what ecg changes are expected in a patient with hypokalemia
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Nursing Elites

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. What ECG changes are expected in a patient with hypokalemia?

Correct answer: A

Rationale: Flattened T waves are an early indicator of hypokalemia on an ECG. Hypokalemia primarily presents with flattened T waves, not prominent U waves, widened QRS complexes, or tall T waves. Prominent U waves are associated with hypokalemia only in severe cases. Widened QRS complexes are more indicative of hyperkalemia, while tall T waves are seen in hyperkalemia as well.

2. What are the expected symptoms of a thrombotic stroke?

Correct answer: A

Rationale: The correct answer is A: 'Gradual loss of function on one side of the body.' In a thrombotic stroke, a clot blocks a cerebral artery, leading to a gradual onset of symptoms such as weakness, numbness, or paralysis on one side of the body. Choice B, 'Sudden loss of consciousness,' is more characteristic of a hemorrhagic stroke. Choice C, 'Severe headache and confusion,' are often associated with subarachnoid hemorrhage rather than thrombotic stroke. Choice D, 'Loss of sensation in the affected limb,' is not a typical symptom pattern for a thrombotic stroke, which usually presents with motor deficits.

3. What are the early signs of hypokalemia on an ECG?

Correct answer: A

Rationale: Flattened T waves are an early sign of hypokalemia on an ECG. In hypokalemia, the T waves may flatten and eventually invert. Elevated ST segments are not typically associated with hypokalemia. Prominent U waves are seen in conditions like hypokalemia, but they are not considered an early sign. A widened QRS complex is more commonly associated with hyperkalemia rather than hypokalemia.

4. What is the primary nursing action for a patient experiencing continuous bubbling in the chest tube water seal chamber?

Correct answer: A

Rationale: The correct answer is to tighten the connections of the chest tube system. Continuous bubbling in the chest tube water seal chamber indicates an air leak. By tightening the connections of the chest tube system, the nurse can often resolve the issue by ensuring there are no loose connections allowing air to enter. Clamping the chest tube or replacing the chest tube system are not appropriate actions in this situation. Clamping the tube can cause a dangerous buildup of pressure, while replacing the system should only be considered if tightening the connections does not resolve the air leak.

5. A nurse is planning care for a group of postoperative clients. Which of the following interventions should the nurse identify as the priority?

Correct answer: B

Rationale: The priority intervention is administering oxygen. Postoperatively, the client's oxygen saturation should be at or above 95%. Oxygen is essential for tissue perfusion and cellular oxygenation. While managing pain is important, oxygenation takes precedence. Instructing a client about coughing and deep breathing exercises is important for preventing respiratory complications but is not as urgent as addressing low oxygen saturation. Initiating an infusion of 0.9% sodium chloride is a routine postoperative intervention for fluid balance but is not the priority when oxygen saturation is low.

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