Comparison of the hydrophilic guidewire in double- and single-wall entry needles: potential hazards

Using an in vitro model, the potential hazard of using a new plastic-coated guidewire directly through both beveled, single-wall and nonbeveled, double-wall arterial puncture needles was assessed. Guidewire withdrawal directly through both types of needles resulted in either scraping and/or shearing of the plastic coating of the guidewire, leading to potential embolic debris. This problem was more significant when the guidewire was withdrawn through the beveled needle, in comparison to the nonbeveled type. Extreme caution should be used when using plastic-coated guidewires directly through metallic arterial entry needles.