Which ECG change is associated with hyperkalemia?

A. Flattened T waves

B. Prominent U waves

C. Elevated ST segments

D. Widened QRS complex

Correct Answer: A
Rationale: Flattened T waves are a characteristic ECG change seen in hyperkalemia. Hyperkalemia affects the repolarization phase of the cardiac cycle, leading to T wave abnormalities. Prominent U waves are typically seen in hypokalemia. Elevated ST segments are more indicative of myocardial infarction or pericarditis. Widened QRS complexes are commonly associated with conditions like bundle branch blocks or certain toxicities.

When caring for a patient with a burn injury, what is the priority intervention?

• A. Monitor the burn area for infection
• B. Administer IV fluids
• C. Debride the burn area
• D. Apply a dry dressing

Correct Answer: A
Rationale: The priority intervention when caring for a patient with a burn injury is to monitor the burn area for infection. This is crucial to prevent further complications such as sepsis. While administering IV fluids is important for fluid resuscitation, it is not the top priority compared to preventing infection. Debriding the burn area and applying a dry dressing are necessary interventions for wound care, but ensuring there is no infection takes precedence to avoid sepsis and other serious complications.

A client has a right-sided pneumothorax, and a chest tube is inserted. Which finding indicates that the chest drainage system is functioning correctly?

• A. Gentle bubbling in the suction chamber
• B. Crepitus around the insertion site
• C. Constant bubbling in the water seal chamber
• D. Absence of breath sounds on the right side

Correct Answer: A
Rationale: In a chest drainage system, gentle bubbling in the suction chamber indicates proper functioning, showing that the system is connected and working effectively to remove air or fluid from the pleural space. Crepitus around the insertion site (Choice B) suggests subcutaneous emphysema, not chest tube functionality. Constant bubbling in the water seal chamber (Choice C) indicates an air leak. Absence of breath sounds on the right side (Choice D) is indicative of the pneumothorax, not the chest tube function.

What dietary teaching should be provided to a patient with GERD?

• A. Avoid mint and pepper
• B. Consume liquids with meals
• C. Increase fluid intake with meals
• D. Eat large meals before bed

Correct Answer: A
Rationale: The correct dietary teaching for a patient with GERD is to avoid mint and pepper. Mint and pepper can trigger reflux symptoms and increase gastric acid secretion, exacerbating GERD. Choices B and C are not recommended for patients with GERD as consuming liquids with meals and increasing fluid intake during meals can contribute to reflux by distending the stomach. Choice D, eating large meals before bed, can also worsen GERD symptoms by increasing pressure on the lower esophageal sphincter and promoting reflux.

What are the signs of compartment syndrome?

• A. Unrelieved pain, pallor, pulselessness
• B. Muscle weakness, hyporeflexia
• C. Pins-and-needles sensation, swelling
• D. Severe swelling and tightness in the affected extremity

Correct Answer: A
Rationale: The correct signs of compartment syndrome include unrelieved pain, pallor, and pulselessness due to increased pressure within a muscle compartment. Choice B, muscle weakness, and hyporeflexia are not typical signs of compartment syndrome. Choice C, pins-and-needles sensation and swelling, are not specific signs of compartment syndrome. Choice D, severe swelling and tightness in the affected extremity, could be seen in compartment syndrome but are not the primary signs.