what ecg changes are expected in hypokalemia

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. What ECG changes are expected in hypokalemia?

A. Flattened T waves on ECG
B. Prominent U waves on ECG
C. Widened QRS complexes on ECG
D. ST elevation on ECG

Correct answer: A

Rationale: In hypokalemia, flattened T waves are a common ECG finding due to the decreased extracellular potassium affecting repolarization. Prominent U waves are typically seen in hypokalemia as well, but flattened T waves are the more specific and early ECG change. Widened QRS complexes are associated with hyperkalemia, not hypokalemia. ST elevation is often seen in conditions like myocardial infarction, pericarditis, or early repolarization syndrome, not specifically in hypokalemia.

2. What symptoms are associated with a thrombotic stroke?

A. Gradual loss of function on one side of the body
B. Sudden loss of consciousness
C. Loss of motor function with nausea
D. Severe headache and vomiting

Correct answer: A

Rationale: A thrombotic stroke presents with a gradual loss of function on one side of the body due to a clot blocking blood flow to the brain. This gradual onset distinguishes it from a hemorrhagic stroke with sudden symptoms like loss of consciousness (Choice B), and from other conditions like migraine, which may present with severe headache and vomiting (Choice D). Nausea (Choice C) is not typically a primary symptom associated with a thrombotic stroke.

3. A patient with chronic kidney disease may require dietary restrictions. Which of the following diets should the healthcare provider prescribe?

A. Low sodium diet
B. Potassium restricted diet
C. High phosphorus diet
D. High protein diet

Correct answer: B

Rationale: Patients with chronic kidney disease often require a potassium-restricted diet to help manage their electrolyte levels. Excessive potassium intake can be harmful to individuals with compromised kidney function. While monitoring sodium intake is also important for these patients, a low sodium diet is not specifically indicated in the question. High phosphorus diet and high protein diet are not recommended for individuals with chronic kidney disease as they can further stress the kidneys and worsen the condition.

4. A nurse is assessing a client who has a heart rate of 40/min. The client is diaphoretic and has chest pain. Which of the following medications should the nurse plan to administer?

A. Lidocaine
B. Adenosine
C. Atropine
D. Verapamil

Correct answer: C

Rationale: The correct answer is C: Atropine. The client's presentation of bradycardia, diaphoresis, and chest pain indicates reduced cardiac output, requiring intervention to increase the heart rate. Atropine is used to treat bradycardia by blocking cardiac muscarinic receptors, thus inhibiting the parasympathetic nervous system. Lidocaine (Choice A) is used for ventricular arrhythmias, not bradycardia. Adenosine (Choice B) is used for supraventricular tachycardia, not bradycardia. Verapamil (Choice D) is a calcium channel blocker used for certain arrhythmias and hypertension, but not for increasing heart rate in bradycardia.

5. What dietary recommendations should be given to a patient with GERD?

A. Avoid mint and spicy foods
B. Eat large meals before bed
C. Increase fluid intake during meals
D. Drink milk as a snack

Correct answer: A

Rationale: The correct dietary recommendation for a patient with GERD is to avoid mint and spicy foods. These foods can trigger symptoms of GERD and lead to acid reflux. Choice B is incorrect because eating large meals before bed can exacerbate GERD symptoms by increasing the likelihood of acid reflux during sleep. Choice C is incorrect as increasing fluid intake during meals can worsen GERD symptoms by distending the stomach, leading to increased pressure on the lower esophageal sphincter. Choice D is also incorrect because while milk may provide temporary relief for some individuals, it is not a recommended long-term solution for managing GERD.