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Journal of the American Academy of Dermatology
Volume 52, n° 6
pages 988-990 (juin 2005)
Doi : 10.1016/j.jaad.2005.01.131
accepted : 27 January 2005
REPORTS

Sterility of stored nonanimal, stabilized hyaluronic acid gel syringes after patient injection
 

Supriya G. Bellew, MD a, Karen C. Carroll, MD b, Margaret A. Weiss, MD a, c, Robert A. Weiss, MD a, c,
a From the Maryland Laser, Skin and Vein Institute, Hunt Valley 
b Division of Medical Microbiology 
c Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore 

Correspondence to: Robert A. Weiss, MD, Director, Maryland Laser, Skin and Vein Institute, 54 Scott Adam Rd, Suite 301, Hunt Valley, MD 21030.

Hunt Valley and Baltimore, Maryland

Abstract
Background

Restylane (Restylane; Q-Medical, Uppsala, Sweden) is a nonanimal stabilized hyaluronic acid (NASHA) that has become increasingly popular for soft tissue augmentation and volume correction because of its greater longevity and lower rate of hypersensitivity reactions when compared with collagen. Despite manufacturer warnings, the remaining material in the syringe is commonly stored for subsequent treatment in the same patient.

Objective

Our purpose was to determine the incidence of bacterial contamination of NASHA stored after initial patient injection.

Methods

After use of a specific sterile sequence, NASHA from previously used syringes stored at room temperature for 2 to 9 months was cultured under aerobic (n=20) and anaerobic conditions (n=10).

Results

No bacteria were cultured from any of the samples.

Limitations

Limitations of this study include sample size and storage period for a maximum of 9 months.

Conclusions

NASHA remaining in syringes after patient injection was not contaminated with bacteria. Our study raises the possibility that re-use of the remaining portion of material in the syringe may be safe and is more economical than discarding it.

The full text of this article is available in PDF format.

 Funding sources: None.
Conflicts of interest: None.
Reprints not available from the authors.



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