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应用慢性呼吸性酸中毒预计代偿公式:ΔHCO_3~-=0.38×ΔPaCO_2±3.78及慢性呼吸性碱中毒预计代偿公式:ΔHCO_3~-=0.49×ΔPaCO_2±1.72结合AG=Na~+-(HCO_3~-+Cl~-)计算,诊断慢性肺心病三重酸碱失衡25例。AG值均>16mmol/L,其中21例(84.0%)>20mmol/L。目前正确判断三重酸碱失衡的关键在于恰当应用AG。AG增高可能是某些混合性代谢性酸中毒和代谢性碱中毒患者酸中毒的唯一证据。只要能排除其他引起AG升高的因素,即可诊断为高AG代谢性酸中毒。结果并提示肾功能不全是形成慢性肺心病高AG代谢性酸中毒的重要因素。
The predicted compensation formula of chronic respiratory acidosis: ΔHCO_3 ~ - = 0.38 × ΔPaCO_2 ± 3.78 and the predicted compensation formula of chronic respiratory alkalosis: ΔHCO_3 ~ - = 0.49 × ΔPaCO_2 ± 1.72 Combined AG = Na ~ + - (HCO_3 ~ - + Cl ~ -) calculation, diagnosis of chronic pulmonary heart disease triple acid-base imbalance in 25 cases. AG values were> 16mmol / L, of which 21 cases (84.0%)> 20mmol / L. The key to correctly judging the triple acid-base imbalance lies in the proper application of AG. Elevated AG may be the only evidence of acidosis in some patients with mixed metabolic acidosis and metabolic alkalosis. As long as you can rule out other factors that cause AG increased, you can diagnose high AG metabolic acidosis. Results and prompt renal insufficiency is an important factor in the formation of chronic AGH-AG metabolic acidosis.