A client with renal calculi is experiencing hematuria and reports severe flank pain.
Which intervention should the nurse implement first?

The correct answer is choice C: Increase rate of ventilation.

Choice A rationale:

Decreasing expiratory flow time would not directly address the elevated PaCO2 levels. This intervention is more related to managing expiratory phase issues rather than correcting respiratory acidosis.

Choice B rationale:

Decreasing expiratory pressure might help with certain ventilation issues, but it does not specifically target the elevated PaCO2 and resulting acidosis.

Choice C rationale:

Increasing the rate of ventilation helps to blow off more CO2, thereby reducing PaCO2 levels and correcting the respiratory acidosis indicated by the pH of 7.26 and PaCO2 of 68 mm Hg.

Choice D rationale:

Increasing the ventilator tidal volume could also help reduce PaCO2 by increasing the amount of air exchanged with each breath. However, increasing the rate of ventilation is generally a more immediate and effective intervention for acute respiratory acidosis.

Choice A rationale:

Serum sodium level. Rationale: While electrolyte imbalances can be significant, in the context of purulent drainage at a postoperative site, monitoring serum sodium levels is not the top priority. Other laboratory values are more relevant in this situation.

Choice B rationale:

Hematocrit. Rationale: Hematocrit measures the proportion of red blood cells in the blood and is not directly related to wound drainage or infection. It is not the most relevant parameter to assess in this situation.

Choice C rationale:

Neutrophil count. Rationale: Neutrophils are a type of white blood cell that plays a key role in the body's immune response, particularly against bacterial infections. Elevated neutrophil counts can indicate an ongoing infection, so monitoring this value is important when assessing purulent wound drainage.

Choice D rationale:

Platelet count. Rationale: Platelet count measures the number of blood clotting cells in the blood and is not directly related to wound drainage or infection. It is not the most relevant parameter to assess in this situation.