目的:了解真性红细胞增多症(PV)患者外周血中红细胞增多与红细胞存活时间长短的相关性。方法:采集10例真性红细胞增多症患者离体抗凝全血和10例正常人离体抗凝全血,放血当天测定钾以排除患者血浆钾和正常人的差异和外界的影响因素,然后定期测定真性红细胞增多患者和正常人离体血浆中钾的浓度的变化,以了解红细胞破坏的程度。结果:真性红细胞增多症患者组第五天到第十天的钾离子浓度变化,第十天到第十五天的钾离子浓度变化,第十五天到第二十天的钾离子浓度变化均比正常人的大(P<0.05)。结论:真红患者红细胞的存活时间比正常人的短,间接证明真性红细胞增多症患者骨髓造血增生。 Objective: To investigate the correlation between erythrocyte increase in peripheral blood and the survival time of erythrocytes in patients with polycythemia vera (PV). Methods: A total of 10 cases of polycythemia vera ex vivo anticoagulant whole blood and 10 cases of normal human anticoagulant whole blood were measured on the day of bleeding potassium to exclude patients with plasma potassium and normal differences and external factors, and then regularly Determination of true polycythemia patients and normal plasma concentrations of potassium in plasma changes in order to understand the extent of red cell damage. Results: The changes of potassium ion concentration from the fifth day to the tenth day in patients with polycythemia vera, the changes of potassium ion concentration from the tenth to the fifteenth days and the changes of the potassium ion concentration from the fifteenth to the twentieth days Greater than normal (P <0.05). Conclusion: The true red blood cells in patients with true red survival time is shorter, indirect evidence of polycythemia in patients with bone marrow hematopoietic hyperplasia.