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. A patient diagnosed with hypokalemia is at risk for which condition?

A. Cardiac dysrhythmias
B. Muscle weakness
C. Seizures
D. Bradycardia

Correct answer: A

Rationale: Patients diagnosed with hypokalemia are at risk for cardiac dysrhythmias due to low potassium levels. Hypokalemia can lead to abnormalities in the electrical conduction system of the heart, potentially causing irregular heart rhythms. Muscle weakness (Choice B) is a symptom commonly associated with hypokalemia, but the question asks about conditions the patient is at risk for, not specific symptoms. Seizures (Choice C) are not typically associated with hypokalemia; they are more commonly linked with conditions such as epilepsy. Bradycardia (Choice D) refers to a slow heart rate, which is not a typical risk associated with hypokalemia; instead, tachycardia (fast heart rate) is more commonly observed in patients with low potassium levels.

3. A nurse is teaching a client about using a continuous positive airway pressure (CPAP) device to treat obstructive sleep apnea. Which of the following information should the nurse include in the teaching?

A. It delivers a preset amount of inspiratory pressure throughout the breathing cycle
B. It has a continuous adjustment feature that changes the airway pressure throughout the cycle
C. It delivers a preset amount of airway pressure throughout the breathing cycle
D. It delivers positive pressure at the end of each breath

Correct answer: C

Rationale: The correct answer is C because a CPAP device delivers a preset amount of positive airway pressure continuously throughout all inspiration and expiration cycles. Choice A is incorrect because CPAP does not deliver inspiratory pressure at the beginning of each breath; it provides continuous positive pressure. Choice B is incorrect because CPAP typically delivers a constant pressure rather than having a feature that changes pressure throughout the cycle. Choice D is incorrect as CPAP does not deliver positive pressure specifically at the end of each breath; it maintains a consistent pressure throughout the breathing cycle.

4. What dietary instructions should be provided for a patient with pre-dialysis end-stage kidney disease?

A. Limit phosphorus intake to 700 mg/day
B. Increase protein intake to 1g/kg/day
C. Increase sodium intake
D. Avoid potassium-rich foods

Correct answer: A

Rationale: Patients with pre-dialysis end-stage kidney disease should limit phosphorus intake to manage their condition. Excessive phosphorus can lead to mineral and bone disorders in patients with kidney disease. Choices B, C, and D are incorrect. Increasing protein intake is not recommended as it can burden the kidneys. Increasing sodium intake is usually discouraged due to its association with hypertension and fluid retention in kidney disease. Avoiding potassium-rich foods is more relevant in advanced kidney disease stages when potassium levels are high, not in pre-dialysis end-stage kidney disease.

5. A client who has burn injuries covering their upper body is concerned about their altered appearance. Which of the following statements should the nurse make?

A. It is okay to not want to touch the burned areas of your body.
B. Cosmetic surgery should be performed within the next year to be effective.
C. Reconstructive surgery can completely restore your previous appearance.
D. It could be helpful for you to attend a support group for people who have burn injuries.

Correct answer: D

Rationale: The nurse should encourage the client to attend a support group for individuals who have burn injuries. Support groups can provide emotional support, shared experiences, and coping strategies for accepting their altered appearance. Choice A is not the best response as it does not offer proactive support. Choice B is not appropriate as the timing of cosmetic surgery should be determined by healthcare providers, not immediate. Choice C is misleading as reconstructive surgery may improve appearance but may not completely restore the previous look.