A typical ECG in AF shows no P waves and an irregular ventricular rate. AF is often treated with medications to slow the heart rate to a near normal range (known as rate control) or to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can also be used to convert AF to a normal sinus rhythm and is often used emergently if the person is unstable.
How does a water tower work? Water towers provide extra water storage for a town's water supply. They hold about a day's worth of water, so if the town's pumps fail (like during a power outage), the water tower acts as a backup water supply.
Most water towers are pretty simple machines. Clean, treated water is pumped up into the tower, where itâs stored in a large tank that might hold a million or so gallonsâenough water to run that particular city for a day. When the region needs water, water pumps utilize the pull of gravity to provide high water pressure.