6. Postulates of the acid-base balance theory

The postulates of the acid-base balance theory are listed below [14]:


Figure 12.

Erythrocyte

Figure 13.

Table 2.

44

pCO2 variance.

X-axis predicted respiratory pH vs. y-axis pCO2.

X-axis predicted respiratory pH(Pr RpH) calculated by newer formulae vs. y-axis Pr RpH calculated using

Predicted respiratory pH calculation using pCO2 variance (previous method) Parameter pCO2 > 40 mmHg pCO2 < 40 mmHg pCO2 variance (pCO2 40)/100 (40 pCO2)/100 Predicted respiratory pH 7.4 (pCO2 variance)/2 7.4 + (pCO2 variance) Predicted respiratory pH calculation using newly derived formulae

ΔRpH [pH NRpH] = 1.6 + log {(HCO3/Std HCO3)/pCO2}

Comparison of predicted respiratory pH calculation (one by previous method using pCO2 variance and the

Predicted respiratory pH 7.4 + ΔRpH

other by newly derived formulae).

Formulae is the same for all the values of PCO2

10.The respiratory influence of pCO2 in changing pH through bicarbonate is a variable one (ratio of HCO3/Std HCO3) depending on the acute or chronic conditions or compensations and through carbonic acid is a constant one given by (H2CO3 1.2)/H2CO3.

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