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Figure 3: (a) Blood troponin I, (b) Blood creatinine kinase-MB. ICU admission: Reading at ICU admission; 6th h: 6th h after ICU admission; 12th h: 12th postoperative hour; 24th h: 24th postoperative hour; 48th h: 48th postoperative hour; 72nd h: 72nd postoperative hour. Group M: Magnesium sulfate group, Group C: Control group. ICU: Intensive Care Unit

Figure 3: (a) Blood troponin I, (b) Blood creatinine kinase-MB. ICU admission: Reading at ICU admission; 6<sup>th</sup> h: 6<sup>th</sup> h after ICU admission; 12<sup>th</sup> h: 12<sup>th</sup> postoperative hour; 24<sup>th</sup> h: 24<sup>th</sup> postoperative hour; 48<sup>th</sup> h: 48<sup>th</sup> postoperative hour; 72<sup>nd</sup> h: 72<sup>nd</sup> postoperative hour. Group M: Magnesium sulfate group, Group C: Control group. ICU: Intensive Care Unit