Which of the following is considered a major risk factor for cardiac events duringsurgery? *(-/1 Point)13.Age > 70 yearsEmergency surgeryUnstable anginaChronic liver impairment

All of the options listed can be considered major risk factors for cardiac events during surgery. However, the most significant among these are:

1. Age > 70 years: As we age, the risk of cardiac events increases. This is due to a variety of factors, including the natural aging of the heart and blood vessels, as well as the increased likelihood of having other conditions that can affect the heart, such as high blood pressure or diabetes.

2. Emergency surgery: Emergency surgeries are often more stressful for the body and come with a higher risk of complications, including cardiac events. This is due to a variety of factors, including the urgency of the situation, the potential for blood loss, and the fact that there may not be enough time to fully evaluate the patient's heart health before the surgery.

3. Unstable angina: This is a condition where the blood supply to the heart is suddenly and severely reduced, causing severe chest pain. This can be a sign that the heart is not getting enough oxygen, which can lead to a heart attack. If a person with unstable angina has surgery, the stress of the surgery can trigger a cardiac event.

4. Chronic liver impairment: The liver plays a crucial role in the body, including in the regulation of blood clotting. If the liver is not functioning properly, this can increase the risk of cardiac events, especially during surgery when the risk of bleeding and blood clots is higher.

So, all of these are considered major risk factors for cardiac events during surgery.

All of the options listed can be considered major risk factors for cardiac events during surgery.

1. Age > 70 years: As we age, our risk for heart disease and other medical conditions increase. This is especially true for those over the age of 70.

2. Emergency surgery: Emergency surgeries are often more stressful and risky than planned surgeries. This added stress can increase the risk of cardiac events.

3. Unstable angina: This is a condition where the heart doesn't get enough blood and oxygen, often due to a blockage of the coronary arteries. This can significantly increase the risk of a heart attack during surgery.

4. Chronic liver impairment: The liver plays a crucial role in the body's metabolic processes, including those that involve the heart. Chronic liver impairment can therefore increase the risk of cardiac events during surgery.

So, all of these are considered major risk factors for cardiac events during surgery.