A nurse cares for a patient recovering from mechanical valve replacement surgery. The patient asks, "Why will I need to take anticoagulants for the rest of my life?" What is the best response by the nurse?

Choice A reason: Blood clots form more easily in mechanical replacement valves due to the artificial surface of the valve, which can cause the blood to clot more readily. This increases the risk of thromboembolic events, such as stroke or valve obstruction. Therefore, patients with mechanical valves need to take anticoagulants for life to prevent clot formation and ensure the valve functions effectively.

Choice B reason: The statement that the vein taken from the leg reduces circulation in the leg is incorrect in this context. Vein grafts from the leg are typically used in coronary artery bypass grafting (CABG) surgery, not in valve replacement surgery. Therefore, this explanation does not apply to the patient's situation of needing anticoagulants after valve replacement surgery.

Choice C reason: The idea that the valve replacement surgery left a lot of small clots in the heart and lungs is not accurate. The surgery itself does not leave clots; rather, the ongoing risk of clot formation is due to the presence of the mechanical valve. This risk necessitates lifelong anticoagulation.

Choice D reason: The mechanical valve does not place the patient at a greater risk for a heart attack specifically. The concern with mechanical valves is the increased risk of blood clot formation, which is why anticoagulants are prescribed. Heart attacks are typically caused by blockages in the coronary arteries, which is a different issue.

Choice A reason: Age is a non-modifiable risk factor for coronary artery disease. While it is a significant risk factor, individuals cannot change their age. Modifiable risk factors are those that individuals can alter through lifestyle changes or medical interventions to reduce their risk of developing coronary artery disease.

Choice B reason: Hypertension, or high blood pressure, is a modifiable risk factor for coronary artery disease. By managing blood pressure through lifestyle changes, medications, and regular monitoring, individuals can reduce their risk of developing coronary artery disease. Effective management of hypertension includes reducing sodium intake, maintaining a healthy weight, exercising regularly, and taking prescribed medications.

Choice C reason: Obesity is a modifiable risk factor for coronary artery disease. Individuals can work towards achieving and maintaining a healthy weight through dietary changes, increased physical activity, and behavioral modifications. Losing weight can significantly lower the risk of coronary artery disease by improving blood pressure, cholesterol levels, and overall cardiovascular health.

Choice D reason: Smoking is a major modifiable risk factor for coronary artery disease. Quitting smoking can dramatically reduce the risk of developing coronary artery disease and other cardiovascular conditions. Smoking cessation programs, medications, and support groups can help individuals successfully quit smoking and improve their cardiovascular health.

Choice E reason: Stress is a modifiable risk factor for coronary artery disease. Chronic stress can contribute to the development of coronary artery disease by affecting blood pressure, cholesterol levels, and overall heart health. Managing stress through relaxation techniques, exercise, counseling, and mindfulness practices can help reduce the risk of coronary artery disease.