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).
A pacemaker is an electronic device that provides an electrical signal to make the heart beat when itâs own, built-in pacemakers fail. The anatomical, built-in pacemakers provide whatâs called the âintrinsicâ rhythm, and they can be disrupted by various conditions â ischemia for example, or by an MI.acemakers can be either temporary or permanent. The temporary pacemakers that we see in the MICU are made up of a control box and one single output wire leading to the inner wall of the RV (thus called a ventricular wire, or âV-wireâ), and provide simple rate control by pacing the ventricles.