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NCLEX - Fluid & Electrolyte Imbalances
Questions and Correct Answers Updated
2025 Rated A
A client at risk for developing hyperkalemia states, I love fruit and usually eat it every day, but now I cant because of my high potassium level. How should the nurse respond? a. Potatoes and avocados can be substituted for fruit. b. If you cook the fruit, the amount of potassium will be lower. c. Berries, cherries, apples, and peaches are low in potassium. d. You are correct. Fruit is very high in potassium. - ANSANS: C - Not all fruit is potassium rich. Fruits that are relatively low in potassium and can be included in the diet include apples, apricots, berries, cherries, grapefruit, peaches, and pineapples. Fruits high in potassium include bananas, kiwi, cantaloupe, oranges, and dried fruit. Cooking fruit does not alter its potassium content. A nurse assesses a client who is admitted for treatment of fluid overload. Which manifestations should the nurse expect to find? (Select all that apply.) a. Increased pulse rate b. Distended neck veins c. Decreased blood pressure d. Warm and pink skin
e. Skeletal muscle weakness - ANSANS: A, B, E - Manifestations of fluid overload include increased pulse rate, distended neck veins, increased blood pressure, pale and cool skin, and skeletal muscle weakness. A nurse assesses a client who is prescribed a medication that inhibits aldosterone secretion and release. For which potential complications should the nurse assess? (Select all that apply.) a. Urine output of 25 mL/hr b. Serum potassium level of 5.4 mEq/L c. Urine specific gravity of 1.02 g/mL d. Serum sodium level of 128 mEq/L e. Blood osmolality of 250 mOsm/L - ANSANS: B, E - Aldosterone is a naturally occurring hormone of the mineralocorticoid type that increases the reabsorption of water and sodium in the kidney at the same time that it promotes excretion of potassium. Any drug or condition that disrupts aldosterone secretion or release increases the clients risk for excessive water loss (increased urine output), increased potassium reabsorption, decreased blood osmolality, and increased urine specific gravity. The client would not be at risk for sodium imbalance. A nurse assesses a client who is prescribed a medication that inhibits angiotensin I from converting into angiotensin II (angiotensin-converting enzyme [ACE] inhibitor). For which expected therapeutic effect should the nurse assess? a. Blood pressure decrease from 180/72 mm Hg to 144/50 mm Hg
help prevent hyperkalemia in the future but will not decrease the clients current potassium level. A nurse develops a plan of care for a client who has a history of hypocalcemia. What interventions should the nurse include in this clients care plan? (Select all that apply.) a. Encourage oral fluid intake of at least 2 L/day. b. Use a draw sheet to reposition the client in bed. c. Strain all urine output and assess for urinary stones. d. Provide nonslip footwear for the client to use when out of bed. e. Rotate the client from side to side every 2 hours. - ANSANS: B, D - Clients with long-standing hypocalcemia have brittle bones that may fracture easily. Safety needs are a priority. Nursing staff should use a draw sheet when repositioning the client in bed and have the client wear nonslip footwear when out of bed to prevent fractures and falls. The other interventions would not provide safety for this client. A nurse is assessing a client who has an electrolyte imbalance related to renal failure. For which potential complications of this electrolyte imbalance should the nurse assess? (Select all that apply.) a. Electrocardiogram changes b. Slow, shallow respirations c. Orthostatic hypotension d. Paralytic ileus
e. Skeletal muscle weakness - ANSANS: A, D, E - Electrolyte imbalances associated with acute renal failure include hyperkalemia and hyperphosphatemia. The nurse should assess for electrocardiogram changes, paralytic ileus caused by decrease bowel mobility, and skeletal muscle weakness in clients with hyperkalemia. The other choices are potential complications of hypokalemia. A nurse is assessing a client with hypokalemia, and notes that the clients handgrip strength has diminished since the previous assessment 1 hour ago. Which action should the nurse take first? a. Assess the clients respiratory rate, rhythm, and depth. b. Measure the clients pulse and blood pressure. c. Document findings and monitor the client. d. Call the health care provider. - ANSANS: A - In a client with hypokalemia, progressive skeletal muscle weakness is associated with increasing severity of hypokalemia. The most life-threatening complication of hypokalemia is respiratory insufficiency. It is imperative for the nurse to perform a respiratory assessment first to make sure that the client is not in immediate jeopardy. Cardiac dysrhythmias are also associated with hypokalemia. The clients pulse and blood pressure should be assessed after assessing respiratory status. Next, the nurse would call the health care provider to obtain orders for potassium replacement. Documenting findings and continuing to monitor the client should occur during and after potassium replacement therapy.
