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.
Children fighting with water guns. A water gun (or water pistol, water blaster, or squirt gun) is a type of toy gun designed to shoot water. Similar to water balloons, the primary purpose of the toy is to soak another person in a game such as water warfare. Traditionally, water guns have worked on the same principle as a spray bottle.