58) ANSWER

B) Hypervolemia is developing.

Explanation

This client presented with deficient fluid volume because of dehydration. Older adults have less cardiac and renal reserve to compensate for acute fluid imbalances, and thus are more susceptible to overcorrection when being treated for them. JVD, tachypnea, cough, and dyspnea indicate that this client has received too much IV fluid at too rapid a rate. Older adult clients cannot tolerate rapid rehydration, due to decreased cardiac and renal function. Note that the client is elderly, and has received too much fluid, indicating a fluid overload. Recall knowledge of fluid volume excess to eliminate option 1. Recognizing that the fluid is isotonic eliminates option 3. Option 4 can be eliminated, since no signs of ascites are mentioned.