ISSN 2348-313X (Print) International Journal of Life Sciences Research ISSN 2348-3148 (online) Vol. 10, Issue 4, pp: (82-86), Month: October - December 2022, Available at: www.researchpublish.com
Influence of the patient population on the risk of heparin-induced thrombocytopenia MOHAMMED AYED ALSEFRI1*, MORAD AYED ALSEFRI2, ABDULLAH SALEM ALHARBI3 1*
Corresponding Author, Pharmacy Technician King Abdullah Medical Complex – Jeddah 2
PHARMACY TECHNICIAN EAST JEDDAH HOSPITAL-JEDDAH 3
Pharmacist East Jeddah Hospital – Jeddah
DOI: https://doi.org/10.5281/zenodo.7472536
Published Date: 22-December-2022
Abstract: 744 patients from 3 different clinical settings were evaluated as follows: unfractionated heparin (UFH) during or after cardiac surgery (n=100), UFH after orthopedic surgery (n=100, = 205) and molecular weight heparin (LMWH ) after orthopedic surgery (n = 439). In the activation assay, the frequency of HIT-IgG formation varied from a minimum of 3.2% in orthopedic patients receiving LMWH to a maximum of 20% in cardiac patients receiving UFH; per antigen assay, the corresponding frequencies ranged from 7.5% to 50%. However, in patients who developed HIT-IgG and received UFH, the probability of HIT was higher in orthopedic patients than in cardiac patients (according to the activation assay: 52.6% vs. 5%; odds ratio 21.1). [95% CI, 2.2962.8]; P = .001; nach Antigen-Assay: 34,5 % vs. 2,0 %; Odds Ratio, 25,8 [95 % KI, 3,2-1141]; P < 001). It is concluded that there is an unexpected dissociation between the frequency of HIT-IgG formation and the risk of HIT, which depends on the patient population. Keywords: cardiac patients, heparin-induced thrombocytopenia, patient population.
I. INTRODUCTION Heparin-brought about thrombocytopenia (HIT) is an unfavorable drug response due to heparin-established IgG (HIT-IgG) antibodies that spark off platelets.1-three The goal antigen includes multi-molecular complexes of platelet issue four and heparin.four-7 The frequency of HIT varies considerably, as noted through potential research.8,nine The motives for those versions are unknown however will be associated with exclusive heparin preparations,10 affected person populaceestablished factors, or maybe exclusive laboratory strategies used to locate the antibodies chargeable for HIT. Activation assays, which includes the platelet serotonin launch assay, locate HIT-IgG on the idea in their capacity to spark off platelets.11-thirteen Antigen assays, which includes a solid-section immunoassay, locate the binding of antibodies to immobilized platelet issue four–heparin complexes. four-7,14,15 Despite the growing use of those assays, few research has as compared their scientific usefulness in diagnosing HIT. Those studies14,16-18 evaluating activation and antigen assays generally had been confined to investigating affected person samples that have been referred with the scientific suspicion of HIT (excessive pretest probability). In this report, we describe the outcomes of laboratory checking out for HIT-IgG the use of each activation and antigen assays in 744 prospectively studied sufferers. The outcomes of this take a look at suggest that there may be a surprising dissociation among the formation of HIT-IgG and the threat for HIT amongst sufferers in whom antibodies shape this is affected person populace established.
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