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本文报道375例6月～13岁(男193例、女182例)左室STI测值(包括QS_2、LVET、PEP和PEP/LVET),并进行分析研究。各项测值无性别差异(P<0.01),按有聚样品聚类分析将全组分0～1、2～3、4～6、7～9和10～13岁5个年龄组。通过简单相关系数和逐步回归分析肯定心率、体表面积和年龄对各时相的影响。由于我们认为体表面积比年龄更能确切地反映机体生长发育过程对心血管功能动态变化和成熟程度的影响,又因体表面积和年龄二因素密切相关(r=0.95,P<0.01),故选用心率(x_1)和体表面积(x_2)与STI各时相重建回归方程。
This article reports the left ventricular STI measurements (including QS_2, LVET, PEP and PEP / LVET) in 375 cases from June to 13 years (193 males and 182 females), and analyzed. There was no significant difference between the two groups (P <0.01). According to the clustering analysis of polygamy samples, all the patients were divided into 5 age groups of 0 ~ 1, 2 ~ 3, 4 ~ 6, 7 ~ 9 and 10 ~ 13 years old. Through simple correlation coefficient and stepwise regression analysis affirmed the impact of heart rate, body surface area and age on each phase. Because we think body surface area more accurately reflects the influence of body growth and development on the dynamic changes and maturation of cardiovascular function than age, and because body surface area and age are closely related (r = 0.95, P <0.01), we choose Heart rate (x_1) and body surface area (x_2) reconstructed regression equations with STI phases.