Question of the Month with Comment
MedSun: Newsletter #18, November 2007

The September Question of the Month is featured below, along with a recently submitted Comment.

Question:
Findings of a study by J.L. Tri, M.S.E.E.; R.P. Severson, CBET; L.K. Hyberger, M.A., CCRC; and D.L. Hayes, M.D., published in Mayo Clinic Proceedings [82(3):282-285], showed that no problems were found during 300 tests of two different telephone technologies from different carriers. From February through June 2006, the cell or mobile phones were switched on near 192 medical devices in 75 patient rooms. The incidence of clinically important interferences was 0 percent.

In light of these findings, has your facility changed the cell phone policy? Would you be willing to share these changes?

Comment:
The provisional PDF of "Interference by New-Generation Mobile Phones on Critical Care Medical Equipment," an article by E.J. van Lieshout, S.N. van der Veer, R. Hensbroek, J.C. Korevaar, M.B. Vroom, and M.J. Schultz, to be published in the September issue of Critical Care 2007. In the article, the researchers conclude that, "Critical care equipment is vulnerable to EMI by new-generation wireless telecommunication technologies with median distances of about 3 cm. The policy to keep mobile phones ‘1 meter’ from the critical care bedside in combination with easily accessed areas of unrestricted use still seems warranted."

Additional Information:

Interference by New-Generation Mobile Phones on Critical Care Medical Equipment

http://ccforum.com/content/pdf/cc6115.pdf


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