Factors associated with persistent thrombocytopenia after liver transplantation.

Abstract:

BACKGROUND:Thrombocytopenia typically resolves with resolution of portal hypertension after liver transplantation (LT) but persists in some patients. Identifying risk factors associated with persistent post- LT thrombocytopenia may provide important information about its pathogenesis. METHODS:Cirrhotic adults with platelet levels of <150,000 mu/L at the time of LT and followed at least 1 year were studied. A retrospective analysis of lab values, radiologic spleen index (SI), and donor data using nonparametric methods was performed to characterize patients having persistent thrombocytopenia, defined as persistently low platelet levels at 3 and 12 months after LT. RESULTS:One hundred patients were studied: mean age 55 y (range 23-75 y); platelet count at LT 62,000/microL (range 14,000- 148,000/microL; mean total bilirubin 2.6 mg/dL; mean Mayo end-stage liver disease score 29; SI 1,476 (range 347-4,843 mL; normal 120-480 mL). Platelet count at 3 and 12 months after LT correlated with SI (r = -0.41 and -0.54; P < .001). Fifty-seven patients had persistent thrombocytopenia. Compared with patients whose platelet levels normalized by month 3 or 12, they had higher SI and lower platelet count before LT (P < .001). The SI and platelet levels at the time of LT were independent predictive factors for platelet levels at 3 and 12 months after LT (P < .001). CONCLUSIONS:High SI and low platelet count at the time of LT are associated with persistent thrombocytopenia after LT. They are also independent predictive factors of platelet levels at 3 and 12 months after LT. This suggests that patients may have persistent thrombocytopenia after LT owing to persistence of some degree of hypersplenism and incomplete resolution of splenomegaly.

journal_name

Transplant Proc

authors

Stanca CM,Fiel MI,Aledort L,Cohen E,del Rio Martin J,Schiano TD

doi

10.1016/j.transproceed.2010.02.075

subject

Has Abstract

pub_date

2010-06-01 00:00:00

pages

1769-73

issue

5

eissn

0041-1345

issn

1873-2623

pii

S0041-1345(10)00523-3

journal_volume

42

pub_type

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