Cardiac Pacemakers

Authors:
  • BWBruce J. Walz
    Bruce J. Walz
  • RRRonald E. Reder
    Ronald E. Reder
  • JPJohn O. Pastore
    John O. Pastore
  • PLPhilip Littman
    Philip Littman
  • RJRobert Johnson
    Robert Johnson

Abstract
Representative demand cardiac pacemakers were tested with several common radiation therapy devices and ancillary equipment. The experimental set-up essentially duplicated the dosimetric and electroconductive environment of the radiation therapy patient bearing a pacemaker. Observations of pulse width and interval confirmed that pacemaker output was generally not appreciably affected by the simulated treatments. Occasionally, changes were caused by ancillary equipment and start-up of treatment. We conclude that although interference hazards are sometimes seen, radiation therapy is not contraindicated in patients wearing pacemakers. (JAMA234:72-73, 1975)

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