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Peter P. Tarjan, PhD; William P. Murphy, Jr., MD
Miami, Fla

JAMA. 1970;214(7):1328.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

To the Editor.—

A recent letter to the Editor of THE JOURNAL (212: 1213, 1970) reported on observed effects on patients with implanted cardiac pacers when in the vicinity of certain microwave cooking ovens. As a result of experience in the testing of pacers, the writers are aware of certain precautions that should be taken by those making in vitro measurements to test interference susceptibility, in order to make those tests meaningful.

First, there should be a careful choice in the type of detection system used to determine whether or not the pacer is putting out pulses, and it should not be connected to the pacer by long leads which would act as an antenna, thereby introducing additional interference signals. An AM radio is often used as a detector of pacer pulses, but is not suitable for this application since it is susceptible directly to the same interference that is . . . [Full Text PDF of this Article]

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