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. What are the expected findings in a patient with a thrombotic stroke?

A. Gradual loss of function on one side of the body
B. Sudden loss of consciousness
C. Severe headache and vomiting
D. Loss of sensation in the affected limb

Correct answer: A

Rationale: The correct answer is A: Gradual loss of function on one side of the body. In a thrombotic stroke, a blood clot forms in an artery supplying blood to the brain, leading to reduced blood flow to a specific area of the brain. This results in a gradual onset of neurological deficits, such as weakness, numbness, or paralysis on one side of the body. Choices B, C, and D are incorrect because sudden loss of consciousness, severe headache and vomiting, and loss of sensation in the affected limb are more commonly associated with other types of strokes or medical conditions, not specifically thrombotic strokes. Thrombotic strokes typically present with gradual symptoms due to the gradual blockage of blood flow, leading to a progressive neurological deficit.

3. A nurse is assessing a client who has a sodium level of 122 mEq/L. Which of the following findings should the nurse expect?

A. Decreased deep tendon reflexes
B. Positive Chvostek's sign
C. Hyperactive bowel sounds
D. Dry mucous membranes

Correct answer: A

Rationale: Corrected deep tendon reflexes occur with hyponatremia. Other manifestations of hyponatremia include headache, confusion, lethargy, fatigue, seizures, and muscle weakness. Positive Chvostek's sign is associated with hypocalcemia, hyperactive bowel sounds are not typically related to hyponatremia, and dry mucous membranes are more commonly seen with dehydration.

4. A nurse is providing dietary teaching for a client who has chronic cholecystitis. Which of the following diets should the nurse recommend?

A. Low potassium diet
B. High fiber diet
C. Low fat diet
D. Low sodium diet

Correct answer: C

Rationale: The correct answer is C: Low fat diet. A low-fat diet is recommended for clients with chronic cholecystitis to reduce episodes of biliary colic. High-fat foods can trigger symptoms by causing the gallbladder to contract, leading to pain. Choice A, a low potassium diet, is not specifically indicated for chronic cholecystitis. Choice B, a high fiber diet, though generally healthy, may worsen symptoms in some individuals with cholecystitis due to the increased intestinal gas production. Choice D, a low sodium diet, is not directly related to the management of chronic cholecystitis.

5. A client is scheduled for an electroencephalogram (EEG) and a nurse is providing teaching. Which of the following statements by the client indicates an understanding of the teaching?

A. I should not wash my hair prior to the procedure.
B. I will receive a sedative 1 hour before the procedure.
C. I should avoid eating prior to the procedure.
D. I will be exposed to flashes of light during the procedure.

Correct answer: D

Rationale: The correct answer is D. The nurse should inform the client that flashes of light or pictures are often used during the procedure to assess the brain's response to stimuli. Choices A, B, and C are incorrect because washing hair, receiving a sedative, and avoiding eating are not directly related to the EEG procedure.