A client who received 6 units of packed red blood cells 3 days ago for a lower gastrointestinal (GI) bleed is now displaying signs of shortness of breath with occasional stridor and is reporting muscle cramping.
Reference Range:
Potassium [3.5 to 5 mEq/L (3.5 to 5 mmol/L)]
Magnesium [Adult: 1.3 to 2.1 mEq/L (0.65 to 1.05 mmol/L)]
Calcium [9 to 10.5 mg/dL (2.3 to 2.6 mmol/L)]
Sodium (136 to 145 mEq/L (136 to 145 mmol/L)]
Which serum laboratory value should the nurse immediately report to the healthcare provider?
Potassium 4.7 mEq/L (4.70 mmol/L).
Magnesium 2.1 mEq/L (0.86 mmol/L).
Calcium 6.5 mg/dL (1.63 mmol/L).
Sodium 135 mEq/L (135 mmol/L).
The Correct Answer is C
Choice A reason: Potassium 4.7 mEq/L (4.70 mmol/L) is within the normal reference range of 3.5 to 5 mEq/L (3.5 to 5 mmol/L). Potassium is an electrolyte that helps regulate the balance of fluids and acids in the body, as well as the function of nerves and muscles. A high potassium level (hyperkalemia) can cause muscle weakness, irregular heartbeat, and cardiac arrest. A low potassium level (hypokalemia) can cause muscle cramps, fatigue, and arrhythmias.
Choice B reason: Magnesium 2.1 mEq/L (0.86 mmol/L) is within the normal reference range of 1.3 to 2.1 mEq/L (0.65 to 1.05 mmol/L). Magnesium is an electrolyte that helps regulate the activity of enzymes, muscles, and nerves, as well as the balance of calcium and potassium in the body. A high magnesium level (hypermagnesemia) can cause nausea, vomiting, flushing, muscle weakness, and respiratory depression. A low magnesium level (hypomagnesemia) can cause muscle twitching, tremors, seizures, and cardiac arrhythmias.
Choice C reason: Calcium 6.5 mg/dL (1.63 mmol/L) is below the normal reference range of 9 to 10.5 mg/dL (2.3 to 2.6 mmol/L). Calcium is an electrolyte that helps regulate the function of muscles, nerves, bones, and blood clotting. A high calcium level (hypercalcemia) can cause nausea, vomiting, constipation, confusion, kidney stones, and bone pain. A low calcium level (hypocalcemia) can cause muscle spasms, cramps, tingling, numbness, and stridor (a high-pitched sound when breathing). **This is a critical value that should be immediately reported to the healthcare provider**, as it can indicate a serious condition such as acute pancreatitis, sepsis, or massive blood transfusion.
Choice D reason: Sodium 135 mEq/L (135 mmol/L) is slightly below the normal reference range of 136 to 145 mEq/L (136 to 145 mmol/L). Sodium is an electrolyte that helps regulate the balance of fluids and acids in the body, as well as the function of nerves and muscles. A high sodium level (hypernatremia) can cause thirst, dry mouth, confusion, seizures, and coma. A low sodium level (hyponatremia) can cause headache, nausea, vomiting, fatigue, muscle weakness, and confusion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Sodium polystyrene sulfonate is a medication that binds to excess potassium in the gastrointestinal tract and removes it from the body through feces. It is used to treat hyperkalemia, which is a high level of potassium in the blood. Hyperkalemia can cause cardiac arrhythmias and muscle weakness, and it is a common complication of AKI. Therefore, this medication should be administered first to lower the potassium level and prevent life-threatening complications.
Choice B reason: Sevelamer is a medication that binds to phosphorus in the gastrointestinal tract and removes it from the body through feces. It is used to treat hyperphosphatemia, which is a high level of phosphorus in the blood. Hyperphosphatemia can cause bone loss and soft tissue calcification, and it is a common complication of chronic kidney disease (CKD). However, it is not an urgent issue in AKI, and it does not affect the potassium level.
Choice C reason: Calcium acetate is a medication that also binds to phosphorus in the gastrointestinal tract and removes it from the body through feces. It has the same effect and indication as sevelamer, but it also provides calcium supplementation. However, it is not an urgent issue in AKI, and it does not affect the potassium level.
Choice D reason: Epoetin alfa, recombinant is a medication that stimulates the production of red blood cells in the bone marrow. It is used to treat anemia, which is a low level of hemoglobin or red blood cells in the blood. Anemia can cause fatigue, weakness, and shortness of breath, and it is a common complication of CKD and AKI. However, it is not an urgent issue in AKI, and it does not affect the potassium level.
Correct Answer is ["F","H"]
Explanation
a) Basic metabolic panel: This is a blood test that measures the levels of electrolytes, glucose, calcium, and kidney function. It is not a priority order for this client because her glucose level is within the normal range and her symptoms are not indicative of electrolyte imbalance or kidney failure.
b) Echocardiogram: This is a test that uses sound waves to create images of the heart and its valves, chambers, and blood flow. It is not a priority order for this client because her chest discomfort may not be related to a cardiac problem and her SpO2 is normal, indicating adequate oxygenation.
c) CT scan of abdomen: This is a test that uses X-rays to create detailed pictures of the organs and structures in the abdomen. It is not a priority order for this client because her abdominal pain is not severe or acute and her nausea and poor appetite may be due to her illness or dialysis.
d) Blood cultures times 2 sets: This is a test that checks for the presence of bacteria or fungi in the blood. It is not a priority order for this client because she does not have signs of infection such as fever, chills, or leukocytosis.
e) Chest X-ray: This is a test that uses X-rays to create images of the lungs and chest wall. It is not a priority order for this client because she does not have respiratory symptoms such as cough, shortness of breath, or wheezes.
f) Place on continuous cardiac monitor: This is an order that requires the nurse to attach electrodes to the client's chest and monitor the heart rate and rhythm continuously. This is a priority order for this client because she has a history of CAD and HTN and reports chest discomfort and lightheadedness, which could indicate a possible myocardial infarction (heart attack) or arrhythmia (irregular heartbeat).
g) CBC: This is a blood test that measures the number and types of blood cells, such as red blood cells, white blood cells, and platelets. It is not a priority order for this client because she does not have signs of anemia, bleeding, or infection.
h) 12 lead EKG: This is a test that records the electrical activity of the heart from 12 different angles. It can detect abnormalities in the heart's rhythm, conduction, or damage. This is a priority order for this client because she has a history of CAD and HTN and reports chest discomfort and lightheadedness, which could indicate a possible myocardial infarction (heart attack) or arrhythmia (irregular heartbeat).
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