PMID- 14979405 OWN - NLM STAT- MEDLINE DCOM- 20041109 LR - 20191108 IS - 1076-0296 (Print) IS - 1076-0296 (Linking) VI - 10 IP - 1 DP - 2004 Jan TI - Laboratory diagnosis of heparin-induced thrombocytopenia in Asian Indians as investigated with functional and immunologic methods. PG - 51-4 AB - Heparin-induced thrombocytopenia (HIT) was looked for in 33 Indian patients undergoing cardiovascular surgery who received unfractionated heparin (UFH). Platelet counts were performed before the initiation of UFH therapy and 5 to 16 days after administration of the therapy. A decrease in patients' platelet count > 35% of the baseline value or < 100,000/microL was considered to be suggestive of HIT syndrome. Heparin-induced platelet aggregation (HIPA) and enzyme-linked immunosorbent assay (ELISA) tests were performed in all the patients to detect antibodies against heparin/PF4 complex. Thrombocytopenia was found to be present in 10 (30%) patients. Of these, two patients were found to be positive as detected by HIPA and ELISA tests. These two patients were considered to have classic HIT syndrome. One of these had bleeding while the other was asymptomatic. Among the 23 non-thrombocytopenic patients and controls, HIT antibodies were not detectable by HIPA test in all but absent by ELISA in only 21 of them. Two of 23 non-thrombocytopenic patients had positive results on the ELISA test. Because the latter had negative test results on HIPA, they were considered to be false-positive results. Thus, HIT syndrome develops in approximately 6% of Indian patients treated with UFH. FAU - Kannan, Meganathan AU - Kannan M AD - Department of Haematology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India. FAU - Ahmed, Rafeeq AU - Ahmed R FAU - Kale, Shailaja AU - Kale S FAU - Ahmad, Sarfraz AU - Ahmad S FAU - Fareed, Jawed AU - Fareed J FAU - Saxena, Renu AU - Saxena R LA - eng PT - Journal Article PL - United States TA - Clin Appl Thromb Hemost JT - Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis JID - 9508125 RN - 9005-49-6 (Heparin) SB - IM MH - Cardiac Surgical Procedures MH - Clinical Laboratory Techniques MH - Enzyme-Linked Immunosorbent Assay MH - Heparin/*adverse effects MH - Humans MH - India/epidemiology MH - Platelet Aggregation/drug effects MH - Platelet Count MH - Platelet Function Tests MH - Prevalence MH - Thrombocytopenia/*chemically induced/diagnosis/*epidemiology EDAT- 2004/02/26 05:00 MHDA- 2004/11/13 09:00 CRDT- 2004/02/26 05:00 PHST- 2004/02/26 05:00 [pubmed] PHST- 2004/11/13 09:00 [medline] PHST- 2004/02/26 05:00 [entrez] AID - 10.1177/107602960401000108 [doi] PST - ppublish SO - Clin Appl Thromb Hemost. 2004 Jan;10(1):51-4. doi: 10.1177/107602960401000108.