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. A nurse misreads a glucose reading and administers insulin for a blood glucose of 210 instead of 120. What should the nurse monitor the patient for?

A. Monitor for hyperglycemia
B. Monitor for signs of hypoglycemia
C. Administer glucose IV
D. Document the incident

Correct answer: B

Rationale: The correct answer is B: Monitor for signs of hypoglycemia. The nurse should monitor the patient for hypoglycemia due to the administration of excess insulin. Administering insulin for a blood glucose level of 210 instead of 120 can lead to a rapid drop in blood sugar levels, causing hypoglycemia. Option A is incorrect as hyperglycemia is high blood sugar, which is unlikely in this scenario. Option C is incorrect as administering glucose IV would worsen the hypoglycemia. Option D is not the immediate priority; patient safety and monitoring for adverse effects take precedence.

3. 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.

4. What is the expected ECG finding in a patient with hypokalemia?

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

Correct answer: A

Rationale: The correct answer is A: Flattened T waves. In hypokalemia, there is a decrease in serum potassium levels, which can lead to various ECG changes. One of the classic ECG findings associated with hypokalemia is the presence of flattened T waves. These T wave abnormalities are typically seen in multiple leads. Choice B, elevated ST segments, is not a typical ECG finding in hypokalemia. Choice C, widened QRS complexes, is more commonly associated with hyperkalemia rather than hypokalemia. Choice D is redundant and not a standard way of describing ECG findings.

5. What should be the priority action when a patient is admitted with chest pain from acute coronary syndrome?

A. Administer sublingual nitroglycerin
B. Obtain IV access
C. Check cardiac enzymes
D. Administer aspirin

Correct answer: A

Rationale: The correct answer is to administer sublingual nitroglycerin. This is the priority action in treating chest pain associated with acute coronary syndrome as it helps to dilate blood vessels, improve blood flow to the heart, and reduce cardiac tissue damage. Administering nitroglycerin is crucial in managing the symptoms and potential complications of acute coronary syndrome. Obtaining IV access (Choice B) is important for administering medications and fluids but does not address the immediate symptom of chest pain. Checking cardiac enzymes (Choice C) and administering aspirin (Choice D) are essential steps in the management of acute coronary syndrome, but they should follow the administration of nitroglycerin to address the immediate symptom and improve blood flow to the heart.