Crystalloid Solution Composition Analysis

This section analyzes the electrolyte concentrations in common crystalloid solutions, namely Normal Saline and Hartmann's Solution (Lactated Ringer's), to identify the correct statement regarding their composition.

Normal Saline Composition Facts

Normal Saline, chemically 0.9% Sodium Chloride ($NaCl$), contains:

• Sodium ($Na^+$): 154 meq/L
• Chloride ($Cl^-$): 154 meq/L

Hartmann's Solution Composition Facts

Hartmann's Solution, also known as Lactated Ringer's, typically contains:

• Sodium ($Na^+$): 131 meq/L
• Chloride ($Cl^-$): 111 meq/L
• Lactate: 29 meq/L
• Potassium ($K^+$): 4 meq/L
• Calcium ($Ca^{++}$): 3 meq/L

Statement Evaluation

Comparing the established compositions with the given statements:

• Statement 1: Normal saline contains 100 meq/L of $Na^+$. This statement is incorrect. Normal saline has 154 meq/L of $Na^+$.
• Statement 2: Hartmann's solution contains 111 meq/L of $Cl^-$. This statement is correct. Hartmann's solution contains 111 meq/L of $Cl^-$.
• Statement 3: Normal saline contains 130 meq/L of $Cl^-$. This statement is incorrect. Normal saline has 154 meq/L of $Cl^-$.
• Statement 4: Hartmann's solution contains 111 meq/L of $Na^+$. This statement is incorrect. Hartmann's solution contains approximately 131 meq/L of $Na^+$.

Correct Crystalloid Composition

The analysis confirms that the correct statement is that Hartmann's solution contains 111 meq/L of Chloride ($Cl^-$).