Johnson Francis
Department of Cardiology,
Baby Memorial Hospital.
(Former Professor of Cardiology, Govt. Medical College, Kozhikode)
Abstract
Near-Infrared Spectroscopy (NIRS) tissue oximetry is a novel noninvasive method used to evaluate tissue oxygenation. Though NIRS was first described more than 40 years ago, use of NIRS has increased significantly worldwide in the past decade. NIRS is based on the fact that near-infrared light is able to penetrate biologic tissue and can obtain real-time noninvasive information on tissue oxygenation. Oxygenation-dependent light absorbing characteristics of hemoglobin is utilised in NIRS.
