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| Clinical analysis of fragmented QRS complex in non-ST segment elevation acute coronary syndrome patients |
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Abstract Objective To explore the relationship between fragmented QRS complex(fQRS) and the risk stratification and short-term prognosis of non-ST segment elevation acute coronary syndrome(NSTE-ACS) patients. MethodsOne hundred and sixty NSTE-ACS patients were randomly selected, including 72 high-risk cases, and 88 non-high-risk(moderateand low-risk) cases. Between high-risk and non-high-risk NSTE-ACS patients, the incidence of fQRS was compared. Between fQRS group and non-fQRS group, the incidence of cardiac events of NSTE-ACS patients in hospital was made comparative analysis. ResultsThe incidence of fQRS among high-risk NSTE-ACS patients(20 case, 27.78%) was higher than that of non-high-risk NSTE-ACS patients(12 case, 13.63%), with statistically significant difference(P<0.05). Among patients with fQRS, the incidences of ventricular arrhythmias, heart failure(LVEF≤40%), cardiogenic shock, and cardiac death were 68.75%, 43.75%, 18.75%, and 12.5%, respectively while the incidences of the above cardiac events were separately 45.31%, 21.88%, 5.47%, and 1.56% in nonfQRS group. And the differences between the two groups were all statistically significant(P<0.05). ConclusionThe incidence of fQRS among high-risk NSTE-ACS patients was higher, and among NSTE-ACS patients with fQRS, the incidence of cardiac events in hospital was higher, too. Therefore, fQRS may serve as a new index for predicting short-term prognosis of NSTE-ACS and screening patients with a high risk of NSTE-ACS.
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2014, Vol. 23 
