[Analysis of Factors Influencing the Suitability of Donor Corneas in the LIONS Cornea Bank Saar-Lor-Lux, Trier/Westpfalz from 2006 to 2016].

Abstract:

BACKGROUND AND PURPOSE:With the discrepancy between availability and demand for corneal donors, the purpose of our study was to identify significant factors influencing the suitability and affecting the main reasons for discarding organ-cultured corneas. We thus aimed to minimise the percentage of unsuitable corneas in the long term. PATIENTS AND METHODS:4140 corneas of 2083 donors were analysed between 2006 and 2016. The factors included age, gender and medical history of the donors as well as storage factors such as post-mortem times. The data was recruited in a Microsoft Access database and evaluated with SPSS 20.0, using logistic regression analyses. In a multiple regression model, six factors influencing the suitability of the donor tissue were analysed. All corneas that did not meet the criteria for elective keratoplasty were considered unsuitable. RESULTS:A high donor age of > 80 years was found to be a significantly negative factor on the suitability of the cornea (p = 0.001) compared to the reference group of donors < 40 years. Previous cataract surgery (p < 0.001) also significantly reduced suitability. Male corneas were significantly less suitable than female corneas (p = 0.028). Hypertension (p = 0.612), chemotherapy (p = 0.745) or diabetes mellitus (p = 0.321) did not significantly affect the suitability. Sepsis (p = 0.026) and multiorgan failure (p < 0.001) as cause of death resulted in significantly higher discarding rates due to contamination of the culture medium. Corneas in which the blood sample collection took more than 12 h from death of the donor had to be discarded significantly more frequently due to a positive donor serology. CONCLUSIONS:Factors such as a history of cataract surgery and high donor age reduced the suitability of corneal donor tissue in organ culture. Diabetes, arterial hypertension and chemotherapy in the donor history did not statistically significantly affect the suitability of donor tissue. Causes of death such as sepsis or multi-organ failure increased the contamination rate of the medium. Post-mortem blood collection after more than 12 h should be avoided due to increased positive serology results. HINTERGRUND UND ZIEL DER STUDIE:Vor dem Hintergrund des Missverhältnisses zwischen Hornhautverfügbarkeit und -bedarf war das Ziel der Studie, signifikante Einflussfaktoren auf die Eignung sowie die Verwerfungsgründe von kornealem Spendergewebe zu eruieren und damit die Rate verworfener Hornhäute langfristig zu reduzieren. PATIENTEN UND METHODEN:4140 Hornhäute von 2083 Spendern wurden zwischen 2006 und 2016 analysiert. Die untersuchten Einflussgrößen umfassten das Alter, das Geschlecht und die medizinische Vorgeschichte der Spender und Prozessierungsfaktoren wie die Post-mortem-Zeit. Die Daten wurden in eine Microsoft-Access-Datenbank übertragen und mittels logistischer Regressionsanalysen mit SPSS 20.0 statistisch ausgewertet. In einem multiplen Regressionsmodell wurden 6 Einflussfaktoren auf die Eignung des Spendergewebes analysiert. Alle Hornhäute, die nicht für eine elektive Keratoplastik infrage kamen, galten hierbei als ungeeignet. ERGEBNISSE:Ein hohes Spenderalter > 80 Jahre erwies sich im Vergleich zur Referenzgruppe der Spender < 40 Jahre als signifikant negative Einflussgröße auf die Eignung der Hornhaut (p = 0,001). Auch eine vorangegangene Kataraktoperation minderte signifikant die Eignung (p < 0,001). Männliche Hornhäute waren signifikant weniger geeignet als weibliche Hornhäute (p = 0,028). Ein Hypertonus in der Spendervorgeschichte (p = 0,612), eine vorangegangene Chemotherapie (p = 0,745) oder ein Diabetes mellitus (p = 0,321) zeigten keinen Einfluss auf die Eignung. Sepsis (p = 0,026) und Multiorganversagen (MOV; p < 0,001) als Todesursachen des Spenders resultierten in signifikant höheren Verwerfungsraten aufgrund von Kontamination des Kulturmediums. Hornhäute, bei denen die Blutentnahme mehr als 12 h seit Versterben des Spenders zurücklag, mussten signifikant häufiger wegen einer positiven Spenderserologie verworfen werden (p < 0,001). SCHLUSSFOLGERUNGEN:Faktoren wie eine vorangegangene Kataraktoperation und ein hohes Spenderalter verringerten die Eignung des Spendergewebes. Ein Diabetes, ein Hypertonus und eine Chemotherapie in der Spendervorgeschichte zeigten keinen statistisch signifikanten Einfluss auf die Eignung. Todesursachen wie Sepsis und Multiorganversagen erhöhten die Kontaminationsrate des Kulturmediums. Eine postmortale Blutentnahme nach mehr als 12 h geht mit einem erhöhten Risiko für ein positives Serologieergebnis einher.

journal_name

Klin Monbl Augenheilkd

authors

Kramp K,Suffo S,Laun D,Bischoff-Jung M,Huber M,Langenbucher A,Seitz B

doi

10.1055/a-1141-3703

subject

Has Abstract

pub_date

2020-11-01 00:00:00

pages

1334-1342

issue

11

eissn

0023-2165

issn

1439-3999

journal_volume

237

pub_type

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