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目的:研究休克指数(SI,即心率与收缩压的比值)对不稳定型心绞痛(UA)患者的预后预测价值。方法:回顾性我院经冠状动脉造影确诊为UA的386例住院患者,依SI将患者分为2组:SI≥0.7组(178例)和SI<0.7组(208例)。比较2组住院期间心源性休克与病死率之间是否存在统计学差异。结果:2组之间一般资料比较差异无统计学意义。与SI<0.7组比较,SI≥0.7组射血分数(EF)值较低(P<0.05);SI≥0.7组入院时发作心源性休克比例高于SI<0.7组(P<0.05),入院后亦高于SI<0.7组,但2组比较差异无统计学意义(P>0.05)。SI≥0.7组住院期间总病死率明显高于SI<0.7组(P<0.05)。结论:SI的升高可以预测UA患者的住院病死率。
Objective: To study the prognostic value of the shock index (SI, ratio of heart rate to systolic pressure) in patients with unstable angina (UA). Methods: A total of 386 hospitalized patients with UA confirmed by coronary angiography were retrospectively divided into two groups according to SI: SI≥0.7 (178 cases) and SI <0.7 (208 cases). To compare whether there was a significant difference between the two groups during cardiogenic shock and case fatality rate. Results: There was no significant difference in general information between the two groups. Compared with SI group, the ejection fraction (EF) was lower in SI≥0.7 group (P <0.05), and the incidence of cardiogenic shock in SI≥0.7 group was higher than that in SI group (P <0.05) After admission, SI group was also higher than 0.7, but there was no significant difference between the two groups (P> 0.05). The total case fatality rate of SI≥0.7 group was significantly higher than that of SI group (P <0.05). CONCLUSIONS: Elevated SI can predict in-hospital mortality in UA patients.