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ARRLWeb: Interference: Its Potential Effect on Pacemaker Systems |
 | | The presence of a cardiac pacemaker is considered a contraindication to extracorporeal electrohydraulic shock wave Lithotripsy, due to the possibility of electrical interference from the spark gap used to produce the shock waves, or damage to the pulse generator from the shock waves. |
 | | Potential effects may be due to either the radio frequency signal or the magnet within the phone and could include inhibition or asynchronous pacing when the phone is in close proximity (within 15 cm or 6 inches) to the pulse generator. |
 | | We suggest that pacemaker patients, particularly those who wish to continue working in potentially interference-rich environments, be counseled by their cardiologist on the effects of environmental interference and the likely response of their pacemaker system to the interference, as well as to the most effective ways of avoiding interference in their specific environment. |
| www.arrl.org /tis/info/pcmkr.html (3165 words) |