what ecg changes are seen in hypokalemia

ATI RN

ATI Capstone Medical Surgical Assessment 1 Quizlet

1. What ECG changes are seen in hypokalemia?

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

Correct answer: A

Rationale: The correct answer is A: Flattened T waves on the ECG. Flattened T waves are an early indicator of hypokalemia on an ECG. Choice B, Elevated ST segments, is not typically seen in hypokalemia but can be a sign of myocardial infarction. Choice C, Widened QRS complex, is more commonly associated with hyperkalemia. Choice D, Prominent U waves, is typically associated with hypokalemia, but flattened T waves are considered a more specific and early sign.

2. What is the priority nursing action when a patient with chest pain presents with possible acute coronary syndrome?

A. Administer sublingual nitroglycerin
B. Obtain IV access
C. Check the patient's cardiac enzymes
D. Administer aspirin

Correct answer: A

Rationale: The priority nursing action when a patient with chest pain presents with possible acute coronary syndrome is to administer sublingual nitroglycerin. Sublingual nitroglycerin helps dilate blood vessels, reducing cardiac workload, and improving blood supply to the heart muscle, thus relieving pain and enhancing blood flow to the heart. While obtaining IV access is important for administering medications and fluids, it is not the priority over addressing pain and improving blood flow. Checking the patient's cardiac enzymes is crucial for diagnosis and ongoing management but not the immediate priority when the patient is in pain. Administering aspirin is also a vital intervention in acute coronary syndrome, but in this scenario, it is not the priority action compared to providing immediate pain relief and enhancing blood flow to the heart.

3. A patient reports abdominal cramping after enema administration. What action should the nurse take to relieve the discomfort?

A. Lower the height of the solution container
B. Increase the flow of enema solution
C. Remove the enema tubing
D. Stop the procedure

Correct answer: A

Rationale: The correct action to relieve abdominal cramping after enema administration is to lower the height of the solution container. This adjustment slows down the flow rate of the enema solution, which can help reduce discomfort by decreasing the pressure on the patient's abdomen. Increasing the flow of the enema solution (Choice B) would exacerbate the cramping by introducing more solution quickly. Removing the enema tubing (Choice C) is not necessary to address the cramping, and stopping the procedure (Choice D) may not be needed if adjusting the height of the solution container can resolve the issue.

4. What is the priority intervention when a patient experiences abdominal cramping during enema administration?

A. Lower the height of the enema solution container
B. Stop the procedure and remove the tubing
C. Continue the enema at a slower rate
D. Increase the flow of the enema solution

Correct answer: A

Rationale: The correct answer is to lower the height of the enema solution container. This action can help relieve abdominal cramping by slowing the flow of the enema, reducing discomfort for the patient. Choice B, stopping the procedure and removing the tubing, is not the priority as adjusting the height of the container can often resolve the issue without needing to stop the procedure completely. Choice C, continuing the enema at a slower rate, may not address the immediate discomfort experienced by the patient. Choice D, increasing the flow of the enema solution, can exacerbate the cramping and should be avoided.

5. 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.