Fluid And Electrolyte Imbalances Practice Test

A 70-year-old client with heart failure is admitted for fluid volume excess and is receiving a loop diuretic. The client has bilateral crackles and 3+ pitting edema. Vital signs: blood pressure 156/88 mm Hg, heart rate 98/min, respiratory rate 24/min, oxygen saturation 92% on 2 L/min nasal cannula. Labs: sodium 126 mEq/L (low), potassium 4.1 mEq/L. Which symptom indicates a need for FURTHER assessment?

A 6-year-old child with acute gastroenteritis has had vomiting and watery diarrhea for 2 days and is lethargic with decreased tears. Vital signs: heart rate 132/min, respiratory rate 24/min, blood pressure 88/50 mm Hg; capillary refill 4 seconds. Labs: potassium 2.9 mEq/L (low), bicarbonate 18 mEq/L (low). What is the nurse's PRIORITY action for this child?