Hospital Acquired Venous Thromboembolism: A Preventability Assessment.

The American Heart Association has a call to action to reduce hospital acquired venous thromboembolism (HA-VTE) by 20% by the year 2030. There is increasing recognition that quality improvement initiatives for VTE reduction should focus on reducing potentially preventable HA-VTE. The objective of our study was to determine what proportion of HA-VTE events are potentially preventable.

Anticoagulant drug-drug interactions with cannabinoids: A systematic review.

This systematic review evaluates the extent to which the effect of anticoagulants may be altered in the presence of cannabinoids. The following databases were searched: EMBASE, PubMed, Web of Science, Scopus, PscycINFO, and CINAHL from database inception through May 2023. Search terms included cannabis AND anticoagulant AND drug interactions and related keywords.

Potential Dexamethasone-Direct Oral Anticoagulant Drug Interaction: Is This a Concern in COVID?

Objective: To evaluate the literature on a potential dexamethasone-direct oral anticoagulant (DOAC) drug interaction and provide management considerations with COVID hypercoagulability.

Data Sources: A search of EMBASE, PubMed, and Google Scholar (January 1990 to May 2021), limited to the English language, using applicable search terms resulted in 137 articles, with 21 relevant articles included. Regulatory agency and clinical guidance documents were also reviewed.

Serotonin-release assay-positive but platelet factor 4-dependent enzyme-immunoassay negative: HIT or not HIT?

IgG-specific and polyspecific PF4-dependent enzyme-immunoassays (EIAs) have exceptionally high sensitivity (≥99%) for diagnosis of heparin-induced thrombocytopenia (HIT), a drug reaction caused by platelet-activating antibodies detectable by serotonin-release assay (SRA). The IgG-specific EIAs are recommended for screening, as their high sensitivity is accompanied by relatively high specificity vis-à-vis polyspecific EIAs. We investigated the frequency of SRA-positive/EIA-negative (SRA+/EIA-) HIT, prompted by referral to our reference HIT laboratory of serial blood samples from a patient ("index case") with false-negative IgG-specific EIAs.

American Society of Hematology 2019 guidelines for management of venous thromboembolism: prevention of venous thromboembolism in surgical hospitalized patients.

Background: Venous thromboembolism (VTE) is a common source of perioperative morbidity and mortality.

Objective: These evidence-based guidelines from the American Society of Hematology (ASH) intend to support decision making about preventing VTE in patients undergoing surgery.

Methods: ASH formed a multidisciplinary guideline panel balanced to minimize bias from conflicts of interest.

Timing of Initiation of Oral Anticoagulation after Acute Ischemic Stroke in Patients with Atrial Fibrillation.

Patients with atrial fibrillation (AF) who suffer an acute ischemic stroke are at risk for both hemorrhagic transformation and recurrent ischemic stroke in the acute post-stroke period. Oral anticoagulants are recommended for secondary stroke prevention in patients with AF. The optimal time to initiate anticoagulant therapy after acute ischemic stroke in patients with AF is uncertain.

Major bleeding with apixaban in atrial fibrillation: patient characteristics, management, and outcomes.

Objectives: To identify patient characteristics, bleed management, and bleed outcomes in patients experiencing an apixaban major bleeding event and to identify opportunities to improve the safe use of apixaban.

Methods: This retrospective single health-system study identified apixaban patients experiencing a major bleeding event between January 2013 and May 2016 through electronic medical record review. Patient characteristics, bleed management, and outcomes were extracted in those with a confirmed major bleed assessed by the International Society on Thrombosis and Haemostasis criteria.

Reversal agents for use with direct and indirect anticoagulants.

Purpose: The properties of three oral anticoagulant-specific reversal agents are reviewed, and guidance is presented to assist pharmacists in planning for the agents' introduction to the market.

Summary: Idarucizumab, which received Food and Drug Administration approval in October 2015, is a humanized monoclonal antibody fragment that immediately neutralizes the anticoagulant effect of dabigatran, as evidenced by reduced unbound dabigatran concentrations and normalized coagulation tests. Preliminary Phase III trial results demonstrated a median maximum reversal of 100%, a median time to bleeding cessation of 11.

Guidance for the practical management of the heparin anticoagulants in the treatment of venous thromboembolism.

Venous thromboembolism (VTE) is a serious and often fatal medical condition with an increasing incidence. Despite the changing landscape of VTE treatment with the introduction of the new direct oral anticoagulants many uncertainties remain regarding the optimal use of traditional parenteral agents. This manuscript, initiated by the Anticoagulation Forum, provides clinical guidance based on existing guidelines and consensus expert opinion where guidelines are lacking.

Characteristics, Management, and Outcomes of Patients with Atrial Fibrillation Experiencing a Major Bleeding Event While on Rivaroxaban.

