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Corneal allograft rejection after multiple blood transfusions
1Department of Ophthalmology, University of California, San Francisco 94143-0730.
American Journal of Ophthalmology
|October 15, 1993
Summary
Multiple blood transfusions may increase the risk of corneal allograft rejection. Two patients experienced severe graft rejection weeks after receiving numerous packed red blood cell units.
Area of Science:
- Ophthalmology
- Immunology
- Transplantation immunology
Background:
- Corneal transplantation is a common procedure to restore vision.
- Graft rejection remains a significant challenge in corneal allograft success.
- The role of blood transfusions in modulating immune responses post-transplant requires further investigation.
Observation:
- Two patients developed corneal allograft rejection episodes.
- Rejection occurred within weeks following multiple packed red blood cell transfusions.
- One graft had been clear for 11 years, the other for 14 months prior to transfusion.
Findings:
- Severe endothelial rejection was noted in the first patient six weeks post-transfusion.
- Irreversible graft rejection occurred in the second patient two weeks post-transfusion.
- These cases indicate a potential link between multiple blood transfusions and corneal allograft rejection.
Implications:
- Multiple blood transfusions may represent a risk factor for corneal allograft rejection.
- Further research is warranted to elucidate the mechanisms underlying this association.
- Clinical protocols may need to consider transfusion history in managing corneal transplant patients.