To try and answer this question Iâve collected average electricity prices from 17 countries around the world, and converted them to $/kWh (US). All the data is based on average prices and exchange rates for 2011, and Iâve graphed them in US cents/kWh to keep it tidy.anadian electricity is cheap at 10 US cents per kilowatt hour, which is reflected in their high average electricity usage. US electricity prices at 0.12 $/kWh are also quite cheap internationally.
1 When the heart canât pump enough blood to meet the bodyâs needs, blood flow slows which can cause clots to form. 2  Atrial fibrillation, the most common type of arrhythmia, or irregular heartbeat. 3  Atrial fibrillation can cause blood to pool in the upper chambers of the heart and can cause clots to form.
A heartbeat is caused by an electrical impulse traveling through the heart. The heart's built-in electrical system controls the speed of its pumping. The electrical impulse originates in the sinus node which functions as the heart's natural pacemaker. The sinus node is most often located in the top of the right atrium. The electrical signals travel through the heart tissue causing the atria and ventricles to contract and relax and the blood to be pumped to the body.