what are the early signs of hypokalemia on an ecg

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. 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.

2. What dietary recommendation should be given to a patient with pre-dialysis end-stage kidney disease?

A. Limit phosphorus intake to 700 mg/day
B. Increase sodium intake
C. Restrict protein intake to 0.55-0.60 g/kg/day
D. Eat three large meals per day

Correct answer: A

Rationale: The correct dietary recommendation for a patient with pre-dialysis end-stage kidney disease is to limit phosphorus intake to 700 mg/day. Excess phosphorus can be harmful to individuals with kidney disease as their kidneys are not able to remove it effectively. Choice B is incorrect as increasing sodium intake is generally not recommended for individuals with kidney disease due to its association with high blood pressure. Choice C is also incorrect as protein restriction is a common recommendation for patients with advanced kidney disease, but the range provided is not accurate. Choice D is incorrect as eating three large meals per day may not be suitable for managing the condition.

3. A nurse misreads a glucose level and administers insulin for a blood glucose of 210 mg/dL instead of 120 mg/dL. What is the priority intervention?

A. Monitor for hypoglycemia
B. Monitor for hyperkalemia
C. Administer glucose IV
D. Document the incident

Correct answer: A

Rationale: The correct answer is to monitor for hypoglycemia. In this scenario, the nurse administered insulin based on a misread glucose level, which could lead to hypoglycemia due to excessive insulin action lowering blood glucose levels. Monitoring for hypoglycemia allows for prompt recognition and intervention if blood glucose levels drop significantly. Choice B, monitoring for hyperkalemia, is incorrect as administering insulin would not cause hyperkalemia. Choice C, administering glucose IV, is not appropriate at this time since the patient's blood glucose level is already elevated. Choice D, documenting the incident, is important but not the priority at this moment when patient safety is at risk due to potential hypoglycemia.

4. A nurse is caring for a client who is receiving total parenteral nutrition (TPN). Which of the following findings should the nurse identify as a possible complication of TPN administration?

A. Pitting edema of bilateral lower extremities
B. Hypoactive bowel sounds in all four quadrants
C. Weight is the same as the day before
D. Bilateral posterior lung sounds are diminished

Correct answer: A

Rationale: The correct answer is A: Pitting edema of bilateral lower extremities. Pitting edema can indicate fluid overload, which is a potential complication of TPN administration. Choice B, hypoactive bowel sounds, is more indicative of a gastrointestinal issue rather than a complication of TPN. Choice C, weight remaining the same, is expected to remain stable with proper TPN administration. Choice D, diminished lung sounds, is not directly related to TPN administration and is more suggestive of a respiratory issue.

5. What signs indicate increased intracranial pressure (IICP)?

A. Restlessness, irritability, and confusion
B. Sudden onset of seizures
C. Bradycardia and altered pupil response
D. Loss of consciousness

Correct answer: A

Rationale: Restlessness, irritability, and confusion are early signs of increased intracranial pressure (IICP). These symptoms occur due to the brain's increased pressure within the skull. Sudden onset of seizures (Choice B) is not typically associated with increased intracranial pressure. Bradycardia and altered pupil response (Choice C) are signs of advanced or worsening IICP. Loss of consciousness (Choice D) is a late sign of increased intracranial pressure.