Related Experiment Videos
Assessment of collateral flow during balloon coronary occlusion by intracoronary blood flow velocity analysis
J J Piek1, K T Koch, R van Liebergen
1Department of Cardiology, Academic Medical Centre, University of Amsterdam, The Netherlands.
Insights
Coronary blood flow velocity analysis helps assess collateral circulation during balloon occlusion. Combining this with pressure measurements quantifies collateral flow and resistance, aiding clinical assessment.
Area of Science:
- Cardiovascular Physiology
- Interventional Cardiology
Background:
- Assessing collateral circulation is crucial for managing coronary artery disease.
- Controlled balloon coronary occlusion provides a model for studying collateral flow dynamics.
Observation:
- Coronary blood flow velocity in both ipsilateral and contralateral arteries can be measured.
- Aortic pressure and coronary wedge pressure can be simultaneously recorded.
Findings:
- Coronary blood flow velocity analysis, alongside pressure measurements, allows for the quantification of collateral circulation.
- This combined approach enables the expression of collateral development in terms of both flow and resistance.
Implications:
- Provides a method for evaluating the functional significance of collateral coronary arteries.
- Offers insights into the hemodynamic impact of collateralization during ischemic events.
- Demonstrates the practical application of these techniques in patient cases.
Abstract:
Coronary blood flow velocity analysis of the contralateral and of the ipsilateral artery can be used to assess collateral flow during controlled balloon coronary occlusion. Coronary blood flow velocity assessment in combination with measurement of aortic pressure and coronary wedge pressure permits expression of the development of the collateral circulation in terms of flow and resistance. The application of both techniques is illustrated in two patients.