Seminar: Assessing the Relationship between Cerebral Metabolic Rate of Oxygen and Redox Cytochrome C Oxidase During Cardiac Arrest and Cardiopulmonary Resuscitation

Student: Nima Soltani

Supervisor: Dr. Vladislav Toronov

Abstract

Understanding brain oxygen metabolism is crucial for evaluating overall health, particularly in high-stress medical situations such as cardiac arrest and cardiopulmonary resuscitation (CPR). This study focuses on two key indicators of brain oxygen metabolism: the cerebral metabolic rate of oxygen (CMRO2) and the oxidation state of redox cytochrome c oxidase (rCCO). Using advanced techniques like hyperspectral near-infrared spectroscopy (hNIRS) and laser doppler flowmetry (LDF), we have conducted a comprehensive analysis of their relationship in pigs during and after cardiac arrest and CPR. We investigated both the entire duration of these experiments and specific time intervals, providing a detailed view of how these metrics interact. The data reveals some causalities between rCCO and CMRO2, including both linear and nonlinear relationships, which offer valuable insights into the dynamics of oxygen delivery and consumption under extreme conditions. These findings contribute to a deeper understanding of how the brain manages oxygen during critical episodes, potentially guiding future interventions in neurological care and improving outcomes in emergency medical settings.