A design approach is a general philosophy that may or may not include a guide for specific methods. Some are to guide the overall goal of the design. Other approaches are to guide the tendencies of the designer. A combination of approaches may be used if they don't conflict.
Bradycardia can be caused by: 1  Changes in the heart that are the result of aging. 2  Diseases that damage the heart's electrical system. These include coronary artery disease, heart attack, and infections such as endocarditis and myocarditis. 3  Conditions that can slow electrical impulses through the heart.
The opposite of bradycardia is tachycardia, when the heart rate is over 100 beats per minute. The heartbeat is controlled by an electrical system that signals the heart muscle to contract, or âsqueeze,â pumping blood to the rest of the body.Bradycardia happens when the system slows or blocks these signals.he opposite of bradycardia is tachycardia, when the heart rate is over 100 beats per minute. The heartbeat is controlled by an electrical system that signals the heart muscle to contract, or âsqueeze,â pumping blood to the rest of the body.