Whole blood ionised calcium concentration was measured simultaneously in capillary and arterial blood from neonates being nursed on an intensive care unit using an ion selective electrode. The mean arterio-capillary difference was -0.027 mmol/l (95% confidence intervals -0.041 to -0.012 mmol/l) and the limits of agreement between the two measurements were 0.034 and -0.088 mmol/l. Measurement of ionised calcium in capillary blood is acceptable for clinical purposes.
CITATION STYLE
Husain, S. M., Veligati, N., Sims, D. G., Chiswick, M. L., & Mughal, M. Z. (1993). Measurement of ionised calcium concentration in neonates. Archives of Disease in Childhood, 69(1 SUPPL.), 77–78. https://doi.org/10.1136/adc.69.1_spec_no.77
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