Evolution of blood gas testing - Part 2

May 1, 2014

Presented by Ellis Jacobs, PhD, Assoc. Professor of Pathology, NYU School of Medicine

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Evolution of Blood Gas Testing: Focusing on the Source of Impaired O2 Supply to the Tissue Part 2
Speaker: Ellis Jacobs, Ph. D, DABCC, FACB
Associate Professor of Pathology, NYU School of Medicine
Director of Pathology, Coler-Goldwater Hospital and Nursing Facility

Blood gas testing has improved over the years thanks to advances in technology. 60 years ago, blood gas testing meant determining pO2, pCO2 and pH. What is blood gas testing today? This series of webinars will investigate current assessment and diagnostic methods and the use of co-oximetry and lactate measurement to more precisely assess a patient’s ability to utilize oxygen.

Session 1 reviewed the practical applications of the acid-base chart as an indicator to distinguish between metabolic vs respiratory disturbances. It identified the terminology, causes, and symptoms of acid-base imbalance. The session also reviewed the importance of base excess for in-depth analysis of metabolic versus respiratory imbalance, and analyzed the acid base chart and its application in interpreting the acid-base status.

Session 2 will provide a more in-depth look at the ability of today’s blood gas testing to determine the cause of reduced oxygen transport and release to tissues. Traditionally, pO2 has been the sole parameter used for evaluation of patient oxygen status. For a complete evaluation of the oxygen status, it is necessary to consider lactate, as well as other factors that affect oxygen uptake, transport, and release. This session will discuss reasons for reduced oxygen carrying capacity, identify different methods for oxygen saturation assessment and the pitfalls associated with some of these methods, and investigate the value of measured vs calculated saturation using co-oximetry.

This webinar series will provide a fresh in-depth look at today’s blood gas testing for anyone involved in the diagnosis, monitoring and treatment of acutely ill patients.

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