Related Experiment Videos
Intracoronary demonstration of adenosine-induced coronary collateral steal
C Seiler1, U Kaufmann, B Meier
1University Hospital, Bern, Switzerland.
Insights
A coronary steal phenomenon, where blood flow is diverted away from the heart muscle, was observed. This occurred due to collateral circulation in a reopened artery, significantly reducing blood flow reserve.
Area of Science:
- Cardiovascular medicine
- Interventional cardiology
- Coronary artery disease
Background:
- Coronary artery steal phenomenon is a rare complication.
- It can occur after revascularization procedures.
- Collateral circulation plays a key role in coronary hemodynamics.
Abstract:
A steal phenomenon was detected by intravascular Doppler guidewire in a patient with a well collateralised coronary vascular area supplied by a reopened left circumflex coronary artery. This phenomenon accounted for the fall in blood flow velocity reserve during hyperaemic conditions to 50% of the baseline value. The collaterals must have been the cause of the steal phenomenon because complete revascularisation of the lesion barely reversed it.