1 :

Hint : 💡Identify the intervention that would worsen the client’s existing excess-water state.

Correct Answers:

  • Encourage the patient to Increase oral fluid intake.


Rationale :

💧Dilutional hyponatremia occurs when excessive body water dilutes the serum sodium concentration.

🚫Increasing oral fluids would worsen the water excess and further decrease the sodium level.

🥤Management commonly includes fluid restriction, daily weights, and strict intake and output monitoring.

💊A loop diuretic such as furosemide may help remove excess water, while hypertonic saline is reserved for appropriately selected symptomatic cases.

📌Core Message:

Clients with dilutional hyponatremia generally require fluid restriction because increasing oral fluids can worsen sodium dilution.

2 :

Hint : 💡Look for findings associated with increased neuromuscular and cardiovascular excitability.

Correct Answers:

  • Generalized muscle weakness
  • Blood Pressure: 158/94 mm/Hg
  • Positive Chvostek's sign
  • Positive Trousseau's sign
  • Heart rate: 118 beats/minute


Rationale :

🧪A calcium level of 7.2 mg/dL indicates hypocalcemia, while magnesium of 1.1 mg/dL indicates hypomagnesemia.

⚡Both electrolyte deficiencies increase neuromuscular excitability, producing weakness, tremors, cramps, and tetany.

🙂A positive Chvostek’s sign and positive Trousseau’s sign are classic manifestations of hypocalcemia.

❤️Hypomagnesemia can stimulate the cardiovascular system, causing hypertension, tachycardia, and dysrhythmias.

📌Core Message:

Hypocalcemia and hypomagnesemia produce increased neuromuscular excitability, positive Chvostek’s and Trousseau’s signs, weakness, tachycardia, and hypertension.

3 :

Hint : 💡Determine whether the abnormal carbon dioxide level moves in the opposite direction from the pH.

Correct Answers:

  • Respiratory alkalosis


Rationale :

🧪The pH of 7.48 indicates alkalemia because it is above the normal range of 7.35 to 7.45.

🫁The PaCO₂ of 30 mm Hg is low, identifying a respiratory cause of the alkalemia.

⚖️The bicarbonate level of 24 mEq/L remains normal, indicating no metabolic compensation.

📋These findings represent uncompensated respiratory alkalosis.

📌Core Message:

A high pH, low PaCO₂, and normal bicarbonate indicate uncompensated respiratory alkalosis.

4 :

Hint : 💡Prioritize actions that stop the cause and immediately support breathing and oxygenation.

Correct Answers:

  • Obtain pulse oximetry reading.
  • Elevate the head of the bed.
  • Stop IV infusion.


Rationale :

🚨Difficulty breathing during a rapid isotonic infusion suggests fluid volume overload and possible pulmonary edema.

⛔The nurse should immediately stop the infusion to prevent additional circulatory overload.

🛏️Elevating the head of the bed promotes lung expansion and decreases venous return to the heart.

🩸Pulse oximetry assesses the severity of impaired oxygenation and guides further intervention.

📌Core Message:

Suspected infusion-related fluid overload requires stopping the infusion, positioning the client upright, and immediately assessing oxygenation.

5 :

Hint : 💡Address both the client’s elevated sodium concentration and evidence of fluid overload.

Correct Answers:

  • Administer 0.45% normal saline as prescribed
  • Restrict sodium intake
  • Monitor for agitation and confusion
  • Implement seizure precautions


Rationale :

🧂A sodium level of 158 mEq/L indicates significant hypernatremia, which causes water to move out of body cells.

💧Prescribed 0.45% sodium chloride gradually supplies hypotonic fluid to lower sodium and restore intracellular hydration.

🩺Hypertension and pitting edema indicate fluid volume excess, making sodium restriction appropriate.

🧠Hypernatremia can cause agitation, confusion, muscle twitching, and seizures, requiring neurological monitoring and seizure precautions.

📌Core Message:

Hypervolemic hypernatremia requires gradual hypotonic fluid replacement, sodium restriction, and close monitoring for serious neurological complications.

6 :

Hint : 💡Identify the value matching the abnormal pH direction, then determine whether compensation has normalized the pH.

Correct Answers:

  • Metabolic acidosis – partially compensated


Rationale :

🧪The pH of 7.31 indicates acidemia.

⬇️The bicarbonate level of 18 mEq/L is decreased, identifying metabolic acidosis as the primary disorder.

🫁The PaCO₂ of 30 mm Hg is decreased because the lungs are eliminating additional carbon dioxide through respiratory compensation.

⚖️Because the pH remains outside the normal range, the disorder is partially compensated rather than fully compensated.

📌Core Message:

A low pH and bicarbonate with compensatory reduction in PaCO₂ indicate partially compensated metabolic acidosis.

7 :

Hint : 💡Prioritize the organ system facing the most immediate life-threatening complication.

Correct Answers:

  • Place the client on telemetry.


Rationale :

❤️A potassium level of 5.6 mEq/L indicates hyperkalemia, which can disrupt cardiac electrical conduction.

⚡Tingling suggests the electrolyte imbalance is producing neuromuscular manifestations.

📈Continuous telemetry allows immediate detection of peaked T waves, conduction delays, and lethal dysrhythmias.

🚨Cardiac monitoring takes priority because hyperkalemia can rapidly progress to ventricular dysrhythmias or cardiac arrest.

📌Core Message:

Symptomatic hyperkalemia requires immediate telemetry because dangerous cardiac conduction changes can occur rapidly.

8 :


Prompts Metabolic acidosis Respiratory alkalosis
DKA, renal failure, and Kussmaul respirations
Panic attack with rapid respirations
Persistent vomiting with NG suction
COPD exacerbation with wheezing

Hint : 💡Determine whether each condition primarily changes carbon dioxide or bicarbonate and whether the change raises or lowers the pH.

Correct Answers

  • DKA, renal failure, and Kussmaul respirations [ Metabolic acidosis ]
  • Panic attack with rapid respirations [ Respiratory alkalosis ]
  • Persistent vomiting with NG suction [ Metabolic acidosis ]
  • COPD exacerbation with wheezing [ Respiratory alkalosis ]

Rationale :

🧪DKA and renal failure cause accumulation of acids or impaired acid excretion, producing metabolic acidosis.

😰Rapid breathing during a panic attack eliminates excessive carbon dioxide, producing respiratory alkalosis.

🤮Persistent vomiting and NG suction remove gastric hydrochloric acid, producing metabolic alkalosis.

🫁A COPD exacerbation causes carbon dioxide retention from impaired ventilation, producing respiratory acidosis.

📌Core Message:

Acid accumulation causes metabolic acidosis, hyperventilation causes respiratory alkalosis, gastric acid loss causes metabolic alkalosis, and carbon dioxide retention causes respiratory acidosis.

9 :

Hint : 💡Select findings produced by reduced circulating fluid volume and compensatory cardiovascular responses.

Correct Answers:

  • Tachycardia
  • Decreased blood pressure
  • Weak, thready pulse
  • Dry mucous membranes


Rationale :

💧Prolonged vomiting and diarrhea cause significant fluid volume deficit through gastrointestinal losses.

❤️Tachycardia develops as a compensatory response to maintain cardiac output despite reduced circulating volume.

🩺Decreased blood pressure and a weak, thready pulse indicate diminished intravascular volume and peripheral perfusion.

👄Dry mucous membranes are a common physical manifestation of dehydration.


📌Core Message:

Prolonged vomiting and diarrhea cause dehydration, manifested by tachycardia, hypotension, a weak pulse, dry mucous membranes, and reduced urinary output.

Total Questions: 9

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