Even presumably well-collateralized CTOs without prior MI show functional limitations during stress, suggesting a potential benefit from revascularization.
Limited collateral function during stress supports considering revascularization in CTOs without prior MI; extends evidence on functional limitations despite apparent collaterals.
A limited increase in collateral flow and the high prevalence of coronary steal during stress underscore the functional limitation of collaterals in CTOs without prior Q-wave MI. Even presumably 'well-collateralized' CTOs may benefit from a revascularization.
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Werner et al. (2006) studied this question.
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