what are the expected changes on an ecg for a patient with hypokalemia

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. What are the expected changes on an ECG for a patient with hypokalemia?

A. Flattened T waves
B. Prominent U waves
C. ST elevation
D. Wide QRS complexes

Correct answer: A

Rationale: Flattened T waves are an early sign of hypokalemia on an ECG. Hypokalemia primarily manifests as flattened T waves on an ECG. While prominent U waves can be seen in hypokalemia, they are not as specific as flattened T waves. ST elevation is more commonly associated with conditions like myocardial infarction rather than hypokalemia. Wide QRS complexes are typically not a feature of hypokalemia on an ECG.

2. What is the purpose of an escharotomy?

A. To relieve pressure and improve circulation in burn injuries
B. To reduce pain in the affected area
C. To remove necrotic tissue from a wound
D. To prevent infection from spreading

Correct answer: A

Rationale: An escharotomy is performed to relieve pressure and improve circulation in areas affected by deep burns. This procedure helps prevent complications such as compartment syndrome by releasing the constricting eschar. Choice B is incorrect because while pain relief may be a secondary outcome of the procedure, the primary purpose is to address pressure and circulation issues. Choice C is incorrect as an escharotomy specifically focuses on releasing pressure, not removing necrotic tissue. Choice D is incorrect as the primary goal of an escharotomy is not to prevent infection but rather to address the immediate issues related to deep burn injuries.

3. What dietary recommendations should a patient with GERD follow?

A. Avoid mint and spicy foods
B. Consume liquids between meals
C. Eat three large meals per day
D. Drink milk as a snack

Correct answer: A

Rationale: Patients with GERD should follow dietary recommendations to manage their symptoms effectively. Choice A, 'Avoid mint and spicy foods,' is the correct answer. Mint and spicy foods can trigger acid reflux and worsen GERD symptoms. Choice B, 'Consume liquids between meals,' is not the best recommendation as consuming liquids during meals can worsen GERD symptoms by increasing stomach pressure. Choice C, 'Eat three large meals per day,' is incorrect as large meals can exacerbate GERD symptoms; instead, smaller, more frequent meals are recommended. Choice D, 'Drink milk as a snack,' is not ideal as full-fat dairy products like milk can trigger acid reflux in some individuals. Therefore, the best recommendation for a patient with GERD is to avoid mint and spicy foods.

4. What intervention should be done if continuous bubbling is seen in the chest tube water seal chamber?

A. Tighten the connections of the chest tube system
B. Replace the chest tube system
C. Clamp the chest tube
D. Continue monitoring the chest tube

Correct answer: A

Rationale: When continuous bubbling is observed in the chest tube water seal chamber, the appropriate intervention is to tighten the connections of the chest tube system. This step helps address an air leak in the system, which could compromise its effectiveness. Choice B (Replace the chest tube system) is not the initial step and may be unnecessary if the issue can be resolved by tightening connections. Choice C (Clamp the chest tube) is incorrect as clamping the chest tube could lead to a dangerous increase in pressure within the system. Choice D (Continue monitoring the chest tube) is also not the best immediate action to take when continuous bubbling is present, as prompt intervention is needed to prevent complications.

5. What are the common manifestations of a thrombotic stroke?

A. Gradual loss of function on one side of the body
B. Sudden loss of consciousness
C. Severe headache and confusion
D. Seizures and convulsions

Correct answer: A

Rationale: The correct answer is A: Gradual loss of function on one side of the body. A thrombotic stroke is characterized by a gradual onset of symptoms due to interrupted blood flow in the brain. This interruption results in manifestations such as weakness, numbness, or paralysis on one side of the body. Choices B, C, and D are incorrect because sudden loss of consciousness, severe headache, confusion, seizures, and convulsions are more commonly associated with conditions other than thrombotic strokes.