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 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.

3. What are the dietary recommendations for a patient with GERD?

A. Avoid mint and spicy foods
B. Eat large meals before bedtime
C. Consume liquids with meals
D. Avoid NSAIDs

Correct answer: A

Rationale: The correct answer is to avoid mint and spicy foods for a patient with GERD. These foods can increase gastric acid secretion and worsen symptoms of GERD. Choice B is incorrect because eating large meals before bedtime can exacerbate GERD symptoms due to increased gastric pressure when lying down. Choice C is also incorrect as consuming liquids with meals can lead to increased gastric distention, potentially triggering GERD symptoms. Choice D, avoiding NSAIDs, though important for some patients with GERD due to their potential to irritate the stomach lining, is not a general dietary recommendation for all GERD patients.

4. What is an escharotomy and why is it performed?

A. A surgical incision made to improve circulation in burn injuries
B. A procedure to remove dead tissue from a wound
C. A procedure to remove excess fluid from the lungs
D. A procedure to relieve pain from burns

Correct answer: A

Rationale: An escharotomy is a surgical procedure involving an incision through the eschar (dead tissue) to relieve pressure in burn injuries. It is performed to improve circulation to the affected area, prevent further damage, and restore blood flow. Choice B is incorrect because an escharotomy is not primarily focused on removing dead tissue but rather on relieving pressure. Choice C is incorrect as it describes a procedure related to pulmonary issues, not burn injuries. Choice D is incorrect because while pain relief may be a result of an escharotomy, it is not the primary purpose of the procedure.

5. What is the preferred electrical intervention for a patient with ventricular tachycardia with a pulse?

A. Synchronized cardioversion
B. Defibrillation
C. Pacing
D. Medication administration

Correct answer: A

Rationale: The correct answer is A: Synchronized cardioversion. In ventricular tachycardia with a pulse, synchronized cardioversion is the preferred electrical intervention. Synchronized cardioversion is used to treat tachyarrhythmias where there is a pulse present. Defibrillation (choice B) is used in emergencies for pulseless ventricular tachycardia or ventricular fibrillation. Pacing (choice C) is more suitable for bradycardias or certain conduction abnormalities. Medication administration (choice D) may be used in stable cases or as an adjunct to other treatments, but synchronized cardioversion is the primary intervention for ventricular tachycardia with a pulse.