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10 April 2019 : Original article  

Donor-Dependent Factors Influencing Contamination Rates of Conjunctival Swabs of Human Donor Eyes

Tobias Röck1ABCDEF*, Gunnar Blumenstock2CDE, Karl Ulrich Bartz-Schmidt1CDE, Matthias Bramkamp3CDE, Johanna Landenberger1ABCDE, Daniel Röck1ABCDEF

DOI: 10.12659/AOT.912266

Ann Transplant 2019; 24:191-198

Abstract

BACKGROUND: This study investigated the effect of donor-dependent factors on contamination rates of conjunctival swabs of human donor eyes.

MATERIAL AND METHODS: From July 2015 to September 2017 a total of 1008 conjunctival swabs from 504 consecutive human donor eyes were analyzed. Cross-tabulation, chi-squared tests, and Fisher’s exact tests were used to evaluate the effect of donor-dependent factors on contamination rates of conjunctival swabs.

RESULTS: The mean conjunctival swabs contamination rate was 28.4%. Donors with the diagnosis of carcinoma or metastases were associated with an increased conjunctival swab contamination rate [odds ratio (OR)=1.8, 95% confidence interval (CI)=1.2–2.6, p=0.007; OR=1.7, 95% CI=1.1–2.6, p=0.016; respectively]. However, the age, sex, diagnosis of diabetes mellitus, and donors who received chemotherapy did not significantly increase the conjunctival swab contamination risk.

CONCLUSIONS: Donors with the diagnosis of a carcinoma or metastases seemed to be predisposed to increased conjunctival swab contamination risk.

Keywords: Cornea, Corneal Transplantation, Decontamination, Eye Banks, Microbiology, Tissue Banks, Adolescent, Aged, 80 and over, Conjunctiva, Endophthalmitis, Microbiological Techniques, Neoplasms, Surgical Wound Infection, Tissue Donors, young adult

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Annals of Transplantation eISSN: 2329-0358
Annals of Transplantation eISSN: 2329-0358