what ecg changes are expected in a patient with hypokalemia

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

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

A. Flattened T waves
B. Prominent U waves
C. Widened QRS complexes
D. Tall T waves

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. A nurse is teaching a group of assistive personnel (AP) about caring for clients who have Alzheimer's disease. Which of the following information should the nurse include in the teaching?

A. Explain procedures clearly and concisely to the client before initiating care
B. Encourage a client's engagement in appropriate activities to minimize emotional outbursts
C. Speak calmly and at a moderate volume to a client who is unable to form words or sentences
D. Provide supervision to prevent a client from becoming injured or lost

Correct answer: D

Rationale: The correct answer is D because clients with Alzheimer's disease are at risk of wandering and becoming lost. Providing supervision helps prevent them from getting injured or lost. Choice A is incorrect because extensive details may overwhelm clients with Alzheimer's. Choice B is incorrect because limiting activities can lead to boredom and behavioral issues. Choice C is incorrect because speaking calmly and at a moderate volume helps to reduce agitation and confusion in clients with Alzheimer's.

3. A patient with GERD is receiving dietary teaching from a nurse. What should the nurse recommend?

A. Avoid mint and pepper
B. Increase fluid intake before meals
C. Eat three large meals per day
D. Avoid drinking water with meals

Correct answer: A

Rationale: The correct recommendation for a patient with GERD is to avoid foods like mint and pepper, as these can help reduce gastric acid secretion and alleviate symptoms. Mint and pepper are known to relax the lower esophageal sphincter, leading to increased reflux. Increasing fluid intake before meals (choice B) may worsen GERD symptoms by distending the stomach. Eating three large meals per day (choice C) can also aggravate GERD because large meals can lead to increased gastric pressure and reflux. Avoiding drinking water with meals (choice D) is generally recommended for GERD; however, the most crucial advice in this case is to avoid mint and pepper for better symptom management.

4. What lab value should be prioritized in a patient with HIV?

A. CD4 T-cell count below 180 cells/mm3
B. White blood cell count
C. Serum albumin levels
D. Hemoglobin levels

Correct answer: A

Rationale: The correct answer is A: CD4 T-cell count below 180 cells/mm3. Monitoring the CD4 T-cell count is crucial in patients with HIV as it indicates the level of immunocompromise. A count below 180 cells/mm3 signifies severe immunocompromise and an increased risk of opportunistic infections. Choices B, C, and D are not the priority lab values in HIV management. While white blood cell count, serum albumin levels, and hemoglobin levels are important, they do not directly reflect the immune status and progression of HIV as the CD4 T-cell count does.

5. 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.