Browsing by Author "Steiner, Marie E"

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    Defining heparin resistance: communication from the ISTH SSC Subcommittee of Perioperative and Critical Care Thrombosis and Hemostasis.
    (Journal of thrombosis and haemostasis : JTH, 2023-12) Levy, Jerrold H; Sniecinski, Roman M; Rocca, Bianca; Ghadimi, Kamrouz; Douketis, James; Frere, Corinne; Helms, Julie; Iba, Toshiaki; Koster, Andreas; Lech, Tara K; Maier, Cheryl L; Neal, Mathew D; Scarlestscu, Ecatarina; Spyropoulos, Alex; Steiner, Marie E; Tafur, Alfonso J; Tanaka, Kenichi A; Connors, Jean M
    The term heparin resistance (HR) is used by clinicians without specific criteria. We performed a literature search and surveyed our SSC membership to better define the term when applied to medical and intensive care unit patients. The most common heparin dosing strategy reported in the literature (53%) and by survey respondents (80.4%) was the use of weight-based dosing. Heparin monitoring results were similar based on the proportion of publications and respondents that reported the use of anti-Xa and activated partial thromboplastin time. The most common literature definition of HR was >35 000 U/d, but no consensus was reported among survey respondents regarding weight-based and the total dose of heparin when determining resistance. Respondent consensus on treating HR included antithrombin supplementation, direct thrombin inhibitors, or administering more heparin as the strategies available for treating HR. A range of definitions for HR exist. Given the common use of heparin weight-based dosing, future publications employing the term HR should include weight-based definitions, monitoring assay, and target level used. Further work is needed to develop a consensus for defining HR.
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    Effect of platelet storage duration on clinical outcomes and incremental platelet change in critically ill children.
    (Transfusion, 2020-12) Nellis, Marianne E; Spinella, Philip C; Tucci, Marisa; Stanworth, Simon J; Steiner, Marie E; Cushing, Melissa M; Davis, Peter J; Karam, Oliver; Pediatric Acute Lung Injury and Sepsis Investigators (PALISI) network, Pediatric Critical Care Blood Research Network (BloodNet), and the P3T Investigators†
    The safety of platelet (PLT) concentrates with longer storage duration has been questioned due to biochemical and functional changes that occur during blood collection and storage. Some studies have suggested that transfusion efficacy is decreased and immune system dysfunction is worsened with increased storage age. We sought to describe the effect of PLT storage age on laboratory and clinical outcomes in critically ill children receiving PLT transfusions.

    Study design and methods

    We performed a secondary analysis of a prospective, observational point-prevalence study. Children (3 days to 16 years of age) from 82 pediatric intensive care units in 16 countries were enrolled if they received a PLT transfusion during one of the predefined screening weeks. Outcomes (including PLT count increments, organ dysfunction, and transfusion reactions) were evaluated by PLT storage age.

    Results

    Data from 497 patients were analyzed. The age of the PLT transfusions ranged from 1 to 7 days but the majority were 4 (24%) or 5 (36%) days of age. Nearly two-thirds of PLT concentrates were transfused to prevent bleeding. The indication for transfusion did not differ between storage age groups (P = .610). After patient and product variables were adjusted for, there was no association between storage age and incremental change in total PLT count or organ dysfunction scoring. A significant association between fresher storage age and febrile transfusion reactions (P = .002) was observed.

    Conclusion

    The results in a large, diverse cohort of critically ill children raise questions about the impact of storage age on transfusion and clinical outcomes which require further prospective evaluation.
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    Finding a common definition of heparin resistance in adult cardiac surgery: Communication from the ISTH SSC Subcommittee on Perioperative and Critical Care Thrombosis and Hemostasis.
    (Journal of Thrombosis and Haemostasis, 2024-01) Levy, Jerrold H; Sniecinski, Roman M; Maier, Cheryl L; Despotis, George J; Ghadimi, Kamrouz; Helms, Julie; Ranucci, Marco; Steiner, Marie E; Tanaka, Kenichi A; Connors, Jean M
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    Management of oral anticoagulants prior to emergency surgery or with major bleeding: A survey of perioperative practices in North America: Communication from the Scientific and Standardization Committees on Perioperative and Critical Care Haemostasis and Thrombosis of the International Society on Thrombosis and Haemostasis.
    (Research and practice in thrombosis and haemostasis, 2020-05) Levy, Jerrold H; Connors, Jean M; Steiner, Marie E; Douketis, James; Spyropoulos, Alex C
    Background:There is limited information on real-world practice versus current clinical practice guidelines for oral anticoagulant reversal before emergency surgery. Objective:To identify current practice/knowledge gaps for oral anticoagulant reversal emergency surgery among anesthesiologists. Methods:A 22-question survey covering aspects of clinical practice relating to oral anticoagulant reversal was sent to American Society of Anesthesiology members with weekly reminders during data collection from October to December 2018. Results:Responses were received from 2315 anesthesiologists of which 86% of respondents were United States based. Emergency surgery was defined as occurring within 4 hours of the decision to operate by 60% of respondents. Fresh frozen plasma (FFP) was used by 75% of respondents for vitamin K antagonist (VKA) reversal and by 54% for direct oral anticoagulant (DOAC) reversal in emergency surgery and 67% in major operative bleeding. Only 32% of institutions had emergency anticoagulant reversal protocols, and 54% of respondents selected an international normalized ration (INR) ratio goal for VKA reversal of ≤1.5. Only 13% initially consulted or coordinated management with hematologists, and the final decision regarding coagulation management was made by the respondent in 26% of cases. A coordinated approach with hematologists and cardiologists was reported by 64%, and over half (51%) required approval for prothrombin complex concentrate administration for emergency procedures. Conclusions:Despite recommendations to the contrary, FFP is extensively used for emergency VKA and DOAC reversal. There is a clear need for institutions to develop guideline-informed recommendations/management algorithms based on input from medical professionals routinely involved in management of these patients.
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    Perioperative Considerations in Management of the Severely Bleeding Coagulopathic Patient.
    (Anesthesiology, 2023-05) Erdoes, Gabor; Faraoni, David; Koster, Andreas; Steiner, Marie E; Ghadimi, Kamrouz; Levy, Jerrold H
    Inherited and acquired coagulopathy are frequently associated with major bleeding in severe trauma, cardiac surgery with cardiopulmonary bypass, and postpartum hemorrhage. Perioperative management is multifactorial and includes preoperative optimization and discontinuation of anticoagulants and antiplatelet therapy in elective procedures. Prophylactic or therapeutic use of antifibrinolytic agents is strongly recommended in guidelines and has been shown to reduce bleeding and need for allogeneic blood administration. In the context of bleeding induced by anticoagulants and/or antiplatelet therapy, reversal strategies should be considered when available. Targeted goal-directed therapy using viscoelastic point-of-care monitoring is increasingly used to guide the administration of coagulation factors and allogenic blood products. In addition, damage control surgery, which includes tamponade of large wound areas, leaving surgical fields open, and other temporary maneuvers, should be considered when bleeding is refractory to hemostatic measures.