Improvement of Heart Function in Chronic Total Coronary Occlusion
Author Information
Author(s): Yang Yuesong, Strauss Bradley, Qiang Beiping, Osherov Azriel, Graham John J, Liu Garry, Qi Xiuling, Munce Nigel R, Ladouceur-Wodzk Michelle, Robert Normand, Dick Alexander J, Wright Graham A
Primary Institution: Sunnybrook Health Sciences Centre
Hypothesis
Is left ventricular function improvement associated with collateral development in chronic total occlusion?
Conclusion
Extensive collateral development during the late stage of myocardial repair after chronic total occlusion may improve heart function.
Supporting Evidence
- Ejection fraction improved significantly from 26.27% to 39.45% between 6 and 12 weeks.
- Wall thickness and systolic wall thickening also increased significantly over the same period.
- Collateral development scores increased from 1.33 to 2.83 between 6 and 12 weeks.
Takeaway
When the heart has blocked arteries, developing new blood vessels can help it work better over time.
Methodology
Nine pigs underwent a procedure to create a chronic total occlusion, followed by imaging and functional assessments at 6 and 12 weeks.
Limitations
The study was conducted on a small animal model, which may not fully represent human physiology.
Participant Demographics
Nine pigs were used in the study.
Statistical Information
P-Value
0.01
Statistical Significance
p<0.003
Digital Object Identifier (DOI)
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