Department of Anesthesiology and Critical Care Medicine, Hospital Lariboisière 75475, Paris, France.
Cardiol Res Pract. 2012;2012:370697. doi: 10.1155/2012/370697. Epub 2011 Sep 21.
Hemodynamic monitoring has become a real challenge in the intensive care unit. As an integrative parameter for oxygen supply/demand, venous oxygen saturation (SvO(2)) provided by pulmonary artery catheterization is one of the most popular parameters to assess the adequacy of cardiac output. However, technical limitations and potential iatrogenic complications constitute important limits for a widespread use. Regular central venous catheters coupled with a fiberoptic lumen for central venous oxygen saturation (ScvO(2)) monitoring have been proposed as a surrogate for SvO(2) monitoring. The purpose of the present article is to review the physiological backgrounds of circulation, the pathophysiology of circulatory failure and subsequent venous oxygen saturation alterations, and finally the merits and the limits of the use of ScvO(2) in different clinical situations.
血流动力学监测在重症监护病房已成为一项真正的挑战。作为氧供/需的综合参数，肺动脉导管检测到的静脉血氧饱和度（SvO2）是评估心输出量充足性的最常用参数之一。然而，技术限制和潜在的医源性并发症构成了广泛应用的重要限制。常规中心静脉导管结合光纤腔用于中心静脉血氧饱和度（ScvO2）监测，已被提出作为 SvO2 监测的替代方法。本文的目的是回顾循环的生理学背景、循环衰竭的病理生理学以及随后的静脉血氧饱和度变化，并最终评估 ScvO2 在不同临床情况下的应用价值和限制。
