Defining pulsatile perfusion:: Quantification in terms of energy equivalent pressure

被引:72
作者
Ündar, S
Frazier, OTH
Fraser, CD
机构
[1] Texas Childrens Hosp, Congenital Heart Surg Serv, Houston, TX 77030 USA
[2] Texas Heart Inst, Cullen Cardiovasc Surg Res Labs, Houston, TX 77025 USA
[3] Baylor Coll Med, Dept Surg, Houston, TX 77030 USA
[4] Baylor Coll Med, Dept Pediat, Houston, TX 77030 USA
关键词
pulsatile flow; energy equivalent pressure; cardiopulmonary bypass; membrane oxygenator; aortic cannula; extracorporeal circulation;
D O I
10.1046/j.1525-1594.1999.06409.x
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Several clinical and animal studies have demonstrated that pulsatile perfusion is more beneficial than nonpulsatile perfusion during short or long durations of extracorporeal circulation. Other investigators, however, have been unable to document these benefits. The issue remains controversial. Central to the debate is the issue of a precise definition of pulsatile now. To help resolve the conflict, pulsatile now may be quantified in terms of energy equivalent pressure. This formula contains both the arterial pressure and pump flow rate, which are the 2 most critical parameters for open heart surgery. This definition establishes common criteria for assessment of the effectiveness of extracorporeal support.
引用
收藏
页码:712 / 716
页数:5
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