What happens to the heart's workload during the stable type of angina?

During stable angina, the heart's workload increases with physical exertion. This condition is characterized by chest pain or discomfort that occurs predictably with activities that elevate the heart rate, such as exercise, stress, or heavy lifting. The underlying issue is usually related to coronary artery disease, which leads to a reduced blood supply to the heart muscle.

When physical exertion occurs, the heart requires more oxygen to meet the increased demand. However, constricted or narrowed coronary arteries due to plaque buildup may not supply sufficient oxygen. Consequently, this mismatch between oxygen demand and supply results in angina symptoms. The predictable nature of stable angina means that individuals can often anticipate when they will experience symptoms, allowing them to modify their activities accordingly to avoid angina episodes.

Additionally, rest or reducing physical activity typically decreases the heart's workload and alleviates symptoms, which is why the heart's response to stress or exertion is central to understanding stable angina.