The electrical impedance of plasma: A laboratory simulation of the effect of changes in chemistry

To evaluate the role of plasma chemistry in the genesis of electrical impedance of blood, a laboratory simulation was performed using solutions prepared so as to mimic plasma chemistry abnormalities that are seen in the critically ill. There was a 15% increase of impedance due to decrease in sodium chloride concentration from 140 mmol/L to 120 mmol/L, and a 12% decrease of impedance due to increase in sodium chloride to 160 mmol/L. Impedance …