Take the D scale for example. Start on the D note at the second fret and move up the scale like this to the next D: If you play this same pattern up two frets (so the E is the first note you play), youâll have an E major scale. The same goes for any other pattern you can spot in these scale maps.
A pacemaker signals the heart to beat when the heartbeat is too slow or irregular. A pulse generator is a small metal case that contains electronic circuitry with a small computer and a battery that regulate the impulses sent to the heart.
Description of the procedure. A pacemaker is a small battery-powered electronic device that is surgically implanted, usually in your chest, to monitor and regulate abnormal heart rate and rhythm (arrhythmia). A pacemaker consists of a pulse generator and leads. The generator produces electrical signals and the leads (insulated wires) transmit the signals to the heart.