PMID- 38223315 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240116 IS - 2160-1992 (Print) IS - 2160-1992 (Electronic) IS - 2160-1992 (Linking) VI - 13 IP - 6 DP - 2023 TI - A retrospective analysis of the frequency of heparin-induced thrombocytopenia in the intensive care unit at a tertiary care center in Riyadh, Saudi Arabia. PG - 198-206 AB - BACKGROUND: Heparin-induced thrombocytopenia (HIT) is an extremely serious and potentially fatal condition that can develop in patients taking heparin-based medications, such as unfractionated heparin (UFH) or low-molecular-weight heparin (LMWH). The incidence and risk factors for HIT in critically ill patients, however, are not well defined. METHODS: We retrospectively collected data on HIT test results, route of heparin administration, age, sex, heparin type (UFH or LMWH), and date of illness from patients admitted to the intensive care unit (ICU) and regular nursing floor (non-ICU) at our hospital between January 2011 and December 2014. We screened patients for HIT using the 4T score and confirmed the diagnosis through laboratory testing (direct enzyme immunoassay immunoglobulin G [IgG] or a platelet-activating antibody). RESULTS: We screened a total of 946 patients, 56 (5.9%) of whom were positive for HIT. Among 776 patients receiving UFH and 180 receiving LMWH, 2.8 and 6.6% developed HIT, respectively (P = 0.051). We then classified our patients into two groups: ICU, and non-ICU. In the non-ICU group (n = 317), 4 (2.7%) patients receiving LMWH and 25 (5.1%) receiving UFH were positive for HIT (P = 0.221). In the ICU group (n = 639), 1 (3.1%) patient receiving LMWH and 26 (9.1%) receiving UFH were positive for HIT (P = 0.249). The ICU group, therefore, had a higher cumulative incidence rate of HIT than the non-ICU group (8.5 vs. 4.5%). CONCLUSION: HIT was more common in ICU patients than non-ICU patients and in more patients receiving UFH than LMWH, although the differences were not statistically significant. Early diagnosis and appropriate treatment are essential to prevent adverse outcomes in patients with HIT. CI - AJBR Copyright (c) 2023. FAU - Mushtaq, Ali H AU - Mushtaq AH AD - Al Faisal University Riyadh, Saudi Arabia. AD - Department of Internal Medicine, Cleveland Clinic Foundation Cleveland, Ohio, The United States of America. FAU - Rasheed, Abdulrahman W AU - Rasheed AW AD - Department of Internal Medicine, Cleveland Clinic Foundation Cleveland, Ohio, The United States of America. FAU - Jamil, Mouhamad G AU - Jamil MG AD - Department of Hematology, King Faisal Specialist Hospital and Research Center Riyadh, Saudi Arabia. FAU - Maghrabi, Khalid AU - Maghrabi K AD - Department of Hematology, King Faisal Specialist Hospital and Research Center Riyadh, Saudi Arabia. FAU - Khoja, Osama AU - Khoja O AD - Department of Hematology, King Faisal Specialist Hospital and Research Center Riyadh, Saudi Arabia. FAU - Sajid, Muhammad R AU - Sajid MR AD - Al Faisal University Riyadh, Saudi Arabia. FAU - Tamim, Hani AU - Tamim H AD - Al Faisal University Riyadh, Saudi Arabia. FAU - Hijazi, Mohammad AU - Hijazi M AD - Department of Hematology, King Faisal Specialist Hospital and Research Center Riyadh, Saudi Arabia. FAU - Owaidah, Tarek AU - Owaidah T AD - Al Faisal University Riyadh, Saudi Arabia. AD - Department of Hematology, King Faisal Specialist Hospital and Research Center Riyadh, Saudi Arabia. LA - eng PT - Journal Article DEP - 20231225 PL - United States TA - Am J Blood Res JT - American journal of blood research JID - 101569577 PMC - PMC10784120 OTO - NOTNLM OT - Heparin-induced thrombocytopenia OT - critical illness OT - heparin OT - intensive care unit OT - low molecular weight heparin COIS- None. EDAT- 2024/01/15 06:42 MHDA- 2024/01/15 06:43 PMCR- 2023/12/25 CRDT- 2024/01/15 04:46 PHST- 2023/08/11 00:00 [received] PHST- 2023/12/21 00:00 [accepted] PHST- 2024/01/15 06:43 [medline] PHST- 2024/01/15 06:42 [pubmed] PHST- 2024/01/15 04:46 [entrez] PHST- 2023/12/25 00:00 [pmc-release] AID - 10.62347/GPME5540 [doi] PST - epublish SO - Am J Blood Res. 2023 Dec 25;13(6):198-206. doi: 10.62347/GPME5540. eCollection 2023.