摘要
目的：应用左房追踪技术探讨健康成人左房参数及其影响因素。方法：选取202例正常健康成年人，其中男99例、女103例。男、女平均年龄分别为（41.5±12.5）岁、（44.9±13.1）岁，运用左房追踪技术（Left atrial tracking，LAT）获得左房：最大上下径（LALmax）、最小上下径（LALmin）、最大周长（LACmax）、最小周长（LACmin）、最大面积（LAAmax）、最小面积（LAAmin）、最大容积（LAVmax）、最小容积（LAVmin）、收缩前容积（LApre）、收缩期充盈速率（dv/dt S）、左房舒张早期排空速率（dv/dt E）、左房舒张晚期排空速率（dv/dt A）参数的正常参考值范围，并用体表面积（BSA）标化，研究其是否受性别、年龄因素影响。结果：男性组与女性组比较，左房各参数均值差异无统计学意义（P＞0.05）。左房各参数在不同年龄组之间差异具有统计学意义（P<0.05），各参数随年龄的增长而增加。结论：左房追踪技术测得正常人左房各参数随着年龄的增长而增大，但与性别无关，作为新技术在探讨正常人左房构型及功能方面具有一定的可行性。
Abstract
Objective: To investigate left atrial parameters and its effective factors by left atrial tracking in healthy adults. Methods: 202 randomly elected nornmal healthy adults underwent echocardiography, 99 were male with mean age (41.5±12.5) years old, 102 were female with mean age (44.9±13.1) years old. The left atrial endocardial surface was traced by left atrial tracking(LA Tracking), to obtained long-axis length-time curve of left atrium, circumference-time curve, area-time curve, volume-time curve, volume change rate curves of left atrium. Then measure maximum long-axis length of left atrium(LALmax), minimum long-axis length(LALmin), maximum circumference(LACmax), minimum circumference(LACmin), maximum area(LAAmax), minimum area(LAAmin), maximum volume(LAVmax), minimum volume(LAVmin), pre-systolic volume(LAVp), systolic illing rate(dv/dt S), early diastolic emptying rate(dv/dt E), emptying peak fraction at late left ventricular diastolic(dv/dtA), normal value ranges were drew from the above parameters, and then research the above mentioned parameters, which standardized by body surface area(BSA), whether affected with gender and age. Results: The differences of left atrial parameters between male group and female group had no significance statistically(P>0.05). All parameters in each age groups were significant statistically(P<0.05), and these parameters increased with age. Conclusion: The parameters of normal left atrium increase with age by left atrial tracking, but not with gender. LA Tracking, as a new technology, has certain feasibility on left atrial normal configuration and function.Atrial function, left; Ultrasonography, Doppler, color
关键词
心房功能 /
左 /
超声检查 /
多普勒 /
彩色
齐锦蔚;高 林.
应用左房追踪技术探讨正常成人左房参数及影响因素[J]. 中国临床医学影像杂志. 2014, 25(7): 469-472
QI Jin-wei;GAO Lin.
Study of left atrial tracking technique in the assessment of the parameters andeffective factors of left atrium in healthy adults[J]. Journal of China Clinic Medical Imaging. 2014, 25(7): 469-472
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