The association between admission systolic blood pressure and 1-year mortality in patients with non-ST-segment elevation acute coronary syndrome

Background In patients with acute coronary syndrome（ACS）, lower admission systolic blood pressure（SBP）levels infer a worse prognosis. However, the predictive potential of admission SBP on 1-year mortality has not fully elucidated in patients with non-ST-segment elevation ACS（NSTEACS）. Methods We enrolled 1325 patients to investigate the association between admission SBP in patients hospitalized for NSTEACS. We analyzed the association between admission SBP and 1-year mortality. Admission SBP was categorized as low（〈110 mm Hg）, normal（110-140 mm Hg）, high（141-160 mm Hg）, and very high（〉160 mm Hg）. Results Compared with patients with normal admission SBP, those with low SBP had a significantly increased hazard ratios（HRs） for 1-year mortality of 3.03（P〈0.05）, while patients with high and very high admission SBP had no significantly increased HRs for 1-year mortality. Conclusion Low admission SBP, but not elevated admission SBP, is a strong independent predictor of 1-year mortality in patients with NSTEACS.