Analysis for the acid-base imbalance of patients with SARS

Objective To analyze the acid-base imbalance of 21 SARS patients hospitalized in our hospital. Methods The Specimens of femoral arterial blood from patients with SARS were detected by gas-electrolyte analysis instrument. The simple acid-base imbalance was determined according to the values of PaCO3, HCO3- and pH; then whether it was mixed acid-base imbalance was assessed by counting these parameters according to the formula of acid-base imbalance; subsequently, based on the values of AC and Cl-↑of blood, whether it was trio acid-base imbalance was judged. Results (l)The acid-base imbalance of respiratory alkalosis was dominant type. (2)The mixed acid-base imbalance was more often found than simple one. (3)It was short of respiratory acidosis, respiratory acidosis and metabolic alkalosis, metabolic acidosis and metabolic alkalosis and trio acid-base imbalance. Conclusion The clinical characters of SARS are severity of patient' s condition, rapid deterioration of state of illness, with high fever, and the decrease of CO2 and HCO3- in blood caused by overventilation. The blood will tend to alkalosis, and the respiratory alkalosis happens easily with shorter compensation period,then the mixed acid-base imbalance may be resulted fast.