Chantler J, Cox D J
Department of Intensive Care, Royal Free Hospital, London, UK.
Br J Anaesth. 1999 Nov;83(5):810-2. doi: 10.1093/bja/83.5.810.
We have compared ionized magnesium assays in the Nova 8 electrolyte analyser using dry balanced heparinized syringes and self-prepared heparinized syringes. Thirty blood specimens were obtained into syringes either operator-prepared with liquid sodium heparin or commercially manufactured dry balanced heparinized syringes. There was a good correlation between results from the two syringes. The mean difference between sampling methods was 0.01 mmol litre-1 (95% confidence index -0.05 to 0.08 mmol litre-1). The correlations for sodium, potassium and ionized calcium assays were similarly close. The relationship between sampling methods was close enough to justify the clinical use of self-prepared syringes, with potential economies in clinical costs.
我们比较了在诺瓦8电解质分析仪中使用干燥平衡肝素化注射器和自制肝素化注射器进行的离子镁测定。采集了30份血液标本到注射器中，这些注射器要么是操作人员用液体肝素钠自行制备的，要么是商业制造的干燥平衡肝素化注射器。两种注射器的检测结果之间具有良好的相关性。采样方法之间的平均差异为0.01毫摩尔/升（95%置信区间为-0.05至0.08毫摩尔/升）。钠、钾和离子钙测定的相关性同样紧密。采样方法之间的关系足够密切，足以证明自制注射器在临床上的使用是合理的，同时在临床成本上可能会节省开支。
