Nursing Elites

1. The LPN/LVN is assisting in caring for a client in the telemetry unit and is monitoring the client for cardiac changes indicative of hypokalemia. Which occurrence noted on the cardiac monitor indicates the presence of hypokalemia?

• A. Tall, peaked T waves
• B. ST-segment depression
• C. Prolonged P-R interval
• D. Widening of the QRS complex

Correct answer: B

Rationale: ST-segment depression can indicate hypokalemia, affecting the heart's electrical conduction. Hypokalemia leads to alterations in the repolarization phase of the cardiac action potential, resulting in ST-segment depression on the ECG. Tall, peaked T waves are indicative of hyperkalemia, not hypokalemia. A prolonged P-R interval is more commonly associated with first-degree heart block. Widening of the QRS complex is typically seen in conditions like bundle branch blocks or ventricular tachycardia, not specifically in hypokalemia.

2. The client with a history of heart failure is receiving digoxin (Lanoxin). Which electrolyte imbalance increases the risk of digoxin toxicity?

• A. Hypernatremia
• B. Hypercalcemia
• C. Hypokalemia
• D. Hypomagnesemia

Correct answer: C

Rationale: Hypokalemia increases the risk of digoxin toxicity as low potassium levels enhance the effects of digoxin on the heart, leading to toxicity and potential adverse effects. Hypernatremia (Choice A) is not directly associated with an increased risk of digoxin toxicity. Hypercalcemia (Choice B) does not increase the risk of digoxin toxicity. Hypomagnesemia (Choice D) can contribute to digoxin toxicity, but hypokalemia has a more significant impact on increasing the risk.

3. The client is receiving heparin therapy for deep vein thrombosis (DVT). Which lab test should be monitored to evaluate the effectiveness of heparin?

• A. Prothrombin time (PT)
• B. International normalized ratio (INR)
• C. Activated partial thromboplastin time (aPTT)
• D. Fibrinogen levels

Correct answer: C

Rationale: Activated partial thromboplastin time (aPTT) is the appropriate lab test to monitor the therapeutic effectiveness of heparin therapy. Heparin affects the intrinsic pathway of the coagulation cascade, and monitoring aPTT helps ensure the client is within the therapeutic range to prevent clot formation. Prothrombin time (PT) and International normalized ratio (INR) are used to monitor warfarin therapy, a different anticoagulant that affects the extrinsic pathway of the coagulation cascade. Fibrinogen levels are not specific to monitoring heparin therapy.

4. The healthcare professional is assisting in the care of a client diagnosed with deep vein thrombosis (DVT). Which instruction should be reinforced to prevent complications?

• A. Elevate the affected leg using pillows.
• B. Perform leg exercises while sitting.
• C. Wear snug compression stockings.
• D. Avoid applying ice packs to injuries.

Correct answer: A

Rationale: Elevating the affected leg using pillows is crucial in managing deep vein thrombosis (DVT) as it helps reduce swelling and promote venous return, thereby decreasing the risk of complications such as pulmonary embolism. This position aids in improving blood circulation and preventing blood clots from forming or worsening in the affected leg. Performing leg exercises while sitting might increase the risk of dislodging a blood clot. While snug compression stockings are beneficial, the primary focus should be on elevation. Avoiding ice packs on injuries is unrelated to DVT management.

5. A client with a history of heart failure is admitted with a diagnosis of pulmonary edema. Which intervention should the LPN/LVN expect to assist with first?

• A. Administer a diuretic as prescribed.
• B. Place the client in a high Fowler's position.
• C. Prepare the client for intubation.
• D. Insert an indwelling urinary catheter.

Correct answer: B

Rationale: In a client with pulmonary edema, placing them in a high Fowler's position is the priority intervention. This position helps to improve ventilation and oxygenation by decreasing venous return, reducing the workload on the heart, and facilitating fluid redistribution from the lungs. It is crucial to optimize respiratory function and oxygenation before considering other interventions like administering medications, preparing for intubation, or inserting a urinary catheter. Administering a diuretic, preparing for intubation, or inserting a urinary catheter may be necessary but should follow the priority of improving oxygenation through positioning.

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