A nurse cares for a patient who has a serum potassium of 7.5 mEq/L and is exhibiting cardiovascular changes. Which should the nurse implement first?

Provide a heart healthy low potassium diet

Prepare to administer sodium polystyrene sulfate 15g by mouth

Prepare the patient for hemodialysis treatment

Prepare to administer dextrose 20% and 10 units of regular insulin IV push

Answer and Explanation

The Correct Answer is D

A. Provide a heart-healthy low-potassium diet:

While a heart-healthy low-potassium diet is essential for managing chronic hyperkalemia and preventing future occurrences, it is not the first intervention to implement in a patient with a serum potassium level of 7.5 mEq/L and exhibiting cardiovascular changes. The effects of dietary changes on serum potassium levels are gradual and may take days to have a significant impact. In an acute situation like this, immediate interventions are needed to rapidly lower potassium levels and address the associated cardiovascular risks.

B. Prepare to administer sodium polystyrene sulfate 15g by mouth:

Sodium polystyrene sulfate is a medication used to exchange sodium for potassium in the gastrointestinal tract, effectively lowering serum potassium levels over hours to days. While it is a valid treatment for hyperkalemia, its onset of action is not immediate enough to address the urgent cardiovascular changes seen in severe hyperkalemia. Therefore, it is not the first-line intervention in this scenario.

C. Prepare the patient for hemodialysis treatment:

Hemodialysis is an effective method for rapidly lowering serum potassium levels in cases of severe hyperkalemia. However, it is a more invasive and time-consuming procedure that requires preparation, including vascular access and dialysis setup. It is typically reserved for situations where other interventions have failed or in patients with severe or refractory hyperkalemia. In the context of this scenario, where the patient has a serum potassium level of 7.5 mEq/L and is exhibiting cardiovascular changes, hemodialysis may be considered if initial interventions are not successful, but it is not the first action to implement.

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Correct Answer is ["A","B","E"]

Explanation

A. Morbidly obese patient: Obesity is a known risk factor for VTE due to several reasons. Morbidly obese individuals often have impaired mobility, which can lead to venous stasis (sluggish blood flow in the veins). Additionally, obesity is associated with inflammation and changes in blood clotting factors, increasing the risk of developing blood clots in the veins.

B. A woman who smokes and takes oral contraceptives or smokes: Both smoking and oral contraceptive use are independent risk factors for VTE. Smoking can cause damage to blood vessels and alter blood clotting mechanisms, while oral contraceptives can increase the risk of blood clots due to hormonal changes.

C. Wheelchair-bound patient: While being wheelchair-bound alone may not always indicate a high risk for VTE, immobility is a significant risk factor for developing blood clots. Prolonged periods of immobility can lead to blood stasis in the veins, making wheelchair-bound patients susceptible to VTE, especially if other risk factors are present.

D. Patient with a humerus fracture: A humerus fracture on its own may not necessarily increase the risk of VTE significantly. However, if the fracture requires immobilization or surgery, especially if it affects the lower extremities or leads to prolonged immobility, the risk of VTE can increase due to decreased blood flow and stasis.

E. Patient who underwent a prolonged surgical procedure: Prolonged surgical procedures often involve anesthesia, immobility during surgery, and postoperative immobilization, all of which can contribute to venous stasis and increase the risk of developing VTE. Additionally, the surgical trauma itself can trigger inflammatory responses and alterations in blood clotting factors, further elevating the risk of blood clots.

A. Serum potassium level of 3.2 mEq/L B. Urine output of 1 200 mL in the last 2 hours C. Blood osmolality of 250 mOsm/kg (250 mmol/kg) D. Urine output of 25 mL/hr E. Serum potassium level of 5.4 mEq/L:

Correct Answer is ["A","D","E"]

Explanation

A serum potassium level of 3.2 mEq/L indicates hypokalemia, which is a potential complication of inhibiting aldosterone secretion and release. Aldosterone plays a key role in potassium regulation in the body by promoting potassium excretion in the kidneys. When aldosterone secretion is inhibited, potassium excretion decreases, leading to an accumulation of potassium in the bloodstream and resulting in hypokalemia. Symptoms of hypokalemia may include muscle weakness, cramping, irregular heartbeat, and fatigue.

B. Urine output of 1,200 mL in the last 2 hours:

This option does not directly relate to complications of inhibiting aldosterone secretion. A urine output of 1,200 mL in the last 2 hours indicates adequate urine production, which is generally a positive sign. However, in the context of inhibiting aldosterone secretion, the nurse would be more concerned about decreased urine output due to potential renal effects.

C. Blood osmolality of 250 mOsm/kg (250 mmol/kg):

Blood osmolality within the normal range (usually around 275-295 mOsm/kg) is not directly associated with complications of inhibiting aldosterone secretion. Blood osmolality reflects the concentration of solutes in the blood and is regulated by various factors, including water balance, electrolyte levels, and hormonal regulation. Inhibiting aldosterone secretion primarily affects electrolyte balance rather than blood osmolality.

D. Urine output of 25 mL/hr:

A urine output of 25 mL/hr is considered low and may indicate decreased renal perfusion or impaired kidney function. Inhibiting aldosterone secretion can affect renal function and urine output, leading to decreased urine production. Reduced urine output can contribute to fluid and electrolyte imbalances and may be a concern in patients with inhibited aldosterone secretion.

E. Serum potassium level of 5.4 mEq/L:

A serum potassium level of 5.4 mEq/L indicates hyperkalemia, which is another potential complication of inhibiting aldosterone secretion. Aldosterone helps regulate potassium levels by promoting potassium excretion in the kidneys. When aldosterone secretion is inhibited, potassium excretion decreases, leading to an accumulation of potassium in the bloodstream and resulting in hyperkalemia. Symptoms of hyperkalemia may include muscle weakness, irregular heartbeat, nausea, and numbness or tingling.

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A nurse cares for a patient who has a serum potassium of 7.5 mEq/L and is exhibiting cardiovascular changes. Which should the nurse implement first?

Nursing Test Bank

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