# RFID 100% Accurate in Surgical Sponge Tracking Test

A blinded clinical trial of radio frequency identification chips resulted in an accuracy rate far better than traditional counting or use of radiographs for tracking surgical sponges.

1 comments on "RFID 100% Accurate in Surgical Sponge Tracking Test"
Jonathan (3/11/2011 at 4:28 PM)

One important statistic you ommitted is the rate at which surgical sponges are retained in patients as a function of the usage of surgical sponges. I suspect this is some small number per million, i.e. for every million sponges used five are retained in patients. Given this rate of retention we can then do a cost benefit analysis. Cost per sponge retained = \$200,000 Sponges retained per million sponges used = 5 Cost per million sponges used = 5 * \$200,000 = \$1,000,000. Cost per sponge = \$1,000,000 / 1,000,000 = \$1 Now assume the RFID sponge retention rate is zero per million sponges used. (Perfection is unlikely but it makes the math easy.) If the RFID sponge costs \$1 more than an orginary sponge it will not be cost effective. If the RFID sponge costs les than an ordinary sponge it will be cost effective.

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