Key result
Coronary artery bypass grafting resulted in a more than twofold increase in myeloperoxidase levels at 24 hours, and elevated pre-operative levels were associated with a higher risk of postoperative complications (p=0.002).
Why the study?
Postoperative increases in troponin I after heart surgery can be difficult to interpret, motivating the evaluation of myeloperoxidase alongside other markers to assess myocardial damage and complication risk.
Does the level of myeloperoxidase predict postoperative complications and correlate with myocardial injury in patients undergoing coronary artery bypass grafting?
Observational (n=60)
Does the level of myeloperoxidase predict postoperative complications and correlate with myocardial injury in patients undergoing coronary artery bypass grafting?
Answers are grounded in this paper and cite their sources.
Elevated preoperative plasma myeloperoxidase is an additional indicator for assessing the risk of postoperative complications after CABG, independent of C-reactive protein levels.
The study of dynamics of laboratory markers before and after heart surgery makes it possible to predict the risks of postoperative complications. Troponin I is ‘the gold standard’ for diagnosing acute myocardial infarction, but with an increase in the marker after heart surgery, the interpretation of the results can be difficult. Therefore, the search for new combinations of laboratory markers can help in assessing the degree of myocardial damage after surgery, as well as the risk of complications. Myeloperoxidase as a new laboratory indicator is of interest, since there are many studies on the prognostic value of an increase in this marker in patients with coronary heart disease in the development of cardiovascular complications. In the present study, the dynamics of myeloperoxidase, troponin I, and C-reactive protein in patients (n = 60) with a confirmed diagnosis of coronary heart disease before and after elective coronary artery bypass grafting under cardiopulmonary bypass was assessed. The following results were obtained: an increased level of myeloperoxidase in blood plasma in patients before surgery is an additional indicator in assessing the risk of postoperative complications, regardless of the concentration of C-reactive protein. A correlation was found between the concentration of troponin I and the level of myeloperoxidase in the blood, as well as between the duration of cardiopulmonary bypass and the level of MPO 24 hours after surgery.
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T. A. Sheshurina (2022) conducted an observational in Coronary heart disease (n=60). Coronary artery bypass grafting vs. Pre-operative baseline was evaluated on Myeloperoxidase (MPO) concentration 24 hours post-operation (pmol/L). Coronary artery bypass grafting resulted in a more than twofold increase in myeloperoxidase levels at 24 hours, and elevated pre-operative levels were associated with a higher risk of postoperative complications (p=0.002).
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