what changes are associated with hyperkalemia on an ecg

ATI RN

ATI Capstone Medical Surgical Assessment 2 Quizlet

1. What ECG change is associated with hyperkalemia?

A. Flattened T waves
B. ST depression
C. Prominent U waves
D. Elevated ST segments

Correct answer: B

Rationale: The correct ECG change associated with hyperkalemia is ST depression. Hyperkalemia typically presents with ECG changes such as peaked T waves, prolonged PR interval, widened QRS complex, and finally, ST segment depression. Flattened T waves are more commonly associated with hypokalemia. Prominent U waves are seen in hypokalemia as well. Elevated ST segments are not a typical ECG finding in hyperkalemia.

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 is the first-line treatment for wheezing due to an allergic reaction?

A. Albuterol via nebulizer
B. Cromolyn via nebulizer
C. Methylprednisolone 100 mg IV
D. Aminophylline 500 mg IV

Correct answer: A

Rationale: The correct answer is A, Albuterol via nebulizer. Albuterol is the first-line treatment for wheezing caused by an allergic reaction because it acts quickly to open the airways by relaxing the muscles in the air passages. Cromolyn (Choice B) is used for asthma prevention rather than acute wheezing. Methylprednisolone (Choice C) and Aminophylline (Choice D) are not the first-line treatments for acute wheezing in the setting of an allergic reaction.

4. A nurse is providing discharge teaching to a client who is starting to take carbidopa/levodopa to treat Parkinson's disease. Which of the following instructions should the nurse include in the teaching?

A. This medication can cause your urine to turn a dark color.
B. Expect immediate relief after taking this medication.
C. Take the medication with a high protein food.
D. Skip a dose of the medication if you experience dizziness.

Correct answer: A

Rationale: The correct instruction to include in the teaching is that carbidopa/levodopa can cause the client's urine to turn a dark color, which is a harmless effect. It is crucial for the nurse to educate the client about this common side effect. Choice B is incorrect because immediate relief is not expected; therapeutic effects may take weeks to months. Choice C is incorrect as carbidopa/levodopa should be taken on an empty stomach to enhance absorption. Choice D is incorrect as the client should not skip doses without consulting their healthcare provider, even if they experience dizziness.

5. What are the expected signs of compartment syndrome?

A. Unrelieved pain, pallor, and pulselessness
B. Fever, swelling, and redness
C. Muscle cramps and weakness
D. Redness and itching

Correct answer: A

Rationale: The correct answer is A: Unrelieved pain, pallor, and pulselessness. Compartment syndrome is characterized by increased pressure within a muscle compartment, leading to inadequate blood supply. This results in severe pain that is unrelieved by rest or medication, pallor due to compromised blood flow, and pulselessness as a late sign of severe ischemia. Choices B, C, and D are incorrect. Fever, swelling, and redness are not typical signs of compartment syndrome. Muscle cramps and weakness may occur due to other conditions, but they are not primary indicators of compartment syndrome. Redness and itching are also not commonly associated with compartment syndrome.