Sorva A, Elfving S, Sievers G, Tilvis R S
Koskela Hospital, University of Helsinki.
Gerontology. 1992;38(1-2):87-91. doi: 10.1159/000213311.
Serum ionized (CaI), total (CaT) and albumin-'corrected' total (CaA) calcium concentrations were measured in 108 geriatric long-term inpatients on admission and again 37 months (mean) later. Mean CaI, especially when pH adjusted, remained extremely stable, indicating well-preserved homeostatic calcemic control even in the terminal years in the elderly. Further, the results indicate that in addition to their previously shown invalidity in interindividual comparisons, CaT and CaA are inferior to CaI and can also be misleading in the detection of slight longitudinal changes in the 'true' calcemic status of an individual geriatric patient.
对108名老年长期住院患者入院时及37个月(平均)后再次测定血清离子钙(CaI)、总钙(CaT)和白蛋白校正总钙(CaA)浓度。平均CaI,尤其是经pH调整后,保持极度稳定,表明即使在老年人生命的最后几年,血钙稳态控制仍保存良好。此外,结果表明,除了先前显示在个体间比较中无效外,CaT和CaA不如CaI,在检测老年患者个体“真实”血钙状态的轻微纵向变化时也可能产生误导。