Optimal Wiring Direction in Iatrogenic Left Main Coronary Artery Dissection: Clinical Cases and Bench Validation
Tatsuhiro Fujimura1, Takayuki Okamura1, Yosuke Miyazaki1
1Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan.
Insights
Optimal wiring during left main coronary artery dissection is crucial. Directing the wire toward the myocardial side may quickly restore blood flow in iatrogenic dissections.
Area of Science:
- Interventional Cardiology
- Cardiovascular Imaging
Background:
- Iatrogenic left main coronary artery dissection is a complication of cardiac catheterization.
- Intracoronary imaging aids in evaluating these dissections, but optimal management strategies are debated.
Purpose of the Study:
- To determine the optimal initial wiring direction for iatrogenic left main coronary artery dissection.
Main Methods:
- Analysis of 4 cases of iatrogenic left main coronary artery dissection.
- Bench analysis of common left coronary catheters' alignment.
- Evaluation of wiring strategies in the left anterior oblique projection.
Main Results:
- Dissection entry was consistently on the epicardial side, with the true lumen on the myocardial side.
- Standard left coronary catheters tend to align toward the epicardial side.
- Wiring toward the myocardial side demonstrated potential for rapid flow restoration.
Conclusions:
- Wiring toward the myocardial side is a promising strategy for rapid true lumen access in iatrogenic left main dissection.
Image(S):
Intracoronary imaging is useful in evaluating iatrogenic left main coronary artery dissection. However, the optimal initial wiring direction remains unclear.
Case Summary:
We report 4 cases of iatrogenic left main coronary artery dissection caused by coronary catheters. In all cases, the dissection entry was on the epicardial side, and the true lumen was located on the myocardial side. Bench analysis showed that commonly used left coronary catheters consistently aligned toward the epicardial side. These findings suggest that wiring toward the myocardial side in the left anterior oblique projection may enable rapid restoration of flow.
Take-Home Message:
Wiring toward the myocardial side may facilitate rapid access to the true lumen in iatrogenic left main dissection.
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