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Comparison of the change in index of microcirculatory resistance (IMR) at each stage of the primary percutaneous coronary intervention (PPCI) for balloon angioplasty (and stent; balloon angioplasty (BA)) and manual thrombectomy (and direct stent; manual thrombectomy (MT)) for the whole group (A) and (B) restricted to individuals with a baseline IMR <32 (values mean and SEM).
