ABSTRACT
BACKGROUND: Thomboelastography (TEG) is a point of care viscoelastic test that provides an assessment of clot formation and kinetics. Antiplatelet agents are commonly used but there is limited literature evaluating their possible effects on overall clot kinetics. We aimed to evaluate the relationship between antiplatelet agents and clot kinetics as defined by TEG. METHODS: This is a retrospective study of adult patients who underwent TEG from February 2018 to July 2020. Patients who received anticoagulants or blood transfusions within 72 hours, had an incomplete TEG, were diagnosed with COVID-19, or had liver failure were excluded. Patients were stratified based on antiplatelet status. RESULTS: Of 1060 patients, 119 were included (50 controls, 69 antiplatelet agents-37 aspirin monotherapy, 26 dual antiplatelet therapy). Between the control and antiplatelet therapy groups, there was no significant difference in clot time, maximal clot strength, or fibrinogen level. When compared to control patients, patients on dual antiplatelets had significantly higher fibrinogen levels (408.1 mg/dL vs 481.5 mg/dL, P = .013) but no significant differences in clot time or maximal clot strength. In our subgroup analysis, patients on dual antiplatelets had increased maximal clot strength (58.8° vs 63°, P = .005) and fibrinogen levels (384.1 mg/dL vs 481.5 mg/dL, P = .005) compared to those on aspirin alone. DISCUSSION: Compared to control patients and those on aspirin alone, patients on dual antiplatelets have increased maximal clot strength and increased fibrinogen levels. These results can help physicians better target product resuscitation in patients who are on antiplatelet agents.
Subject(s)
Platelet Aggregation Inhibitors , Thrombosis , Adult , Humans , Platelet Aggregation Inhibitors/pharmacology , Thrombelastography/methods , Retrospective Studies , Aspirin/pharmacology , Fibrinogen/analysisSubject(s)
Infections/etiology , Infections/therapy , Intestinal Mucosa/pathology , Intestine, Small/pathology , Intestines/transplantation , Mesenchymal Stem Cell Transplantation/methods , Mesenchymal Stem Cells/cytology , Transplantation/methods , Alemtuzumab , Antibodies, Monoclonal, Humanized/therapeutic use , Female , Graft Survival , HLA Antigens/immunology , Humans , Immunosuppressive Agents/therapeutic use , Inflammation , Intestine, Small/physiology , Middle Aged , Neuromuscular Diseases/complications , Neuromuscular Diseases/therapy , Postoperative Complications , Regeneration , Short Bowel Syndrome/complications , Short Bowel Syndrome/therapy , Tacrolimus/therapeutic use , Treatment OutcomeABSTRACT
Sentinel lymph node biopsy (SLNB) has become an established investigation for assessing microscopic nodal metastasis in melanoma. The American Joint Committee on Cancer (AJCC) incorporates the sentinel node status in its staging criteria for melanoma. We present our clinical evaluation of performing SLNB in a single UK centre between 1998 and 2008. There were 697 patients with a mean age 53 years (range 13-92). We were able to surgically harvest at least one sentinel node in 694 patients of which 532 (76%) were negative. Of the 162 positive patients, 129 underwent further completion lymphadenectomy with 29 showing further pathologically positive nodes. At median follow up of 46 months, mortality from melanoma for SLN positive and negative patients was 32% and 4%, respectively. Disease recurrence was noted in 10% of the SLN negative group. Survival curves showed significant difference (p<0.001) in outcomes for patients grouped by Breslow thickness. Postoperative complications were noted in 6% of patients. No life-threatening complications were noted. Our results are comparable to other national and international studies. We await the outcomes of ongoing trials to assess the therapeutic value of SLNB for melanoma.
