The perfusion index (PI) derived from plethysmographic signals provides a noninvasive indication of peripheral perfusion. This study aimed to investigate changes in PI and other hemodynamic variables in pigs subjected to endotoxemia.

中文翻译：

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使用灌注指数检测内毒素血症猪的血流动力学变化。

从体积描记信号得出的灌注指数（PI）提供了周围灌注的非侵入性指示。这项研究旨在调查内毒素血症猪的PI和其他血液动力学变量的变化。