The effect of diet on echocardiographic left ventricular dimensions in normal man.
The effect of diet on echocardiographic left ventricular dimensions in normal man.
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饮食对正常人超声心动图左心室尺寸的影响。
DOI：
10.1093/ajcn/32.12.2410
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
E. T. Palmer
中科院分区：
文献类型：
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作者：
J. Sullivan;T. Ratts;A. A. Schoeneberger;J. Samaha;E. T. Palmer
在正常受试者中研究了膳食钠和钾对超声心动图左心室尺寸的影响。在 10 名受试者中，Zoo mEq 钠饮食组的左心室舒张末期容积比 1Omeq 钠饮食组高 18.8%，收缩期容积高 17.1%（P 小于 0.025）。当接受随意饮食时，受试者的舒张末期容积为 107.9 +/- 6.4 ml SE，收缩末期容积为 45.2 +/- 2.7 ml SE。在钠消耗期间，值分别下降至 101.3 +/- 5.7 ml SE 和 38.6 +/- 2.9 ml SE，然后在高钠饮食中分别升至 120.3 +/- 7.0 ml SE 和 45.2 +/- 2.7 ml SE。补充钠期间心率下降了4.2%（P小于0.05），而平均动脉血压、心输出量和外周血管阻力没有显着变化。相比之下，七名受试者的饮食中含有 25 和 200 mEq 钾，钠摄入量保持恒定，但心脏尺寸、心率、血压、心输出量或血管阻力没有表现出显着变化。结论是，膳食钠显着影响正常左心室的大小，在解释单次或连续超声心动图时必须考虑这种影响。
The effect of dietary sodium and potassium on echocardiographic left ventricular dimensions was studied in normal subjects. In 10 subjects, left ventricular end diastolic volume was found to be 18.8 greater, and systolic volume 17.1% higher with zoo mEq sodium diet than on a 1Omeq sodium diet (P less than 0.025). While receiving an ad libitum diet, the subjects were found to have an end diastolic volume of 107.9 +/- 6.4 ml SE and an end systolic volume of 45.2 +/- 2.7 ml SE. During sodium depletion, values fell to 101.3 +/- 5.7 ml SE and 38.6 +/- 2.9 ml SE, respectively, then on a high sodium diet rose to 120.3 +/- 7.0 ml SE and 45.2 +/- 2.7 ml SE, respectively. Heart rate fell during sodium repletion by 4.2% (P less than 0.05) while mean arterial blood pressure, cardiac output and peripheral vascular resistance did not change significantly. In contrast, seven subjects consuming a diet containing 25 and 200 mEq potassium in seqeucne, the sodium intake remaining constant, did not display significant changes in cardiac dimension, heart rate, blood pressure, cardiac output, or vascular resistance. It is concluded that dietary sodium significantly effects the size of a nonfailing left ventricle, an effect that must be considered when single or sequential echocardiograms are interpreted.