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Related Concept Videos

Hydration of Cement01:24

Hydration of Cement

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Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
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Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
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Therapeutic Drug Monitoring (TDM) is a clinical practice that measures specific drug levels in a patient's blood or body tissues to tailor drug therapy effectively. This monitoring is critical for managing drugs with narrow therapeutic indices like digoxin and phenytoin, ensuring they are both safe and effective. For instance, monitoring theophylline levels in asthma patients involves precision and sensitivity to adjust doses according to individual responses to therapy, ensuring efficacy and...
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Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test
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Acoustical Method of Whole-Body Hydration Status Monitoring.

A P Sarvazyan1, S N Tsyuryupa1, M Calhoun2

  • 1Artann Laboratories Inc., Trenton, NJ, 08618, USA.

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|January 23, 2018
PubMed
Summary
This summary is machine-generated.

A new handheld hydration monitor (HM) uses ultrasound velocity in muscle to assess body water balance. This device shows potential for easily detecting dehydration in vulnerable populations like the elderly.

Keywords:
body hydrationhydration monitorultrasound velocity

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Area of Science:

  • Biomedical Engineering
  • Physiology
  • Public Health

Background:

  • Dehydration poses a significant public health risk, particularly for the elderly, infants, and young children.
  • Early detection of dehydration is crucial as it is preventable and reversible.
  • Existing methods for assessing hydration status can be complex or invasive.

Purpose of the Study:

  • To develop and validate a non-invasive, handheld hydration monitor (HM) for assessing human body water balance.
  • To evaluate the HM's ability to detect changes in hydration status in different populations.

Main Methods:

  • The HM utilizes the principle that ultrasound velocity in muscle correlates linearly with water content.
  • Studies were conducted on healthy young adults and elderly individuals at an assisted living facility.
  • The HM's performance was assessed during dehydration/rehydration periods and for diurnal variations.

Main Results:

  • The HM accurately tracked changes in total body water during acute dehydration and rehydration in athletes.
  • The device effectively monitored day-to-day and diurnal hydration variability in elderly subjects.
  • Human studies demonstrated the HM's capability in assessing whole-body hydration status.

Conclusions:

  • The developed handheld hydration monitor (HM) is a promising tool for assessing body water balance.
  • The HM offers a simple and efficient method for detecting abnormal hydration changes.
  • This technology has the potential for widespread clinical application in monitoring hydration status.