Berman G O, Reichek N, Brownson D, Douglas P S
Cardiovascular Section, Hospital of the University of Pennsylvania, Philadelphia 19104.
Am J Cardiol. 1990 Apr 15;65(15):1026-30. doi: 10.1016/0002-9149(90)91008-t.
The effects of imaging view and sample volume location on tricuspid velocimetry and of heart rate and aging on mitral and tricuspid inflow were evaluated in 41 normal subjects aged 20 to 76 years. Pulsed Doppler recordings were obtained in the parasternal short-axis, right ventricular inflow and apical 4-chamber views at the level of the tricuspid and mitral anuli and 1 cm caudad and 1 cm cephalad to the tricuspid anulus in the 4-chamber apical view. The right ventricular filling pattern was not affected by imaging view. However, placement of the sample volume 1 cm cephalad resulted in a 16% reduction (p less than 0.01) in early velocity with a 9% increase in atrial filling fraction. Conversely, late velocity was 11% higher (p less than 0.05) at the anular level versus the other locations. Right and left ventricular filling velocities were modestly related (r = 0.50 to 0.63). Relations between age and tricuspid late velocity, velocity ratio and atrial filling fraction were weaker (r = 0.34 to 0.47; all p less than 0.05) than those between age and mitral variables (r = 0.59 to 0.74. Also, aging had a greater effect on mitral than tricuspid late velocity (i.e., a steeper slope; p less than 0.01). Tricuspid late velocity and atrial filling fraction were each modestly inversely related to RR interval (r = -0.48, r = -0.54; p less than 0.01). Thus, tricuspid velocity is affected by sample volume location, aging and heart rate, but not imaging view. Sample volume location, heart rate and age should be considered when evaluating right ventricular inflow parameters.
在41名年龄在20至76岁的正常受试者中，评估了成像视图和样本容积位置对三尖瓣测速的影响，以及心率和衰老对二尖瓣和三尖瓣流入的影响。在胸骨旁短轴、右心室流入道和心尖四腔视图中，于三尖瓣和二尖瓣瓣环水平以及心尖四腔视图中三尖瓣瓣环尾侧1 cm和头侧1 cm处获取脉冲多普勒记录。右心室充盈模式不受成像视图影响。然而，样本容积置于头侧1 cm处导致早期速度降低16%（p<0.01），心房充盈分数增加9%。相反，瓣环水平的晚期速度比其他位置高11%（p<0.05）。右心室和左心室充盈速度呈中度相关（r=0.50至0.63）。年龄与三尖瓣晚期速度、速度比值和心房充盈分数之间的关系（r=0.34至0.47；均p<0.05）比年龄与二尖瓣变量之间的关系（r=0.59至0.74）弱。此外，衰老对二尖瓣晚期速度的影响大于三尖瓣（即斜率更陡；p<0.01）。三尖瓣晚期速度和心房充盈分数均与RR间期呈中度负相关（r=-0.48，r=-0.54；p<0.01）。因此，三尖瓣速度受样本容积位置、衰老和心率影响，但不受成像视图影响。在评估右心室流入参数时，应考虑样本容积位置、心率和年龄。
