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  • Title: The impact of CK-MB elevation in patients with acute type A aortic dissection with coronary artery involvement.
    Author: Minamidate N, Takashima N, Suzuki T.
    Journal: J Cardiothorac Surg; 2022 Jul 06; 17(1):169. PubMed ID: 35794624.
    Abstract:
    BACKGROUND: Acute type A aortic dissection (ATAAD) is a fatal disease and requires emergency surgery. In particular, it is known that mortality is high when a coronary artery is involved. However, the degree of myocardial damage of the coronary acute artery involvement (ACI) varies and may or may not increase creatine kinase muscle and brain isoenzyme (CK-MB). It is unknown how CK-MB elevation affects the surgical outcome. This study compared the surgical results between the two groups of ACI with or without CK-MB elevation. METHODS: Among 348 patients who underwent an emergency operation for acute type A aortic dissection, there were 28 (8.0%) patients complicated by ACI and underwent additional coronary artery bypass grafting. We divided 26 of those patients into two groups; the MI group ( with CK-MB elevation) and the NMI group (without CK-MB elevation), and compared both groups. RESULTS: Of the 26, sixteen were in the MI group, and ten were in the NMI group. The average CK-MB in the MI group was 225.5 IU/L, and that in the NMI group was 13.5 IU/L. The mean time from onset to surgery was 248 min in the MI group and 250 min in the NMI group. There was statistical significance in mortality ( 69% vs. 13%, p = 0.03). There was no significance in major complications (ICU days, reintubation, reoperation, pneumonia, sepsis). CONCLUSIONS: Acute coronary artery involvement was associated with 8.0% of patients with ATAAD, and 62% had myocardial ischemia with CK-MB elevation. The MI group had significantly higher mortality than the NMI group. It is crucial for cases with suspected ACI to obtain coronary perfusion as soon as possible to prevent CK-MB from elevating.
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