hyperkalemia is associated with what changes on an ecg

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. What ECG changes are associated with hyperkalemia?

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

Correct answer: B

Rationale: Hyperkalemia is known to cause ST depression on an ECG. Flattened T waves are more commonly seen in hypokalemia. Prominent U waves are associated with hypokalemia rather than hyperkalemia. Elevated ST segments are not typical findings in hyperkalemia.

2. What are the early signs of hypokalemia on an ECG?

A. Flattened T waves
B. Elevated ST segments
C. Prominent U waves
D. Widened QRS complex

Correct answer: A

Rationale: Flattened T waves are an early sign of hypokalemia on an ECG. In hypokalemia, the T waves may flatten and eventually invert. Elevated ST segments are not typically associated with hypokalemia. Prominent U waves are seen in conditions like hypokalemia, but they are not considered an early sign. A widened QRS complex is more commonly associated with hyperkalemia rather than hypokalemia.

3. What is the first medication to give to a patient with an allergic reaction causing wheezing?

A. Albuterol 3 ml via nebulizer
B. Methylprednisolone 100 mg IV
C. Cromolyn 20 mg via nebulizer
D. Aminophylline 500 mg IV

Correct answer: A

Rationale: The correct answer is A, Albuterol 3 ml via nebulizer. Albuterol is a fast-acting bronchodilator that helps relieve wheezing by relaxing the muscles in the airways, making it the first-line treatment for wheezing caused by bronchospasms in allergic reactions. Methylprednisolone (Choice B) is a corticosteroid used for its anti-inflammatory properties and is typically given after bronchodilators. Cromolyn (Choice C) is a mast cell stabilizer that is used for the prevention of asthma symptoms, not for immediate relief. Aminophylline (Choice D) is a bronchodilator that is less commonly used nowadays due to its narrow therapeutic window and potential for toxicity.

4. A nurse at a provider's office is interviewing a client who has multiple sclerosis and has been taking dantrolene for several months. Which of the following client statements should the nurse identify as an indication that the medication is effective?

A. I don't have muscle spasms as frequently.
B. I haven't gotten any colds, even though it is flu season.
C. I feel like my nerve pain has improved.
D. It is easier to urinate now.

Correct answer: A

Rationale: The correct answer is A: 'I don't have muscle spasms as frequently.' Dantrolene is a medication that relaxes skeletal muscles and is commonly prescribed to treat muscle spasms in clients with multiple sclerosis. Therefore, a reduction in muscle spasms frequency would be an indication of the medication's effectiveness. Choices B, C, and D are incorrect because dantrolene is not indicated for preventing colds, improving nerve pain, or easing urination. The focus should be on the medication's intended purpose, which is to address muscle spasms in clients with multiple sclerosis.

5. What should be monitored in a patient with diabetes insipidus?

A. Monitor urine specific gravity for values below 1.005
B. Monitor for increased thirst
C. Monitor serum albumin levels
D. Monitor blood pressure closely

Correct answer: A

Rationale: In a patient with diabetes insipidus, monitoring urine specific gravity for values below 1.005 is crucial. Low urine specific gravity indicates excessive water loss, a key characteristic of diabetes insipidus. Monitoring for increased thirst (choice B) may be a symptom presented by the patient, but it does not directly reflect the condition's severity. Monitoring serum albumin levels (choice C) is not typically associated with diabetes insipidus. Monitoring blood pressure closely (choice D) is not a primary concern in diabetes insipidus unless severe dehydration leads to hypotension.