Certified Cardiographic Technician (CCT) Practice exam

Heart failure commonly arises from conditions that place excessive strain on the heart or damage its ability to pump effectively. One of the most prevalent causes is coronary artery disease, which involves the narrowing of the heart's arteries due to the buildup of plaque, limiting blood flow and leading to heart muscle damage. Hypertension, or high blood pressure, is another significant contributor; it forces the heart to work harder than normal, which can lead to thickening of the heart muscle and eventually heart failure.

In contrast, low cholesterol levels and high sleep quality, frequent exercise, and a good diet typically promote heart health rather than contribute to heart failure. Normal blood pressure levels also indicate stability and good cardiovascular function, thereby reducing the risk of developing heart failure. Thus, the combination of coronary artery disease and hypertension effectively captures the primary, detrimental factors leading to heart failure.