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Experimental Study of Hub Contamination: Effect of a New Connection Device: The I System

First Department of Surgery, Osaka University Medical School, Osaka, Japan

Rchiro Nezu, MD

First Department of Surgery, Osaka University Medical School, Osaka, Japan

Hikaru Matsuda, MD

First Department of Surgery, Osaka University Medical School, Osaka, Japan

Makoto Fuj, MD

Department of Pediatric Surgery, Osaka University Medical School, Osaka, Japan

Sumio Nakai, MD

Department of Pediatric Surgery, Osaka University Medical School, Osaka, Japan

Masafumi Wasa, MD

Department of Pediatric Surgery, Osaka University Medical School, Osaka, Japan

Yoji Takagi, MD

Department of Pediatric Surgery, Osaka University Medical School, Osaka, Japan

Akira Okada, MD

Department of Pediatric Surgery, Osaka University Medical School, Osaka, Japan

Experimental studies of hub contamination of intravenous catheters were done comparing the standard connection method (Luer-Lock connector) with a newly invented connection method (I system). Immersion of the connection sites into a bacteria-containing solution showed no bacterial contamination of the medium in any tubing. The second experiment investigated whether bacterial contamination would occur during a tubing change procedure. A high incidence of bacterial contamination was seen with the Luer-Lock connector, but no bacterial contamination occurred with the I system. These experiments suggest that the use of Luer-Lock connectors is associated with a high risk of bacterial contamination during tubing change, but the I system can prevent contamination during tubing change, which cannot be avoided with Luer-Lock connector. (Journal of Enteral and Parenteral Nutrition 16:178-180, 1992)

Journal of Parenteral and Enteral Nutrition, Vol. 16, No. 2, 178-180 (1992)
DOI: 10.1177/0148607192016002178


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