摘要
目的探讨高原老年人QT间期离散度(QTd)正常参考值。方法选择海拔3000~3300m高原居住的老年人120例,常规记录3导同步12导联心电图,测定QT离散度(QTd)、校正的QT离散度(QTcd)、JT离散度(JTd)、校正的JT离散度(JTcd)4项参数,对不同年龄组、不同性别组与同海拔非老年组进行比较,判定其统计学意义。结果(1)高原老年人QTd、JTd均值分别为(49±9)及(51±10)ms;(2)高原人进入老年阶段后QTd各参数随增龄呈递增趋势,然其进程相对缓慢,仅60~64与80~84岁组间差异有极显著性(P<0.01);(3)不同性别间差异无显著性。结论高原老年人QTd、QTcd、JTd、JTcd上限值分别为64、67、70、72ms,较同海拔非老年人显著延长。建议以≤上述各值作为高原老年人的正常参考值。
Objective To find the normal value of QT dispersion of old people in plateau. Methods One hundred and twenty cases of the elderly from altitude of 3 000 3 300 meters were chosen and their QT dispersion (QTd), corrected QT dispersion (QTcd), JT dispersion (JTd) and corrected JT dispersion (JTcd) were determined. Results The average value of QTcd and JTd of old people in plateau is (49±9) and (51±10) ms. All the parameters increased with aging, but the rise is rather slow. The difference between 60 64 and 80 84 age groups was marked ( P <0.01), and that between sexes was not marked. Conclusions Normal upper limit values of QTd, QTcd, JTd, JTcd of old people in plateau are 64, 67, 70, 72 ms. They are higher than those of younger people in the area of same altitude.
出处
《中华老年医学杂志》
CAS
CSCD
北大核心
1999年第4期212-213,共2页
Chinese Journal of Geriatrics