To the Editor:—
Loss of transducer holders for invasive pressure monitoring to the postanesthesia care unit or intensive care unit is a frequent occurrence in our institution. We have developed the following solution to this problem. With the transducer holder attached to an intravenous pole, the small black screws securing the transducer holder to its mounting clamp are removed and replaced with set screws (size and thread:#10-32, 3/8 in long), thus preventing separation of the transducer holder from its support bracket. A hexagonal (Allen) wrench (3/32 in) is used to tighten the set screws.
Nylon-coated cable (3/16-in diameter) is threaded circumferentially around the intravenous pole and through the transducer support (fig. 1),
and is crimped using a loop/sleeve connector and Vise-Grips (Pedersen Manufacturing Co., De Witt, NE), or a crimping tool. (All items are available through the catalog from Small Parts, Inc., Miami Lakes, FL)
The arrangement described prevents removal of the transducer holder from the intravenous pole while allowing vertical movement of the transducer to accommodate different operating room table heights.