后负荷

PPV对心源性肺水肿的患者十分有益，因它可减少前负荷和后负荷。

PPV is very helpful in patients with cardiogenic pulmonary edema , as it helps to reduce preload and afterload .

增加前、后负荷对右心室心肌收缩性指标的影响

Effect of increasing preload and afterload on the myocardial contractility indices of right ventricle

结果：减小左室后负荷，可使St法测定的心室不应期延长（P＜0.05，P＜0.01）；

RESULTS : Reducing left ventricular afterload pro - longed ventricular refractory period measured by St method ( P 0.05 , P 0.01 ) .

结果提示：心肌MAP改变的机理是由于Pt直接作用于全身血管平滑肌使之收缩，外周阻力增加，心室的后负荷增大，心输出量减少和冠状动脉收缩血流阻力增加所致的全心性缺血。

It is suggest that the change in MAP is resulted from the myocardial ischemia for coronary vasoconstriction produced by pituitrin .

结论LVMI轻度增加时，心肌收缩功能是后负荷依赖性的；

Conclusion LV systolic function was afterload dependent in patients with mild LVMI increase .

同时，负性作用与后负荷变化又可导致△SL幅度改变。

The amplitude of the phasic segmental length (△ SL ) was reduced by negative agent and increased by the change of afterload .

结论：对幼年Wistar大鼠升主动脉缩窄，可制作理想后负荷心衰模型，该模型对研究心衰机理有重要意义。

There was very high occurence of aneurysm in this model . Conclusions : By banding Ascending aorta of young Wistar rat , A stable reproducible ideal afterload heart failure model was induced .

结论介入综合治疗急性PTE能够快速改善血液动力学，降低右心室后负荷，预防PTE复发。

Conclusion To cure the acute PTE with interventional comprehensive treatment can improve the hemodynamics quickly , decrease the afterload of right ventricle and prevent the recurrence of PTE.

而维拉帕米除可提高VFT外（P<001），对后负荷增加引起RRP、ERP和MAPD90的缩短没有明显影响（P>005）。

In contrast , verapamil had no effects on the afterload-related changes of RRP , ERP and MAPD_ 90 ( P > 0.05 ) except increasing of VFT ( P < 0.01 ) .

结论老年COPD伴肺动脉高压患者右心后负荷的增加可能是引起血浆心钠素浓度增高的主要因素，而缺氧及二氧化碳潴留亦可能通过直接或间接机制影响血浆心钠素的分泌。

Conclusions in aged COPD patients with PAH , the increase of right heart afterload may be the leading factor that influences the secretion of the ANP and hypoxia and carbon dioxide retention could also influence the secretion of ANP through direct or indirect machanism .

方法：结扎大鼠腹主动脉使之外径缩窄至0.6mm，导致心脏后负荷增高，形成心肌肥厚。

Methods : Pressure overload cardiac hypertrophy was induced by abdominal aorta constriction ( banding ) in rats .

背景：近30年来，IABP降低左心室后负荷、减少心肌耗氧量以及增加冠状动脉灌注压的作用已得到实验及临床的广泛证实。

Background : Following its introduction , intra-aortic balloon pump ( IABP ) is certificated that depress volume load , decrease myocardial oxygen consume and increase perfusion pressure of coronary artery with many clinical and experimental trials in recently 30 years .

结论BiPAP能更迅速、有效地缓解老年ACPE患者临床症状与体征，改善气体交换，降低心脏后负荷，减少住院期气管插管率、肺部感染并发率及病死率，可作为老年ACPE患者的首选治疗。

Conclusions BiPAP could rapidly and effectively relax clinical symptoms and signs , improve gas exchanges , decrease cardiac overloads , intubation , lung infection and mortality rate , which could be of choice of treatment of the aged ACPE patients .

结果在在体兔心脏模型，增加左室后负荷，VRRP、VERP、VFT较夹闭前明显降低（P<0.05或P<0.01），但RRPd、ERPd较夹闭前明显升高（P<0.05或P<0.01）；

Results In vivo rabbit heart , by increasing left ventricular afterload , VRRP 、 VERP and VFT were significantly decreased than pro-occlusion ( P < 0.05 or 0.01 ), but refractory period dispersion was significantly increased than that ( P < 0.05 or 0.01 );

后负荷对心室压力-容积关系的影响

The effect of afterload on the ventricular pressure - volume relationship

无创法测定正常儿童左室后负荷及其收缩功能的研究

Noninvasive determination of left ventricular afterload and contractility in normal children

心室的后负荷、泵功能及与动脉的耦合

The ventricular afterload , pump function and ventricle arterial coupling

压力后负荷增高大鼠心肌肥厚向心力衰竭的转变

Transition from Hypertrophy to Heart Failure in Rats with Pressure - Overload

结论米力农可显著增加心脏指数，降低前、后负荷。

Conclusion Milrinone can effectively improve cardiac index , decrease preload and afterload .

左心室后负荷模型的网络实现

Network realization of a model for left ventricular afterload

肺动脉压升高亦可引起右室后负荷增加。

Pulmonary arterial hypertension could further increase the afterload of the right ventricle .

后负荷对左室射血力的影响

Influence of afterload on left ventricular ejection force

大鼠慢性压力后负荷心肌肥厚&心力衰竭模型的建立

Left Ventricular Hypertrophy to Heart Failure in Gradually Pressure Afterload Heart of Wistar Rat

循环系统模拟中的后负荷选择

Determination of afterload in simulation blood circulation system

后负荷变化影响舒张早期及心房收缩期左室充盈。

Variation of afterload influenced not only early , but also late diastolic filling parameters .

右心后负荷正常及增加时结扎右冠状动脉对心脏血流动力学的影响

Effect of ligaturing right coronary artery on hemodynamics under normal and increasing right ventricular afterload

避震器（后负荷水平调整）

Shock absorbers ( rear load leveling )

后负荷增大引起的心肌肥厚过程中细胞凋亡的变化规律

Apoptosis in Pressure Overload-Induced Heart Hypertrophy

链霉素可有效抑制后负荷增加引起的心脏电生理变化；

Streptomycin inhibited these changes of heart electrophysiological parameters caused by elevation of left ventricular afterload .

目的探讨离心泵后负荷压力对血液破坏的影响。

Objective To investigate the effect of afterload pressure on hemolytic blood damage in centrifugal pump .