Sick sinus syndromeis due to defective sinus nodes. The sinus nodes are the natural pacemakers in the heart. Heart rhythms will beat too quickly or, more commonly, too slowly when malfunctioning. Conduction blockis a heart rhythm condition caused by a breakdown in the flow of the electrical pu...
The heart is the main engine of the body. During the aging process, the heart's pumping ability reduces decreases due to reduced muscle mass. The amount of blood pumped is less per beat as a result of the aging process, if all other factors remain unchanged. Also as you age, your body...