Given the electrocardiogram tracing below for a client who is unresponsive and without a pulse, what should be the nurse’s priority action?

Choice A rationale
Promoting a diet high in saturated fats is not a recommended strategy for preventing cardiovascular disease. Saturated fats can raise the level of cholesterol in your blood and increase your risk of heart disease and stroke.
Choice B rationale
Advising smoking cessation is a crucial intervention in preventing cardiovascular disease. Chemicals in tobacco can damage the heart and blood vessels, leading to narrowing of the arteries (atherosclerosis). Atherosclerosis can ultimately lead to a heart attack.
Choice C rationale
Regular blood pressure monitoring is important because high blood pressure is a significant risk factor for heart disease. It can cause the arteries that supply blood to your heart muscle to harden and narrow, leading to a heart attack.
Choice D rationale
Regular cholesterol screenings are essential because high levels of cholesterol can lead to the buildup of plaques in your arteries, increasing your risk of heart disease.
Choice E rationale
Encouraging regular physical exercise is a key strategy in preventing cardiovascular disease. Regular exercise helps control your weight and reduce your chances of developing other conditions that may put a strain on your heart, such as high blood pressure, high cholesterol, and diabetes.

Choice A rationale
While palpating the liver edge can provide information about liver health and potential fluid accumulation, it is not typically a priority assessment for a patient taking Digoxin (Lanoxin), Furosemide (Lasix), and Captopril.
Choice B rationale
A serum potassium level of 3.0 mEq/L is low (hypokalemia). This is a critical finding because both Digoxin and Furosemide can cause hypokalemia. Hypokalemia increases the risk of digoxin toxicity, which can lead to serious cardiac arrhythmias.
Choice C rationale
While weight gain may indicate worsening heart failure, a gain of 2 pounds over 3 days is not typically considered significant. However, any sudden or unexplained weight gain should be reported to the healthcare provider.
Choice D rationale
Presence of 1+ to 2+ edema in the feet and ankles could indicate worsening heart failure, but it is not as immediately concerning as hypokalemia in a patient taking Digoxin and Furosemide.