Time to oral anticoagulant reversal in intracranial hemorrhage with an emergency medicine pharmacist presence.

PURPOSE: Intracranial hemorrhage (ICH) is associated with high morbidity and mortality, with mortality rates up to 65%. Oral anticoagulants (OAC) are a major risk factor for ICH. Since these patients are usually diagnosed in the emergency department (ED), emergency medicine (EM) pharmacists can help ensure appropriate selection and delivery of medications in urgent situations including reversal agents for OAC-associated bleeding. The purpose of this study was to determine the impact EM pharmacist presence has on time to OAC reversal in patients presenting with an ICH. PROCEDURES: This was a retrospective, single-center cohort study evaluating time to reversal of OAC-associated ICH at a level one trauma center between November 2016 and September 2022. Patients 18 years or older who presented to the ED with an OAC-associated ICH and received at least one dose of an emergent reversal agent were included. Patients were excluded if their ICH was diagnosed at an outside facility, if they received emergent reversal agents for other indications, or if they had do not resuscitate orders upon admission. The primary outcome was time to administration of reversal agent with or without an EM pharmacist present, represented as median [interquartile range]. Secondary outcomes included hematoma expansion, hospital length of stay, intensive care unit LOS, and in-hospital mortality. RESULTS: Of the 157 patients evaluated, 83 met criteria for inclusion. Majority of patients presented with warfarin-associated ICH (55%) and the most common indication for OAC was atrial fibrillation (66%). The most common type of ICH was intracerebral hemorrhage (35%). The median time to emergent reversal agent administration was significantly shorter in the EM pharmacist group (50 min [31-65] vs. 85 min [51-121], p < 0.01). No significant differences in secondary outcomes existed. CONCLUSIONS: The presence of an EM pharmacist at the bedside of patients who present to the ED with ICH was associated with a decrease in the time to OAC reversal by 36 min. Presence of an EM pharmacist was not associated with improved clinical outcomes for ICH in our study. Larger trials are warranted to determine whether the presence of an EM pharmacist is associated with improved functional and clinical outcomes in patients with OAC-associated ICH and whether time to newer reversal agents, other than 4F-PCC, has an effect on outcomes.

Multicenter Comparison of the Safety and Efficacy of Clopidogrel Versus Ticagrelor for Neuroendovascular Stents.

BACKGROUND: Dual antiplatelet therapy (DAPT) is commonly employed for neuroendovascular stenting due to the significant risk of thromboembolism. Clopidogrel and aspirin are most often selected as initial DAPTs; however, there is limited literature available to support guidance of DAPT in this setting. The objective of this study was to evaluate safety and efficacy in patients whose final regimen included either DAPT with aspirin and clopidogrel (DAPT-C) or DAPT with aspirin and ticagrelor (DAPT-T). METHODS: This was a multicenter, retrospective cohort of patients who underwent neuroendovascular stenting and received DAPT between July 1, 2017, and October 31, 2020. Study participants were allocated into groups based on discharge DAPT regimen. The primary outcome was incidence of stent thrombosis at 3-6 months on DAPT-C versus DAPT-T, as defined by the presence of thrombus on imaging or new onset stroke. Secondary outcomes included major and minor bleeding and death within 3-6 months after the procedure. RESULTS: Five hundred and seventy patients were screened across 12 sites. Of those, 486 were included (DAPT-C n = 360, DAPT-T n = 126). There was no difference in the primary outcome of stent thrombosis between the DAPT-C and DAPT-T groups (8% vs. 8%, p = 0.97) and no difference in any of the secondary safety outcomes. CONCLUSIONS: Using DAPT-C or DAPT-T regimens in a broad population of neuroendovascular stenting procedures appears to have similar safety and efficacy profiles. Further prospective evaluation is warranted to streamline the practice of DAPT selection and monitoring to determine the impact on clinical outcomes.

Multicenter comparison of antiplatelet treatment strategies for urgent/emergent neuroendovascular stenting.

BACKGROUND: Emergent neuroendovascular stenting presents challenges for the utilization of antiplatelet agents. METHODS: This was a multicenter, retrospective cohort of patients who underwent emergent neuroendovascular stenting. The primary endpoints were thrombotic and bleeding events in relation to the timing of antiplatelet administration, route of administration, and choice of intravenous (IV) agent and the study investigated practice variability in antiplatelet utilization. RESULTS: Five-hundred and seventy patients were screened across 12 sites. Of those, 167 were included for data analysis. For patients who presented with ischemic stroke, artery dissection and emergent internal carotid artery (ICA) stenting who received an antiplatelet agent prior to or during the procedure, 57% were given an IV antiplatelet agent; for patients who were given an antiplatelet agent after the procedure, 96% were given an oral agent. For patients who presented for aneurysm repair and received an antiplatelet agent prior to or during the procedure, 74% were given an IV agent; patients who were given an antiplatelet agent after the completion of the procedure were given an oral antiplatelet agent 90% of the time. In patients who presented with ischemic stroke, artery dissection and emergent ICA stenting who received oral antiplatelet agents post-procedure were more likely to have thrombotic events compared to those who received oral antiplatelet agents prior to or during the procedure (29% vs 9%; p = 0.04). There were no differences in the primary outcomes observed when comparing other antiplatelet treatment strategies. CONCLUSION: The optimal timing of antiplatelet administration in relation to stent placement and route of administration of antiplatelet agents is unclear. Timing and route of administration of antiplatelet agents may have an effect on thrombosis in emergent neuroendovascular stenting. Significant practice variation exists in antiplatelet agent utilization in emergent neuroendovascular stenting.

The Rising Status of Phenobarbital: A Case for Use in Severe Refractory Hyperactive Poststroke Delirium.

INTRODUCTION: Up to 48% of patients who have had a stroke will experience poststroke delirium (PSD) that can be hyperactive, hypoactive, or mixed. Literature on treatment of the hyperactive subtype is specifically lacking. This case report describes the rapid resolution of severe refractory hyperactive PSD with phenobarbital. CASE REPORT: A 58-year-old man with a left middle cerebral artery stroke presented with severe hyperactive PSD of 12 days duration, refractory to antipsychotics, alpha-2 agonists, gabapentin, therapeutic valproic acid, benzodiazepines, and ketamine infusion. An oral dose of phenobarbital 30.4 mg, followed by oral maintenance therapy was initiated on day 13 of admission with dramatic improvement. As his Richmond Agitation-Sedation score trended downwards to 0, he was able to cooperate with therapies. This allowed for discharge to a skilled nursing facility for rehabilitation and subsequently home 2 weeks later. CONCLUSION: Hyperactive PSD is a common complication of stroke with little evidence to guide treatment strategies. This report suggests that phenobarbital, because of its varied mechanisms of action and unique neurochemistry, may be an unrecognized potential therapy.