ABSTRACT
OBJECTIVE:To investigate the effects of loading-dose rosuvastain before early percutaneous coronary intervention (PCI) on reperfusion arrhythmias in patients with acute non-ST-segment elevation myocardial infarction (NSTEMI).METHODS:A total of 136 patients with NSTEMI were randomly divided into loading-dose group (68 cases) and control group (68 cases).Both groups who were not given anti-platelet drugs were given loading-dose of Aspirin enteric-coated tablets 300 mg+Clopidogrel sulfate tablets 600 mg immediately after admission.The patients who were given aspirin regularly were given loading-dose of Clopidogrel sulfate tablets 600 mg only once after admission.The patients who were given clopidogrel regularly were given loading-dose of Aspirin enteric-coated tablets 300 mg only once.Those received PCI 12-24 h after medication.After PCI,they took Aspirin enteric-coated tablets 100 mg for life+Clopidogrel bisulfate tablets 75 mg at least 12 months.Loading-dose group was given loading-dose of Rosuvastatin calcium tablets 20 mg orally,12 h before surgery.All patients began to take Rosuvastatin calcium tablets 10 mg,once a day,since the night after the operation.Coronary angiography and the occurrence of reperfusion arrhythmia were observed in 2 groups.The levels of CK-MB and cTnT,major adverse cardiovascular events (MACE) were observed before and after surgery.RESULTS:There was no statistical significance in the number of diseased vessels,culprit vessels,the degree of culprit vessels stenosis or the incidence of MACE between 2 groups (P＞ 0.05).The incidence of reperfusion arrhythmia in loading-dose group was significantly lower than control group,with statistical significance (P＜0.01).There was no statistical significance in the degree of culprit vessels stenosis between 2 groups (P＞0.05).Before surgery,there was no statistical significance in the levels of CK-MB or cTnT between 2 groups (P＞0.05).After surgery,the levels of CK-MB and cTnT in 2 groups were significantly higher than before surgery,but the loading-dose group was significantly lower than the control group,with statistical significance (P＜0.01).CONCLUSIONS:Preoperative loading-dose of rosuvastatin before PCI can reduce the incidence of reperfusion arrhythmias in NSTEMI patients.