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     The C,A,and C waves which appeared clearly in impedance cardiography paralleled and responded the P,QRS and T waves in ECG.
     其心阻抗微分图的A、C、O波明显,且均与心电图(ECG)的P波、QRS波、T波在时间上相对应。
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     Clinical Application of liver Impedence Differential Graphical
     肝阻抗微分图的临床应用
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     The hemodynamics of 30 patients of stable 30 pa-tients of unstablc latent keshan disease and 50 healthypersons were observed with comparison bytransthoracic differential admittance plethysmograph.
     用心导纳微分图对比观察了稳定的和不稳定的潜在型克山病患者各30例及50例健康人。
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     This paper reported the changes of transthoracic differential impedanceplethysmograph in 100 cases with children's Keshan disease in cmparisonwith 100 healthy children.
     本文报告了100例克山病患儿和100例健康儿童的心阻抗微分图的所见。
短句来源
     This paper roports the changes of tr- ansthoracic differential admittance pleth- ysmogrsph in 75 healthy children and 75 children with Keshan disease.
     本文报道了75例健康儿童和75例克山病患儿心导纳微分图的改变。
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     N(Z).
     N(Z)的和.
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     The S. C.
     C.
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     Investigation of reconstructed impedance differential cardiogram
     重建心阻抗微分的探讨
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     Clinical Application of liver Impedence Differential Graphical
     肝阻抗微分的临床应用
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     The Pattern of Differential
     微分模式
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With the aid of right heart micro-catheterization technique ECG and pulmonary artery pressure curves were recorded synchronously in 100 cases of COPD patients and 15 normal subjects. RPEP/RVET ratio was measured from these tracings.These data demonstrated a good correlation between PAP and RPEP/ RVET ratio (correlation coefficient r = 0.78).Accor-ding to these data, we suggest:(1)In COPD patients, RPEP/RVET>0.45 can be used as a diagnostic criterion of cor pulmonale; (2) RPEP/RVET> 0.42 may indicate impairment...

With the aid of right heart micro-catheterization technique ECG and pulmonary artery pressure curves were recorded synchronously in 100 cases of COPD patients and 15 normal subjects. RPEP/RVET ratio was measured from these tracings.These data demonstrated a good correlation between PAP and RPEP/ RVET ratio (correlation coefficient r = 0.78).Accor-ding to these data, we suggest:(1)In COPD patients, RPEP/RVET>0.45 can be used as a diagnostic criterion of cor pulmonale; (2) RPEP/RVET> 0.42 may indicate impairment of the right ventricular function; (3) In COPD patients, if RPEP/RVET> 0.42 but<0.45, cor pulmonale may be suspected.In order to correlate the impedance pneumogram (IPG) and its first derivation with hemodynamic events within the right heart,a polygraph machine was used in 32 cases of COPD and 8 cases of other heart diseases.In addition, the right ventricle apexcar-diogram had simultaneously been recorded in 4 patients. From these findings, we conclude: (1) The tracing of IPG and its first derivation should be divided into four phases: (a) Auricular phase (a or A wave); (b)lsovolemic contraction phase of right ventricle (IC wave);(c)Ejection phase of right ventricle-(S or C wave); (d) Diastolic phase, (D or O wave).-(2) Measuring of RPEP and RVET can be achieved from the tracings of the first derivation of IR-G by a new method presented here. The RPEP/RVET ratio thus measured coincided exactly with that measured directly with the invasive method. It may be used as a noninvasive method for detecting right ventricular dysfunction and cor pulmonale in COPD patients. (3) The C-P2 interval may probably be valuable in the diagnosis of pulmonary hypertension.

本文对100例COPD病人与15例正常人经微导管同步记录心电图及肺动脉压力曲线,测量RPEP/RVET比值,通过肺动脉平均压与RPEP/RVET比值对比,提出了RPEP/RVET比值>0.42为右心室受损,此比值在0.42~0.45为可疑肺心病,>0.45为肺心病的诊断标准。通过同步记录EKG、PCG、右心各腔室压力曲线、肺阻抗图及其微分图及右心室心尖搏动图,提出肺阻抗图及其微分图应分为4个时相,即房波、右心室等容收缩波、右心室射血波及舒张波。提出了在肺阻抗微分图中右心室射血点及射血终止点的定点,及测量RPEP/RVET比值的方法,用以评定右心室功能及诊断慢性肺心病。并认为C波峰-P_2音间期可能对肺动脉高压有诊断价值。

The parameters of cardiac pumping function—stroke volume(SV),cardiacoutput(CO),cardiac index(CI),left ventricular work index(LVWI),aortic arterycompliance(AC)and total peripheral resistance(TPR)were determined in 190 normalsubjects and 70 patients with coronary heart disease by means of the thoracicimpedance cardiogram.The results showed that there were significant differencesin all the parameters between<40 age and≥40 age groups of normal subjects,but there were no sex difference.And the SV,CI,AC and TPR were...

The parameters of cardiac pumping function—stroke volume(SV),cardiacoutput(CO),cardiac index(CI),left ventricular work index(LVWI),aortic arterycompliance(AC)and total peripheral resistance(TPR)were determined in 190 normalsubjects and 70 patients with coronary heart disease by means of the thoracicimpedance cardiogram.The results showed that there were significant differencesin all the parameters between<40 age and≥40 age groups of normal subjects,but there were no sex difference.And the SV,CI,AC and TPR were found tobe lower in coronary heart disease patients as compared to the normal subjectsof the same age group.

本文报道用胸腔阻抗微分图测定190名正常人泵功能各项指标及其上下限,并与70名冠心病人做了比较。结果发现,各项指标有明显年龄差异,无性别差异;而冠心病者每搏量,心脏指数,主动脉顺应性均较同年龄组正常人为低,而总外周阻力较同年龄组正常人为高。

Rice seedling were planted over soil with 50,100 and 400ppm of Cu, added in the form of CuSO4, respectively. The characteristics of spectral reflection of the leaves of these plants, which grew in Cu-treated soil, were obviously under regular change. In the visible region of spectrum, reflectance increases, while in the region of near infrared, reflectance decreases. The differential curve of spectral reflectance assumes a hypsochromic shift. At the tillering stage of the treated plant, changes of spectral reflection...

Rice seedling were planted over soil with 50,100 and 400ppm of Cu, added in the form of CuSO4, respectively. The characteristics of spectral reflection of the leaves of these plants, which grew in Cu-treated soil, were obviously under regular change. In the visible region of spectrum, reflectance increases, while in the region of near infrared, reflectance decreases. The differential curve of spectral reflectance assumes a hypsochromic shift. At the tillering stage of the treated plant, changes of spectral reflection appear especially remarkable. Results show that some of the spectral bands can be used to distinguish spectral reflection of normal rice plants from Cu-poisoning ones.

水稻移栽于添加不同量铜(分别为50、100、400ppm)的土壤上,叶片光谱反射特性发生规律性变化。在可见光部分反射率提高;在近红外部分反射率下降;在光谱反射率曲线的微分图上显示出蓝移。这些变化在分蘖期最为显著。从几个波段可以看出,正常的与铜毒害的水稻的光谱反射特性有较大差异。

 
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