The need for hydration monitoring is significant, especially for the very young and elderly populations who are more vulnerable to becoming dehydrated and suffering from the effects that dehydration brings. This need has been among the drivers of considerable effort in the academic and commercial sectors to provide a means for monitoring hydration status, with a special interest in doing so outside the hospital or clinical setting. This review of emerging technologies provides an overview of many technology approaches that, on a theoretical basis, have sensitivity to water and are feasible as a routine measurement. We review the evidence of technical validation and of their use in humans. Finally, we highlight the essential need for these technologies to be rigorously evaluated for their diagnostic potential, as a necessary step to meet the need for hydration monitoring outside of the clinical environment.

中文翻译：

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无创监测脱水：我们做到了吗？

水合监测的需求非常大，特别是对于非常年轻和老年人群来说，他们更容易脱水并遭受脱水带来的影响。这种需求一直是学术和商业领域做出巨大努力的驱动因素之一，以提供一种监测水合状态的方法，特别是在医院或临床环境之外这样做。对新兴技术的回顾概述了许多技术方法，这些技术方法在理论基础上对水具有敏感性，并且作为常规测量是可行的。我们回顾了技术验证及其在人类中的使用的证据。最后，我们强调必须严格评估这些技术的诊断潜力，这是满足临床环境之外水合监测需求的必要步骤。