary ostial overlap and improve procedural outcomes in TAVI patients?

Population

60 TAVI patients

Comparison

Commissural aligned group vs commissural misalignment group

Design

Observational cohort study using pre- and post-procedure MDCT

Authors

HSH Gamal SayedCairo University MAM AbdelmeguidCairo University RAR E D A AbuelattaNational Heart Institute

Discussion

Member takes

Implication

Commissural alignment may reduce paravalvular leak after TAVI; leaves open whether intentional alignment improves outcomes in randomized trials.

Key Points

To evaluate commissural alignment in transcatheter heart valves and its effects on coronary access, function, and clinical outcomes.
Conducted multidetector computed tomography scans on 60 TAVI patients pre- and post-procedure.
Categorized commissural alignment as aligned, mild, moderate, or severe misalignment.
Assessed coronary overlap between transcatheter heart valve commissures and coronary ostia.
Ninety percent of cases showed aligned commissural alignment; only 10% had mild misalignment.
85% exhibited no coronary overlap, while 15% had moderate overlap.
The CMA group had a higher calcium score and incidence of paravalvular leaks and complete heart block.

Study Design

Type

Observational (n=60)

Structured PICO

Does achieving commissural alignment during TAVI reduce coronary ostial overlap and improve procedural outcomes in TAVI patients?

Population

60 patients undergoing transcatheter aortic valve implantation evaluated for commissural alignment and its clinical implications using MDCT.

Exposure

TAVI procedure performed with the aim of achieving commissural alignment

Comparator

Patients with commissural misalignment (CMA) vs. aligned patients

Outcome

Degree of commissural alignment between the transcatheter heart valve (THV) and the native aortic valve, and coronary overlapsurrogate

Main Result

Absolute Event Rate: 100% vs 40.7%

p-value: p=0.001

Achieving commissural alignment during TAVI significantly reduces coronary ostial overlap, paravalvular leak, and the need for permanent pacemaker implantation.

Cite This Study

Sayed et al. (2025) conducted an observational in Transcatheter aortic valve implantation (TAVI) (n=60). Commissural misalignment vs. Commissural alignment was evaluated on Paravalvular leak (p=0.001). Commissural misalignment after TAVI was associated with higher rates of moderate coronary overlap (83.3% vs 7.4%), paravalvular leak (100% vs 40.7%), and complete heart block (33.3% vs 9.3%).

synapsesocial.com/papers/698586ad8f7c464f2300a6cc https://doi.org/10.1093/eurheartj/ehaf784.3193

Topics

Transcatheter aortic valve replacement TAVR in low-risk patients Coronary CT angiography

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Implication

Commissural alignment may reduce paravalvular leak after TAVI; leaves open whether intentional alignment improves outcomes in randomized trials.

Assessment of commissural and coronary ostial alignment of aortic valve bioprosthesis after transcatheter aortic valve implantation

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Topics

Assessment of commissural and coronary ostial alignment of aortic valve bioprosthesis after transcatheter aortic valve implantation

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Also Consider

Topics

Also Consider