背景 近红外光谱仪（near-infrared spectroscopy， NIRS）是一种新型无创监测方法，可监测身体的氧平衡。为心脏病患者实时监测氧饱和度可以优化心脏病患者的围手术期管理，降低术后并发症，减少住院时间。 目的 为心脏手术围手术期NIRS监测的相关研究和临床应用提供参考。 内容 主要介绍NIRS的基本原理、影响因素以及NIRS在心脏病患者中的应用。 趋向 积极探索NIRS在心脏病患者中的应用价值，为改善心脏病患者预后做努力。
Background Near-infrared spectroscopy (NIRS) is a new noninvasive method to monitor oxygen balance in the body. It has been used for real-time perioperative monitoring in patients with heart diseases to reduce postoperative complications and to facilitate recovery. Objective To provide reference for the related research and clinical application of NIRS in perioperative monitoring duration cardiac surgery. Content According to the Lambert-Beer Law and the light scattering theory, photo-absorption coefficients of reduced and oxygen-saturated hemoglobin are significantly different. The fluctuation of photo-absorption detected by NIRS can be used to estimate the dynamics of oxygen saturation in the blood. The estimation is often confounded by intracranial perfusion pressure, diameter of carotid, and hematocrit. During operation, surgeons can rely on NIRS to determine whether intervention is needed to prevent the occurrence of neurological complications. Post-operative NIRS monitoring can detect low cardiac output syndrome. Trend Perioperative monitoring with NIRS in patients with heart diseases can reduce the neurological complications and improve recovery in these patients.
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