PMID- 27106479 OWN - NLM STAT- MEDLINE DCOM- 20170313 LR - 20220321 IS - 1865-3774 (Electronic) IS - 0925-5710 (Linking) VI - 104 IP - 1 DP - 2016 Jul TI - Screening frequency, incidence and pattern of heparin-induced thrombocytopenia syndrome at a large tertiary institution. PG - 92-8 LID - 10.1007/s12185-016-2013-3 [doi] AB - Increasing awareness and availability of tests for anti-PF4/heparin complex antibodies has raised concerns about indiscriminate testing and inappropriate diagnosis of heparin-induced thrombocytopenia. A retrospective review of HITS testing at a large tertiary centre was performed to determine test patterns and incidence of HITS. Records of anti-PF4 tests over 4 years were reviewed. Positive results were matched against patient medical records and records of heparin utilisation for the diagnosis of HITS. Total of 33,308 patients (9.89 % of admissions) were exposed to at least 1 day of unfractionated heparin (UFH) or low molecular weight heparin (LMWH). Of 346 anti-PF4 antibody assays performed, 52 (15 %) were positive. Seventeen patients (4.9 % of total) were determined to have HITS. Of these, 13 cases (76 %) were patients who were initiated on haemodialysis via central venous catheters. Five patients (29 %) subsequently experienced thrombosis. The rate of HITS in patients given UFH was 0.33 %. HITS occurred in only one patient given LMWH. Of 1337 patients with chronic renal failure initiated on long term haemodialysis, the incidence of HITS was 0.97 %. Despite increased awareness of HITS, testing frequency remains conservative. An overwhelming majority of HITS cases were diagnosed among patients initiated on haemodialysis. FAU - Mya, Hae Tha AU - Mya HT AD - Department of Haematology, Singapore General Hospital, 20 College Road, Singapore, 169856, Singapore. mya.hae.tha@singhealth.com.sg. FAU - Tay, Hui Ming AU - Tay HM AD - Department of Haematology, Singapore General Hospital, 20 College Road, Singapore, 169856, Singapore. FAU - Gan, Shien Wen AU - Gan SW AD - Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore. FAU - Surendran, Shilpa AU - Surendran S AD - Department of Haematology, Singapore General Hospital, 20 College Road, Singapore, 169856, Singapore. FAU - Yeang, Shu Hui AU - Yeang SH AD - Department of Pharmacy, Singapore General Hospital, Singapore, Singapore. FAU - Lim, Cynthia Ciwei AU - Lim CC AD - Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore. FAU - Choong, HuiLin AU - Choong H AD - Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore. FAU - Lee, Lai Heng AU - Lee LH AD - Department of Haematology, Singapore General Hospital, 20 College Road, Singapore, 169856, Singapore. FAU - Ng, Heng Joo AU - Ng HJ AD - Department of Haematology, Singapore General Hospital, 20 College Road, Singapore, 169856, Singapore. LA - eng PT - Journal Article DEP - 20160422 PL - Japan TA - Int J Hematol JT - International journal of hematology JID - 9111627 RN - 0 (Antibodies) RN - 0 (Heparin, Low-Molecular-Weight) RN - 37270-94-3 (Platelet Factor 4) RN - 9005-49-6 (Heparin) SB - IM MH - Antibodies/analysis MH - Heparin/*adverse effects MH - Heparin, Low-Molecular-Weight/adverse effects MH - Humans MH - Incidence MH - Medical Records MH - Platelet Factor 4/immunology MH - Renal Dialysis/adverse effects MH - Retrospective Studies MH - Tertiary Care Centers MH - Thrombocytopenia/chemically induced/diagnosis/*etiology OTO - NOTNLM OT - Heparin OT - Heparin-induced thrombocytopenia OT - Incidence EDAT- 2016/04/24 06:00 MHDA- 2017/03/14 06:00 CRDT- 2016/04/24 06:00 PHST- 2016/01/20 00:00 [received] PHST- 2016/03/08 00:00 [accepted] PHST- 2016/03/08 00:00 [revised] PHST- 2016/04/24 06:00 [entrez] PHST- 2016/04/24 06:00 [pubmed] PHST- 2017/03/14 06:00 [medline] AID - 10.1007/s12185-016-2013-3 [pii] AID - 10.1007/s12185-016-2013-3 [doi] PST - ppublish SO - Int J Hematol. 2016 Jul;104(1):92-8. doi: 10.1007/s12185-016-2013-3. Epub 2016 Apr 22.