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Author

O. Ayyad

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Open access Oct 2026

The CALLY index as a novel predictor of long-term mortality after coronary artery bypass grafting: an international multicenter retrospective cohort study

The CALLY index is a strong and independent predictor of 30-day and long-term all-cause mortality after cardiac surgery and may provide valuable incremental prognostic information for perioperative risk stratification.

O. Ayyad, H. A. Khadija, A. Kogan et al. · 0 citations
Open access Aug 2026

CT-based multi-threshold calcium scoring for aortic valve assessment: comparable predictive performance across HU thresholds in a pre-TAVI cohort.

Higher HU thresholds did not outperform conventional 130-HU scoring and showed only modest, comparable performance for within-severity hemodynamic stratification, and should be interpreted as complementary densitometric analyses rather than alternative diagnostic cut-offs.

Michael Welt, M. Alnees, Yazan Hamdan et al. · 0 citations

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