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Abstract Objective To investigate the association of QRS wave width (QRSw) with in- hospital major adverse cardiac events(MACE) of elder patients with non- ST segment elevation acute coronary syndrome(NSTE- ACS). Methods 137 elder patients with NSTE- ACS were divided into QRSw≤100 ms group (group A, n=95)and QRSw>100 ms group (group B, n=42)based on ECG recorded at admission. Logistic regression analysis was performed for the relationship between QRSw and MACE. Results Serum cTnI, CK- MB, hs- CRP and BNP levels were significantly higher and LVEF significantly lower in group B than in group A (all P<0.05). QRS was significantly wider, serum cTnI, CK- MB, hs- CRP and BNP levels were significantly higher in 31 patients with MACE than in106 patients without MACE (al P<0.05). Logistic regression analysis showed that the increase of QRSw was an independent risk factor of in- hospital MACE in elder patients with NSTE- ACS (OR=1.213, 95%CI:1.103~1.435, P<0.05). Conclusion The risk of in- hospital MACE increases in elder patients with NSTE- ACS and wide QRS.
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