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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: BACKGROUND, METHODS, RESULTS. Meshes: Aged, Aged, 80 and over, Coronary Angiography, Female, Follow-Up Studies, Humans, Male, Middle Aged, Myocardial Infarction, Myocardial Revascularization, Patient Admission, Potassium, Prognosis, Retrospective Studies, Risk Factors.
user
Is potassium concentration on admission an independent risk factor for target lesion revascularization in acute myocardial infarction? Context: Acute myocardial infarction (AMI) is accompanied by excessive production of catecholamines, which is characterized by a hypokalemic dip. A polymorphism of the adrenergic receptor has also been reported to be associated with target lesion revascularization (TLR) after coronary intervention. We enrolled 276 consecutive patients with AMI within 24 hours of symptom onset, who underwent emergency coronary intervention using bare metal stents and had examinations over a 5-10-month follow-up period. The patients were divided into tertiles based on their serum potassium level on admission (low K, <3.9; mid K, ≥ 3.9, <4.3; and high K, ≥ 4.3). Sixty-four TLRs were observed in the study. Increased potassium concentration was associated significantly with TLR. Patients in the high K group were about two and a half times more likely to have a TLR after AMI compared to those in the low K group. Multiple logistic analysis showed that potassium level on admission was an independent risk factor for TLR (odds ratio 1.69; confidence interval 1.04 to 2.74; P = 0.036).
assistant
These findings indicated that increased potassium levels on admission might predict TLRs in AMI patients treated with bare metal stents. Final Decision: yes