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- Transmitral flow velocities during early diastole(E) and atrial contraction(A) were also measured by Doppler echocardiography and E/A ratio, E/Ve ratio were calculated. 应用彩色多普勒超声心动图测量二尖瓣口舒张期血流快速充盈速度E峰,左房收缩充盈速度A峰,计算E/A值和E与平均Ve的比值(E/Ve)。
- The blood flow velocity of mitral during early diastole（E）and atrial contraction（A）were also measured by pulsed Doppler echocardiography and E/A ration was calculated. 结果正常组舒张早期峰值速度（E）>左房收缩期峰值速度（A），E/A>1;
- Methods Thirty healthy subjects were enrolled in the study. Longitudinal SR of LV walls and RV wall during systole,early diastole and atrium contraction(SRs,SRe and SRa) and largest strain(Smax) were measured. 方法测量30例正常中老年人各室壁、各节段收缩期、舒张早期和房缩期纵向应变率(SRs、SRe、SRa)及最大应变(Smax)。
- METHODS: The measurement parameters included: peak velocities at rapid filling (VE) and atrial contraction (VA), the ratio E/A, deceleration rate of early diastolic rapid inflow (EDC) and E-F slope of mitral valve forelobe curve (EFV). 方法：以舒张早期快速充盈血流速度（VE）、舒张晚期心房收缩血流速度（VA）、二者比值（E/A）、舒张早期快速充盈减速度（EDC）及二尖瓣前叶EF斜率（EFV）为测量参数。
- Methods 85 patients suspect coronary heart disease, with echocardiography, the peak flow velocities during early diastole (E), atrial contraction (A), E/A ratio were recorded and calculated. 方法85例临床疑诊冠心病超声检查左心室二尖瓣口舒张早、晚期血流充盈速度E、A两峰峰值,计算E/A比值,其结果分为舒张功能正常和降低两组。
- Mitral inflow velocity, left atrium contraction inflow velocity in early diastole and their ratio were detected by Doppler flow imaging.Difference of the index of the two groups was compared. 并用二尖瓣血流多普勒法检测舒张期早期血流速度峰值、左心房收缩期血流速度峰值及二者比值，比较两组间所测指标的差异。
- TDI paraments included peak early diastolic annular velocity (E),peak diastolic annular velocity with atrial contraction(A),and isovolumic relaxation time (IR)intervals,calculating the ratio of E/A. 然后应用组织多普勒技术测定E波（舒张早期三尖瓣环运动峰值速度）、A波（舒张晚期三尖瓣环运动峰值速度）和IR（等容舒张时间），并计算E/A比值。
- dropped premature atrial contraction 脱落的房性过早收缩
- The atrium contracts (atrial systole).The tricuspid valve located between the right atrium and ventricle opens for a short time and then shuts. 接下来右心房收缩（心房收缩期），这是位于右心房与右心室之间的三尖瓣会短时间打开然后闭合。
- At the end of diastole, your heart’s atria contract (an event called atrial systole) and pump blood into the ventricles. 当舒张期结束时，心房收缩（称为“心房收缩期”）将血液压入心室。
- At the end of diastole, your heart’s atria contract (atrial systole), pumping blood into the ventricles, and then begin to relax. 舒张期一结束，心房就首先开始收缩（心房收缩期）将血液压入心室，然后开始放松。
- The coupling interval of premature atrial contraction 房早联律间期
- "I'll" is a contraction of "I will". “I'll”是“I will”的缩写。
- A syndicate of local businessmen is bidding for the contract. 一个当地企业家的联合组织在向这一合同投标。
- It is impossible for him to get off the contract. 他不可能解除契约对自己的束缚。
- I'm under contract to teach here for one year. 我按照聘约要在这里教一年书。
- Their acceptance of the contract is still in doubt. 他们是否接受那合同还说不准。
- A penalty clause was written into the contract. 在合同中写入了一项罚款条款。
- It's clearly a breach of contract. 这显然是违反了合同。
- I am under contract so I must finish the job. 我有合同在先，所以必须完成这项工作。
