credentialing committees are the ultimate power-brokers who determine who is allowed to perform certain procedures. If vascular surgery becomes regionalized, and vascular surgeons tell their hospital administrators they no longer perform certain procedures, and those patients then are referred to high-volume hospitals, will cardiologists take up the slack and perform TEVARs, EVARs, and carotid stenting at that hospital if they are allowed to do so? My crystal ball does not provide the answer (but I can make a guess).
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