Mechanisms of Medial Wall Thinning in Chronic Total Occlusion
Authors' conclusion
CTO lesions demonstrated coronary medial thinning compared with non-CTO lesions.
Study context
- Population
- Subjects with coronary chronic total occlusion (CTO) and matched subjects with non-coronary-related deaths2,586 sections
- Participants
- 54 vs 54
- Comparison
- Arteries with CTO vs arteries without CTO
- CTOn = 54
- Non-coronary-related deathn = 54reference
- Outcome
- Coronary medial wall thickness
Methodological detailsautopsy histopathology, matched for age, gender, body weight and body height
- Autopsy histopathology
- Matched for age, gender, body weight and body height
Main finding
As reported in the abstract
Medial thickness
- Medial thickness lower in CTO than in non-coronary-related death
- P < 0.001
- Within CTO subjects, CTO lesions had thinner medial walls than lesions with lower luminal narrowing
- P < 0.001
- 6- to 12-mm distal segment: significantly less luminal narrowing than CTO distal end
- P < 0.001
Further findings
Immunohistochemistry, short- vs long-duration CTO
- Short-duration CTO had more cleaved caspase-3-positive cells in media and significantly more CD3+, CD4+, CD8+ and CD4+CD28null T cells than long-duration CTO
Original publication
Mechanisms of Medial Wall Thinning in Chronic Total Occlusion. JACC Cardiovasc Interv. Published 3 July 2024. doi:10.
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