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.
It depends on such factors as. 1  How often a given patient uses the pacemaker. 2  How well it is programmed. 3  How good is the connection or electrical interface between the lead and the muscle. 4  What medications the patient is on, since this may play an important role in how often the pacemaker is required to fire, and how much energy it must use. 5  Wheth