Page 3 - about pacemakers
P. 3

Q: What is the age and gender of people                  ongoing research and development, the life
         who get their first pacemaker?                        of pacemakers continues to increase while
                                                               their size continues to decrease, making
      A:  The need for pacing may occur at any age.            them more comfortable for patients.
         There are infants born with a short circuit
         between the upper (atrium) and lower               Q: How big are today’s pacemakers?
         (ventricle) chambers of the heart who need
         a pacemaker at birth. Usually, however, the        A:  A typical pacemaker is very small—
         need for pacing increases as people get               often less than 2 inches
         older. Think of the conduction system in the          wide and a quarter-
         heart as being similar to the wiring in a             inch thick, roughly
         house. As a system gets older, some wires             the size of two
         fray and need to be replaced. As people               silver dollars
         get older, the conduction system can                  stacked on top of
         deteriorate. The pacemaker functions as               one another. Once
         a substitute for the wiring system in the             implanted in the
         heart. The need for pacing is divided                 upper chest just
         equally between men and women.                        below the skin near the
                                                               collarbone, it is nearly invisible to the eye.

                                                            Q: Are there different kinds of pacemakers
                                                               for different activity levels?
                               Left
                    Right     Atrium
                   Atrium                                   A:  The variety of today’s pacemakers mimics
                                                               the wide range of lifestyles and activity
                                                               levels of the people who use them. People
                                  Left
                                Ventricle                      who enjoy walking, playing golf, or
                        Right
                       Ventricle                               swimming needn’t worry. Doctors can
                                                               provide patients with
                                                               pacemakers to meet
                                                               their individual
                                                               needs. The type of
                                                               pacemaker that’s
      Q: How long does a pacemaker last? How many              best for a patient
         can a person expect to have in a lifetime?            is decided by the
      A:  Pacemakers can last anywhere from 2 years            physician, based
         to 10 years or more—on the average about              upon why the
         6 years. The longevity depends upon how               pacemaker is
         hard the battery inside the pulse generator           needed, other medical
         has to work. This is affected by how much             conditions, and how often
         energy is required to pace the heart and              the heart is likely to need assistance
         how the system is programmed. Thanks to               from the pacemaker.
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