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Signa Vitae

Journal of Intensive Care and Emergency Medicine

Relationship between mean arterial pressure and end-tidal partial pressure of carbon dioxide during

Abstract

Objectives. We examined the relationship between partial end-tidal CO2 (pet) and mean arterial pressure in patients with traumatic hemorrhagic shock, who were receiving constant minute ventilation.
Methods. In 61 patients we continuously measured pet CO2 with a capnograph, direct arterial pressure via a cannula, oxygen levels via pulse oximetry and body temperature.
Results. We observed significant changes in pet CO2 (increase) after volume resuscitation and a quantitative linear relationship between pet CO2 and mean arterial pressure.
Conclusions. Partial end-tidal CO2 can be used as a reliable non-invasive monitoring device in patients with hemorrhagic shock when minute ventilation is relatively constant. The monitoring of pet CO2 might also be a useful guide for volume resuscitation in hemorrhagic shock, especially in the pre-hospital setting.

Keywords: end- tidal CO2, mean arterial pressure, hemorrhagic shock, relationship

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Clinical Applications of Capnography

Abstract

This article gives a short review of the basic definitions of capnography and its use. The introduction gives an overview of the historical development of this procedure. Technical features of the method are presented, followed by several definitions for understanding the basic terms needed to realize the applications of capnography. The last section is a descriptive part that explains the most important clinical applications of capnography, the strengths and limitations of this method. This article distinguishes capnography applications as a single procedure and its benefits as a complimentary procedure.

Key words: capnography, monitoring, ventilation, end-tidal CO2

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