Windows Movie Maker is a fun and easy to use video editing program that allows you to make home movies, automated photo albums and business presentations. It is included as part of the Windows XP operating system. Version Version 2.1 of Windows Movie Maker can be downloaded for free, to upgrade your existing version.
1 When the natural pacemaker is defective, the heartbeat may be too fast, too slow or irregular. 2  Rhythm problems also can occur because of a blockage of your heart's electrical pathways. 3  The artificial pacemaker's pulse generator sends electrical impulses to the heart to help it pump properly. Your heartbeat is sometimes normal and sometimes too fast or too slow. 2  The sinoatrial (SA) node or sinus node is the heart's natural pacemaker. 3  It's a small mass of specialized cells in the top of the right atrium (upper chamber of the heart).
Having a pacemaker fitted can greatly improve your quality of life if you have problems with your heart rhythm, and the device can be lifesaving for some people. Pacemaker implantation is one of the most common types of heart surgery carried out in the UK.f the pacemaker senses that your heart has missed a beat or is beating too slowly, it sends signals at a steady rate. If it senses that your heart is beating normally by itself, it does not send out any signals.