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目的:研究拔牙手术刺激对心血管疾病患者心脏功能的影响,方法:临床确诊的冠心病患者为试验Ⅰ组;临床确诊为高血压合并冠心病的患者为试验Ⅱ组;无心血管疾病的健康拔牙者为对照组.全部患者均在麻药注射前及术中做左心室收缩时间间期（systolictimeinterval,STI）检测，并经统计学处理．结果：试验Ⅰ组与对照组相比各项指标均有显著差异（P＜0．01），试验Ⅱ组与对照组相比,参考意义最大的PEP／LVET值相差显著.结论:①在相同的刺激下心血管疾病患者与正常人相比,心脏应激性差,心功指数变化幅度大;②STI作为拔牙手术中心功监测手段比较直观、客观，值得推广
Objective: To study the effect of extraction surgery on cardiac function in patients with cardiovascular disease.Methods: The patients with clinically diagnosed CHD were in trial Ⅰ, the patients with clinically diagnosed hypertension with CHD were in trial Ⅱ, and the healthy tooth without cardiovascular disease As control group.All patients underwent systolic time interval (systolic timeinterval, STI) before and during anesthesia injection and were statistically analyzed. Results: Compared with the control group, there were significant differences in each index (P <0.01), and the PEP / LVET values of the reference group with the greatest reference value in the experimental group Ⅱ were significantly different.Conclusion: ①In the same Of patients with cardiovascular disease compared with normal, the heart stress is poor, heart rate index changes in a wide range; ② STI extraction as the center of the technique of tooth extraction is more intuitive, objective and worth promoting