what are the expected ecg changes in hypokalemia

ATI RN

ATI Capstone Medical Surgical Assessment 2 Quizlet

1. What are the expected ECG changes in hypokalemia?

A. Flattened T waves
B. ST elevation
C. Wide QRS complex
D. Tall T waves

Correct answer: A

Rationale: Flattened T waves are the most common ECG change seen in patients with hypokalemia. Hypokalemia leads to a decrease in serum potassium levels, affecting the repolarization phase of the cardiac action potential. This results in T wave flattening or inversion. ST elevation is typically seen in conditions like myocardial infarction, not in hypokalemia. Wide QRS complex is more associated with hyperkalemia than hypokalemia. Tall T waves are often seen in hyperkalemia, not hypokalemia.

2. What are the signs and symptoms of Increased Intracranial Pressure (IICP)?

A. Irritability, confusion, restlessness
B. Fatigue and SOB
C. Changes in pupillary response
D. Elevated blood pressure

Correct answer: A

Rationale: The correct answer is A: Irritability, confusion, restlessness. These are common signs of Increased Intracranial Pressure (IICP) as they result from the increased pressure on brain tissue. Choices B, C, and D are incorrect. Fatigue and shortness of breath (SOB) are not typical symptoms of IICP. Changes in pupillary response can be seen in other conditions but are not specific to IICP. Elevated blood pressure is not a common sign of IICP.

3. A nurse is providing discharge teaching to a client following a heart transplant. Which of the following information should the nurse include in the teaching?

A. Immunosuppressant medications need to be taken for up to 1 year
B. Shortness of breath might be an indication of transplant rejection
C. The surgical site will heal in 3 to 4 weeks after surgery
D. Begin 45 minutes of moderate aerobic exercise per day following discharge

Correct answer: B

Rationale: The correct answer is B. Shortness of breath is an important sign of transplant rejection. Other manifestations of rejection include fatigue, edema, bradycardia, and hypotension. Choices A, C, and D are incorrect because: A) Immunosuppressant medications are typically required for life, not just up to 1 year. C) The surgical site healing time can vary and may take longer than 3 to 4 weeks. D) Starting a specific exercise regimen should be individualized and guided by healthcare providers; a general recommendation like 45 minutes of exercise per day may not be suitable for all heart transplant recipients.

4. Which ECG change is associated with hyperkalemia?

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

Correct answer: A

Rationale: Flattened T waves are a characteristic ECG change seen in hyperkalemia. Hyperkalemia affects the repolarization phase of the cardiac cycle, leading to T wave abnormalities. Prominent U waves are typically seen in hypokalemia. Elevated ST segments are more indicative of myocardial infarction or pericarditis. Widened QRS complexes are commonly associated with conditions like bundle branch blocks or certain toxicities.

5. A nurse is teaching a client who has type 1 DM about hypoglycemia. Which of the following statements by the client indicates an understanding of the teaching?

A. Exercise reduces the risk for hypoglycemia.
B. I can skip my insulin when I don't eat.
C. I can drink 4 oz of soda if my blood sugar is low.
D. Diabetic pills don't cause hypoglycemia; only insulin does.

Correct answer: C

Rationale: The client can correct any development of hypoglycemia with a quick intake of glucose. The client should have 15 g carbohydrates on hand to treat hypoglycemic episodes, like 4 oz of regular soda.