Waste pollutes clean water, making it undrinkable. Even today in some African cities, there are inadequate water supplies because most of the water is lost in pipe leakages, according to the UN. Today, outdoor air pollution contributes to about two million deaths a year and a host of chronic health problems.
The normal, healthy heart has its own pacemaker that regulates the rate that the heart beats. However, some hearts don't beat regularly. A pacemaker can sometimes correct the problem. A pacemaker is a small device that sends electrical impulses to the heart muscle to maintain a suitable heart rate and rhythm. A pacemaker may also be used to treat fainting spells (syncope), congestive heart failure, and hypertrophic cardiomyopathy.
â¢ Your heart beats too slow or too fast.â¢ Your heart doesnât beat regularly.â¢ Thereâs a block in your heartâs electrical pathways. How does it work? â¢ A pacemaker uses batteries to send electric signals to your heart to help it pump the right way.â¢ The pacemaker is connected to your heart by one or more wires. Tiny electric charges that you canât feel move through the wire to your heart.â¢ Pacemakers work only when needed.