Florida RN Mock Test: Fluid & Electrolyte Balance Updated
most Frequent Tested Exam 2026 WITH Recent Newest
Verified And Well Analyzed Exam Questions (Actual Exam
2026-2027) Correct Detailed & Verified ANSWERS (100%
Accurate Solutions) ALREADY GRADED A+||NEWEST
VERSION Of The Exam Guarantee Pass!!
A nurse is assessing a client with dehydration. Which finding is most indicative of fluid
volume deficit?
A. Bounding pulse
B. Jugular vein distention
C. Dry mucous membranes
D. Peripheral edema
Answer: C. Dry mucous membranes
Rationale: Dry mucous membranes are a classic sign of dehydration due to reduced
body fluid. Bounding pulse and jugular vein distention indicate fluid overload, while
edema reflects excess fluid retention.
A client with heart failure is at risk for fluid volume excess. Which assessment finding
should the nurse expect?
A. Hypotension
B. Crackles in the lungs
C. Flat neck veins
D. Increased hematocrit
Answer: B. Crackles in the lungs
Rationale: Crackles indicate pulmonary congestion from fluid overload. Hypotension
and flat neck veins suggest deficit, while hematocrit typically decreases in fluid excess
due to dilution.
Which electrolyte imbalance is most commonly associated with cardiac dysrhythmias?
,A. Hypocalcemia
B. Hyperkalemia
C. Hypermagnesemia
D. Hypernatremia
Answer: B. Hyperkalemia
Rationale: Potassium plays a key role in cardiac conduction. Elevated potassium levels
can cause dangerous arrhythmias, including ventricular fibrillation.
A nurse is caring for a client with hyponatremia. Which symptom is most concerning?
A. Dry skin
B. Confusion
C. Constipation
D. Muscle weakness
Answer: B. Confusion
Rationale: Hyponatremia can cause cerebral edema, leading to neurological symptoms
such as confusion, seizures, and coma.
A client receiving IV fluids develops shortness of breath and edema. What is the nurse’s
priority action?
A. Increase IV rate
B. Stop the infusion
C. Place client flat
D. Encourage fluids
Answer: B. Stop the infusion
Rationale: These symptoms indicate fluid overload. The nurse should immediately stop
the infusion to prevent further complications.
Which laboratory value indicates hypernatremia?
A. Sodium 130 mEq/L
B. Sodium 135 mEq/L
, C. Sodium 145 mEq/L
D. Sodium 150 mEq/L
Answer: D. Sodium 150 mEq/L
Rationale: Normal sodium range is 135–145 mEq/L. Values above this indicate
hypernatremia.
A client has hypokalemia. Which ECG change should the nurse monitor for?
A. Peaked T waves
B. U waves
C. ST elevation
D. Wide QRS complex
Answer: B. U waves
Rationale: Hypokalemia causes U waves, flattened T waves, and possible arrhythmias.
Which IV solution is isotonic?
A. 0.45% saline
B. 0.9% saline
C. D5W (after metabolism)
D. 3% saline
Answer: B. 0.9% saline
Rationale: Normal saline (0.9%) is isotonic and does not cause fluid shifts between
compartments.
A client with hypercalcemia may exhibit which symptom?
A. Tetany
B. Seizures
C. Constipation
D. Hyperreflexia
Answer: C. Constipation
most Frequent Tested Exam 2026 WITH Recent Newest
Verified And Well Analyzed Exam Questions (Actual Exam
2026-2027) Correct Detailed & Verified ANSWERS (100%
Accurate Solutions) ALREADY GRADED A+||NEWEST
VERSION Of The Exam Guarantee Pass!!
A nurse is assessing a client with dehydration. Which finding is most indicative of fluid
volume deficit?
A. Bounding pulse
B. Jugular vein distention
C. Dry mucous membranes
D. Peripheral edema
Answer: C. Dry mucous membranes
Rationale: Dry mucous membranes are a classic sign of dehydration due to reduced
body fluid. Bounding pulse and jugular vein distention indicate fluid overload, while
edema reflects excess fluid retention.
A client with heart failure is at risk for fluid volume excess. Which assessment finding
should the nurse expect?
A. Hypotension
B. Crackles in the lungs
C. Flat neck veins
D. Increased hematocrit
Answer: B. Crackles in the lungs
Rationale: Crackles indicate pulmonary congestion from fluid overload. Hypotension
and flat neck veins suggest deficit, while hematocrit typically decreases in fluid excess
due to dilution.
Which electrolyte imbalance is most commonly associated with cardiac dysrhythmias?
,A. Hypocalcemia
B. Hyperkalemia
C. Hypermagnesemia
D. Hypernatremia
Answer: B. Hyperkalemia
Rationale: Potassium plays a key role in cardiac conduction. Elevated potassium levels
can cause dangerous arrhythmias, including ventricular fibrillation.
A nurse is caring for a client with hyponatremia. Which symptom is most concerning?
A. Dry skin
B. Confusion
C. Constipation
D. Muscle weakness
Answer: B. Confusion
Rationale: Hyponatremia can cause cerebral edema, leading to neurological symptoms
such as confusion, seizures, and coma.
A client receiving IV fluids develops shortness of breath and edema. What is the nurse’s
priority action?
A. Increase IV rate
B. Stop the infusion
C. Place client flat
D. Encourage fluids
Answer: B. Stop the infusion
Rationale: These symptoms indicate fluid overload. The nurse should immediately stop
the infusion to prevent further complications.
Which laboratory value indicates hypernatremia?
A. Sodium 130 mEq/L
B. Sodium 135 mEq/L
, C. Sodium 145 mEq/L
D. Sodium 150 mEq/L
Answer: D. Sodium 150 mEq/L
Rationale: Normal sodium range is 135–145 mEq/L. Values above this indicate
hypernatremia.
A client has hypokalemia. Which ECG change should the nurse monitor for?
A. Peaked T waves
B. U waves
C. ST elevation
D. Wide QRS complex
Answer: B. U waves
Rationale: Hypokalemia causes U waves, flattened T waves, and possible arrhythmias.
Which IV solution is isotonic?
A. 0.45% saline
B. 0.9% saline
C. D5W (after metabolism)
D. 3% saline
Answer: B. 0.9% saline
Rationale: Normal saline (0.9%) is isotonic and does not cause fluid shifts between
compartments.
A client with hypercalcemia may exhibit which symptom?
A. Tetany
B. Seizures
C. Constipation
D. Hyperreflexia
Answer: C. Constipation
