Add time:09/01/2019         Source:sciencedirect.com

Near-infrared spectroscopy (NIRS) is an emerging noninvasive monitoring modality based on chromophore absorption of infrared light. There are four different types of NIRS system—continuous, time domain, frequency domain, and functional—and numerous devices that are now commercially available. These devices differ by the use of different technical components to obtain continuous NIRS values. Their resulting values are not necessarily interchangeable, and few studies have compared them.Cerebral NIRS is an indirect indicator of perfusion adequacy. Therefore, it allows continuous information on oxygen supply-versus-demand balance. NIRS is indicated when continuous monitoring of cerebral tissue perfusion is considered. Therefore, the application of NIRS covers many procedures including cardiac and noncardiac surgeries but also applications in intensive care and emergency medicine in other clinical and research areas. Furthermore, there is a growing interest in the use of somatic NIRS because both cerebral and somatic desaturation have been associated with worse outcome. The somatic component could serve as an earlier warning of impaired perfusion. There are several limitations in the use of NIRS monitoring and pitfalls that are discussed in detail. As any technology, NIRS is being used as part of a multimodal strategy because abnormal NIRS indicates a perfusion problem but does not provide the precise mechanism. Future studies should explore the impact of this approach on clinical outcome.

We also recommend Trading Suppliers and Manufacturers of Red 7 (cas 1342-63-8). Pls Click Website Link as below: cas 1342-63-8 suppliers