Fig. 2

Primary and secondary endpoints. (A) The incidence of myocardial injury (primary endpoint) was significantly lower in the low-temperature RA-flush solution group than in the room-temperature RA-flush solution group. (B) The incidence of RA-related MI (secondary endpoint) based on the SCAI criteria or the 4th UDMI criteria was not significantly different between the two groups. CK-MB creatine kinase isoenzyme, cTnI cardiac troponin I, MI myocardial infarction, RA rotational atherectomy, SCAI Society for Cardiovascular Angiography and Interventions, UDMI universal definition of myocardial infarction, URL upper reference limit.