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. What is the first intervention for a patient admitted with unstable angina?

A. Administer nitroglycerin
B. Obtain cardiac enzymes
C. Start IV fluids
D. Monitor for chest pain

Correct answer: A

Rationale: The correct first intervention for a patient admitted with unstable angina is to administer nitroglycerin. Nitroglycerin helps to relieve chest pain by dilating blood vessels and increasing blood flow to the heart, thereby reducing cardiac workload. This intervention aims to alleviate symptoms and prevent further cardiac damage. Obtaining cardiac enzymes (Choice B) is important for diagnosing a myocardial infarction but is not the initial intervention for unstable angina. Starting IV fluids (Choice C) may be indicated in specific cases like hypovolemia but is not the primary intervention for unstable angina. Monitoring for chest pain (Choice D) is essential but taking action to alleviate the pain, like administering nitroglycerin, is the primary focus in the initial management of unstable angina.

3. What dietary modifications are recommended for a patient with pre-dialysis kidney disease?

A. Limit phosphorus intake to 700 mg/day
B. Increase sodium intake to 3 g/day
C. Restrict protein intake to 0.55-0.60 g/kg/day
D. Eat three large meals per day

Correct answer: A

Rationale: The correct answer is A: Limit phosphorus intake to 700 mg/day. Patients with pre-dialysis kidney disease should limit phosphorus intake to prevent further kidney damage. Excessive phosphorus can lead to mineral and bone disorders. Choice B is incorrect because increasing sodium intake is not recommended in pre-dialysis kidney disease. Choice C is incorrect as protein restriction is a common recommendation in advanced kidney disease, not pre-dialysis. Choice D is incorrect as eating three large meals per day is not a specific dietary modification for pre-dialysis kidney disease.

4. What are the expected signs in a patient with compartment syndrome?

A. Unrelieved pain, pallor, and pulselessness
B. Fever and infection
C. Localized redness and swelling
D. Loss of sensation in the affected area

Correct answer: A

Rationale: In a patient with compartment syndrome, the classic signs include unrelieved pain, pallor, and pulselessness. These signs indicate compromised circulation and neurovascular function in the affected compartment. Fever and infection (Choice B) are not typical signs of compartment syndrome. Localized redness and swelling (Choice C) can be seen in other conditions like cellulitis but are not specific to compartment syndrome. Loss of sensation in the affected area (Choice D) may occur in some cases but is not as specific or consistent as unrelieved pain, pallor, and pulselessness in diagnosing compartment syndrome.

5. A nurse is developing a plan of care for a client who will be placed in halo traction following surgical repair of the cervical spine. Which of the following interventions should the nurse include in the plan?

A. Inspect the pin site every 4 hours
B. Monitor the client's skin under the halo vest
C. Ensure two personnel hold the halo device when repositioning the client
D. Apply powder to the client's skin under the vest to decrease itching

Correct answer: B

Rationale: The correct answer is to monitor the client's skin under the halo vest. This is important to assess for signs of skin issues such as excessive sweating, redness, or blistering, which can lead to skin breakdown and infection. Choice A is incorrect because while inspecting the pin site is important, it should be done more frequently than every 4 hours. Choice C is incorrect as the halo device should be supported by the client's body weight, not personnel, when repositioning. Choice D is incorrect because applying powder frequently can increase the risk of skin irritation and infection.