A dehydrated patient has been receiving 1.5 mEq of sodium chloride per lb of his body weight. If

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A dehydrated patient has been receiving 1.5 mEq of sodium...

A dehydrated patient has been receiving $1.5 \mathrm{mEq}$ of sodium chloride per $\mathrm{lb}$ of his body weight. If this patient's body weigh is $150 \mathrm{lb}$, how many milliliters of $0.9 \%$ sterile saline solution should be given to this patient?

Key Concepts

Weight-Based Dosage

This concept involves calculating medication doses based on a patient's weight to ensure individualized, accurate dosing. Using a weight-based approach is especially important in clinical settings where the physiological effects and required amounts of a drug vary with patient size.

Solution Concentration

Understanding the concentration of a solution, such as the 0.9% saline solution, is essential for determining how much of the solution contains a specific amount of solute. The percentage indicates the grams of solute per 100 mL of solvent, which is crucial for converting between the dosage prescribed in chemical units and the volume of the solution administered.

Unit Conversion and Dosage Calculation

Accurate dosing requires converting between different units, such as pounds to the relevant measure of solute needed and then to milliliters of solution. Mastery of unit conversion ensures that the prescribed dose (in mEq or other units) is accurately translated into the volume of fluid to be administered.

MilliEquivalents (mEq)

MilliEquivalents are a unit that measures the chemical activity or potency of ions in a solution. This concept is critical when calculating doses for electrolytes, as it directly relates to the amount of active ions (like sodium from sodium chloride) in the medication, ensuring physiological balance is maintained during treatment.

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