Rivaroxaban, the first oral direct factor Xa inhibitor, was approved for stroke prevention in nonvalvular atrial fibrillation in 2011. Limited data are available regarding major bleeding in a clinical practice setting. The purpose of this study is to describe the patient characteristics, management, and outcomes of major bleeding events in patients receiving rivaroxaban for atrial fibrillation.

Optimizing Anticoagulation Management Through the Use of a Hospital Engagement Network Metric for Inpatient Anticoagulant-Associated Hemorrhage.

Background: The University HealthSystem Consortium (UHC), a national hospital engagement network (HEN), establishes health-system metrics to assess and improve quality of care. In 2012, a metric for inpatient anticoagulant hemorrhage was developed. The utility of this metric to improve anticoagulation care has not been assessed.

Dabigatran versus warfarin major bleeding in practice: an observational comparison of patient characteristics, management and outcomes in atrial fibrillation patients.

Data comparing the patient characteristics, management and outcomes for dabigatran versus warfarin major bleeding in the practice setting are limited. We performed a retrospective single health system study of atrial fibrillation patients with dabigatran or warfarin major bleeding from October 2010 through September 2012. Patient identification occurred through both an internal adverse event reporting system and a structured stepwise data filtering approach using the International Classification of Diseases diagnosis codes.

Rivaroxaban: practical considerations for ensuring safety and efficacy.

Rivaroxaban is the first agent available within a new class of anticoagulants called direct factor Xa inhibitors. Rivaroxaban is approved for use in the United States for the prevention of stroke and systemic embolism in patients with nonvalvular atrial fibrillation, for the prevention of deep vein thrombosis in patients undergoing total hip replacement and total knee replacement, for the treatment of deep vein thrombosis and pulmonary embolism, and for the reduction in risk of recurrence of deep vein thrombosis and pulmonary embolism (with additional indications under review). Rivaroxaban dose and frequency of administration vary depending on the indication.

Assessing the impact of a heparin-induced thrombocytopenia protocol on patient management, outcomes and cost.

Establishing the diagnosis of heparin induced thrombocytopenia (HIT) is challenging as laboratory tests for HIT vary in specificity and availability. As HIT suspicion far exceeds confirmation of diagnosis, overtreatment is an emerging concern. This pilot study evaluated the impact of a HIT Recognition and Management Protocol on direct thrombin inhibitor (DTI) prescribing, outcomes, and cost.

Development and implementation of a comprehensive heparin-induced thrombocytopenia recognition and management protocol.

Purpose: A quality initiative to improve the management of heparin-induced thrombocytopenia (HIT) at an academic medical center, including the development of guidelines on the use of direct thrombin inhibitors (DTIs), is described.

Summary: In keeping with the Joint Commission's National Patient Safety Goal (NPSG) for anticoagulant therapy (goal 03.05.

Strategies for managing heparin therapy in patients with antiphospholipid antibody syndrome.

Antiphospholipid antibody syndrome (APS) is a common acquired thrombophilia. The diagnosis of APS is based on both clinical and laboratory criteria. The clinical criteria include vascular thrombosis or pregnancy morbidity.

An innovative elective course in anticoagulation management.

Objective: To develop and implement an elective pharmacy course in anticoagulation management and assess student learning.

Design: Students participated in active-learning activities including evaluating a patient receiving outpatient or inpatient anticoagulation therapy, participating in a team project and presentation, and completing a "living with anticoagulation" assignment that included modeling both the health care provider's and the patient's role.

Assessment: A precourse and postcourse standardized examination on anticoagulation along with a short answer midterm and final examination were administered.

Venous limb gangrene and fatal hemorrhage: adverse consequences of HIT "overdiagnosis" in a patient with antiphospholipid syndrome.

This unfortunate patient case highlights the problems with "overdiagnosis" of HIT. Despite "positive" tests for HIT antibodies, the low pretest probability for HIT and the known propensity of patients with APS to yield false-positive HIT antibody results suggests that the patient did not have a true diagnosis of HIT. Moreover, the early administration of warfarin and the choice of argatroban for parenteral anticoagulation when monitoring was hindered by a prolonged baseline aPTT likely play a key factor in the progression of UE DVT to VLG.

Drug-induced thrombocytopenia in critically ill patients.

Thrombocytopenia occurs in 15% to 58% of intensive care unit patients. The incidence varies based upon patient population, timing and frequency of platelet monitoring, and definition of thrombocytopenia. Up to 25% of acutely ill patients develop drug-induced thrombocytopenia.

Recombinant factor VIIa to manage major bleeding from newer parenteral anticoagulants.

Objective: To evaluate the use of recombinant factor VIIa (rFVIIa) to reverse major bleeding from newer parenteral anticoagulant therapy.

Data Sources: MEDLINE/PubMed was searched from January 2000 through December 2009 using the terms recombinant factor VIIa, rFVIIa, NovoSeven, enoxaparin, argatroban, fondaparinux, lepirudin, bivalirudin, idraparinux, nadroparin, hirudin, and desirudin. References of identified articles were reviewed.