Background: Posttransplant erythrocytosis (PTE) is a well-known complication of kidney transplantation. However, the risk and outcomes of PTE among simultaneous pancreas-kidney transplant (SPKT) recipients are poorly described.
Methods: We analyzed all SPKT recipients at our center between 1998 and 2021. PTE was defined as at least 2 consecutive hematocrit levels of >51% within the first 2 y of transplant. Controls were selected at a ratio of 3:1 at the time of PTE occurrence using event density sampling. Risk factors for PTE and post-PTE graft survival were identified.
Results: Of 887 SPKT recipients, 108 (12%) developed PTE at a median of 273 d (interquartile range, 160-393) after transplantation. The incidence rate of PTE was 7.5 per 100 person-years. Multivariate analysis found pretransplant dialysis (hazard ratio [HR]: 3.15; 95% confidence interval [CI], 1.67-5.92; < 0.001), non-White donor (HR: 2.14; 95% CI, 1.25-3.66; = 0.01), female donor (HR: 1.50; 95% CI, 1.0-2.26; = 0.05), and male recipient (HR: 2.33; 95% CI, 1.43-3.70; = 0.001) to be associated with increased risk. The 108 cases of PTE were compared with 324 controls. PTE was not associated with subsequent pancreas graft failure (HR: 1.36; 95% CI, 0.51-3.68; = 0.53) or kidney graft failure (HR: 1.16; 95% CI, 0.40-3.42; = 0.78).
Conclusions: PTE is a common complication among SPKT recipients, even in the modern era of immunosuppression. PTE among SPKT recipients was not associated with adverse graft outcomes, likely due to appropriate management.
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| http://dx.doi.org/10.1097/TXD.0000000000001607 | DOI Listing |
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