A nurse is assessing clients on a medical-surgical unit. Which client is at risk for hypokalemia? a. Client with pancreatitis who has continuous nasogastric suctioning b. Client who is prescribed an angiotensin-converting enzyme (ACE) inhibitor c. Client in a motor vehicle crash who is receiving 6 units of packed red blood cells d. Client with uncontrolled diabetes and a serum pH level of 7.33 - ANSANS: A - A client with continuous nasogastric suctioning would be at risk for actual potassium loss leading to hypokalemia. The other clients are at risk for potassium excess or hyperkalemia. A nurse is assessing clients on a medical-surgical unit. Which clients are at increased risk for hypophosphatemia? (Select all that apply.) a. A 36-year-old who is malnourished b. A 42-year-old with uncontrolled diabetes c. A 50-year-old with hyperparathyroidism d. A 58-year-old with chronic renal failure e. A 76-year-old who is prescribed antacids - ANSANS: A, B, E - Clients at risk for hypophosphatemia include those who are malnourished, those with uncontrolled diabetes mellitus, and those who use aluminum hydroxide- based or magnesium-based antacids. Hyperparathyroidism and chronic renal failure are common causes of hyperphosphatemia.
A nurse is caring for a client who exhibits dehydration-induced confusion. Which intervention should the nurse implement first? a. Measure intake and output every 4 hours. b. Apply oxygen by mask or nasal cannula. c. Increase the IV flow rate to 250 mL/hr. d. Place the client in a high-Fowlers position. - ANSANS: B - Dehydration most frequently leads to poor cerebral perfusion and cerebral hypoxia, causing confusion. Applying oxygen can reduce confusion, even if perfusion is still less than optimal. Increasing the IV flow rate would increase perfusion. However, depending on the degree of dehydration, rehydrating the client too rapidly with IV fluids can lead to cerebral edema. Measuring intake and output and placing the client in a high-Fowlers position will not address the clients problem. A nurse is caring for a client who has a serum calcium level of 14 mg/dL. Which provider order should the nurse implement first? a. Encourage oral fluid intake. b. Connect the client to a cardiac monitor. c. Assess urinary output. d. Administer oral calcitonin (Calcimar). - ANSANS: B - This client has hypercalcemia. Elevated serum calcium levels can decrease cardiac output and cause cardiac dysrhythmias. Connecting the client to a cardiac monitor is a priority to assess for lethal cardiac changes. Encouraging oral fluids, assessing urine output, and administering calcitonin are treatments for hypercalcemia, but are not the highest priority.
Although dehydration in an older adult may cause confusion, speaking quietly will not help the client remain calm or decrease confusion. Assessing the clients urine may assist with the diagnosis of dehydration but would not prevent injury. Clients are encouraged to drink fluids, but 1 liter of fluid each shift for an older adult may cause respiratory distress and symptoms of fluid overload, especially if the client has heart failure or renal insufficiency. A nurse is caring for clients with electrolyte imbalances on a medical- surgical unit. Which clinical manifestations are correctly paired with the contributing electrolyte imbalance? (Select all that apply.) a. Hypokalemia Flaccid paralysis with respiratory depression b. Hyperphosphatemia Paresthesia with sensations of tingling and numbness c. Hyponatremia Decreased level of consciousness d. Hypercalcemia Positive Trousseaus and Chvosteks signs e. Hypomagnesemia Bradycardia, peripheral vasodilation, and hypotension
- ANSANS: A, C - Flaccid paralysis with respiratory depression is associated with hypokalemia. Decreased level of consciousness is associated with hyponatremia. Paresthesia with sensations of tingling and numbness is associated with hypophosphatemia or hypercalcemia. Positive Trousseaus and Chvosteks signs are associated with hypocalcemia or hyperphosphatemia. Bradycardia, peripheral vasodilation, and hypotension are associated with hypermagnesemia.
