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Audit of practice in platelet refractoriness
K J Phekoo1, H Hambley, S A Schey
1Haematology Department, Guy's Hospital, London, UK.
Objectives:
A significant number of patients become refractory to platelet transfusion and prompt investigation of the cause will encourage appropriate selection of platelet products.
Methods:
We surveyed haematologists to assess perceived practice concerning platelet refractoriness because of the high cost and limited availability of HLA-compatible platelets. Some 56 of 58 consultant haematologists participated.
Results:
Clinicians differed on their definition of platelet refractoriness, and non-immune factors were not considered as important as immune causes of platelet refractoriness. A working group, including an invited moderator, was established to produce guidelines on recommended practice for the management of platelet refractoriness. Re-audit after implementation of the guidelines showed that more patients receiving HLA-compatible platelets had been tested for HLA antibodies. There was a mean 50.9% reduction in the use of HLA-compatible platelets.
Conclusions:
Increased testing for leucocyte and platelet antibodies resulted in reduced demand for and more selective use of HLA-compatible platelets, with no apparent increase in haemorrhagic complications.