Díaz EA, Monares ZE, Aguirre SJ, Poblano MM, Camarena AG, Franco GJ

Language: Spanish
References: 7
Page: 36-41
PDF size: 82.35 Kb.

ABSTRACT

In the critically ill patient resuscitation, cardiac output (CO) is an invaluable measure. Currently available methods require the use of invasive devices based on thermodilution principle or contour analysis of pulse wave with sophisticated devices and not is easily accessible, while noninvasive calculation using Fick’s equation has high bias. From models of rebreathing carbon dioxide (CO₂) and venoarterial CO₂ difference formula was made to estimate the production of CO₂ and cardiac output.
Objective: The purpose of this work is to perform cardiac output measurement using modified Fick’s formula and correlated with cardiac output obtained by thermodilution and Fick equation.
Methods: We obtained data from patients which were determined cardiac output by thermodilution and proposed formula, both values ​​are compared using Pearson correlation.
Results: We analyzed 74 index measurements where Pearson correlation was 0.67 between the two measurements. The correlation between the value of cardiac output and venoarterial difference was -0.36 which is expected by the components of the formula. A correlation between hemoglobin and venoarterial difference was -0.1 and 0.076 in to oxygen saturation concerns.
Conclusions: The measurement of cardiac output by correlation formula was low correlation and should be review and compare with other methods of measurement.

REFERENCES

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