A nurse is evaluating a client who is being treated for dehydration. Which assessment result should the nurse correlate with a therapeutic response to the treatment plan? a. Increased respiratory rate from 12 breaths/min to 22 breaths/min b. Decreased skin turgor on the clients posterior hand and forehead c. Increased urine specific gravity from 1.012 to 1.030 g/mL d. Decreased orthostatic light-headedness and dizziness - ANSANS: D - The focus of management for clients with dehydration is to increase fluid volumes to normal. When fluid volumes return to normal, clients should perfuse the brain more effectively, therefore improving confusion and decreasing orthostatic light-headedness or dizziness. Increased respiratory rate, decreased skin turgor, and increased specific gravity are all manifestations of dehydration. A nurse teaches a client who is at risk for mild hypernatremia. Which statement should the nurse include in this clients teaching? a. Weigh yourself every morning and every night. b. Check your radial pulse twice a day. c. Read food labels to determine sodium content. d. Bake or grill the meat rather than frying it. - ANSANS: C - Most prepackaged foods have a high sodium content. Teaching clients how to read labels and calculate the sodium content of food can help them adhere to prescribed sodium restrictions and can prevent hypernatremia. Daily self-weighing and pulse checking are methods of identifying manifestations of hypernatremia, but they do not prevent it. The addition of substances
tendon reflexes, and U waves present on the ECG are all manifestations of hypokalemia and do not demonstrate that treatment is working. After teaching a client to increase dietary potassium intake, a nurse assesses the clients understanding. Which dietary meal selection indicates the client correctly understands the teaching? a. Toasted English muffin with butter and blueberry jam, and tea with sugar b. Two scrambled eggs, a slice of white toast, and a half cup of strawberries c. Sausage, one slice of whole wheat toast, half cup of raisins, and a glass of milk d. Bowl of oatmeal with brown sugar, a half cup of sliced peaches, and coffee - ANSANS: C - Meat, dairy products, and dried fruit have high concentrations of potassium. Eggs, breads, cereals, sugar, and some fruits (berries, peaches) are low in potassium. The menu selection of sausage, toast, raisins, and milk has the greatest number of items with higher potassium content. After teaching a client who is being treated for dehydration, a nurse assesses the clients understanding. Which statement indicates the client correctly understood the teaching? a. I must drink a quart of water or other liquid each day. b. I will weigh myself each morning before I eat or drink. c. I will use a salt substitute when making and eating my meals.
d. I will not drink liquids after 6 PM so I wont have to get up at night. - ANSANS: B - One liter of water weighs 1 kg; therefore, a change in body weight is a good measure of excess fluid loss or fluid retention. Weight loss greater than 0.5 lb daily is indicative of excessive fluid loss. The other statements are not indicative of practices that will prevent dehydration. After teaching a client who is prescribed a restricted sodium diet, a nurse assesses the clients understanding. Which food choice for lunch indicates the client correctly understood the teaching? a. Slices of smoked ham with potato salad b. Bowl of tomato soup with a grilled cheese sandwich c. Salami and cheese on whole wheat crackers d. Grilled chicken breast with glazed carrots - ANSANS: D - Clients on restricted sodium diets generally should avoid processed, smoked, and pickled foods and those with sauces and other condiments. Foods lowest in sodium include fish, poultry, and fresh produce. The ham, tomato soup, salami, and crackers are often high in sodium.
