Jeffery R W, Mullenbach V A, Bjornson-Benson W M, Prineas R J, Forster J L, Schlundt D G
Addict Behav. 1987;12(1):17-21. doi: 10.1016/0306-4603(87)90004-9.
To estimate the utility of quantab chloride titrators, a product of Ames Laboratories, in estimating urine and diet sodium, two study populations were examined. The first consisted of 56 normotensive individuals providing timed, overnight, urine collections and 24-hour food records as part of the baseline assessment for a hypertension prevention study. The second group consisted of 19 study employees, who were instructed to maintain a low sodium diet, and to self-assess diet sodium and urine chloride at home. Results showed that urine chloride measured by quantab was highly correlated with urine sodium. Neither urine chloride nor urine sodium correlated highly with the previous day's intake of dietary sodium as measured by food record. It is estimated that five overnight urine samples would be required to estimate food record sodium to within +/- 25 mEq in individuals with relatively stable diets. Home assessment of urine chloride is feasible. It seems likely that clinical procedures which combine self-monitoring of dietary sodium intake by food record and home measurement of urine chloride concentration would be an effective way of providing persons prescribed sodium restricted diets with continuous and convergent feedback about their success in dietary adherence.
为评估艾姆斯实验室生产的氯化物定量滴定仪在估算尿液和饮食中钠含量方面的效用，对两组研究人群进行了检查。第一组由56名血压正常的个体组成，他们作为一项高血压预防研究基线评估的一部分，提供定时的夜间尿液样本以及24小时食物记录。第二组由19名研究人员组成，他们被要求保持低钠饮食，并在家中自行评估饮食中的钠含量和尿液中的氯化物含量。结果显示，用定量滴定仪测得的尿液氯化物与尿液钠高度相关。尿液氯化物和尿液钠与通过食物记录测得的前一天饮食中钠的摄入量均无高度相关性。据估计，对于饮食相对稳定的个体，要将通过食物记录估算的钠含量精确到±25毫当量以内，需要五个夜间尿液样本。在家中评估尿液氯化物是可行的。将通过食物记录进行饮食中钠摄入量的自我监测与在家中测量尿液氯化物浓度相结合的临床程序，似乎有可能成为一种有效的方式，为规定了钠限制饮食的人提供关于他们饮食依从性成功与否的持续且一致的反馈。
