3.8 Article

Anticoagulant-related intracranial haemorrhage: time to anticoagulant reversal improving but still slower than thrombolysis for ischaemic stroke

Journal

NEW ZEALAND MEDICAL JOURNAL
Volume 134, Issue 1529, Pages 69-79

Publisher

NEW ZEALAND MEDICAL ASSOC

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The study found improvements in door-to-any-reversal-agent and scan-to-PCC times over time, but they remain significantly longer than IS thrombolysis times. Monitoring of reversal is inadequate, particularly for WRICH receiving PCC.
AIMS: This study aims to determine whether door-to-needle times (DNT) for reversal of anticoagulant-associated intracerebral haemorrhage (ICH) (1) have improved over time, (2) differ between warfarin and dabigatran and (3) are comparable to ischaemic stroke (IS) thrombolysis DNT, and (4) whether reversal is monitored. METHODS: Retrospective review of all warfarin- and dabigatran-associated ICH presenting to Christchurch Hospital over a 15-year period. DNT data from 2013-2018 were compared between warfarin-related ICH (WRICH), dabigatran-related ICH (DRICH) and IS thrombolysis. RESULTS: 172 WRICH were identified. Over time there were significant reductions in door-to-first-reversal-agent (r=-0.21, p=0.01), scan-to-first-reversal-agent (r=-0.27, p=0.001) and scan-to-prothrombin-complex-concentrate (PCC) (r=-0.33, p=0.001) times. In the 2013-2018 cohort, WRICH had significantly slower DNT, door-to-scan time and scan-to-needle time compared to DRICH and IS thrombolysis (all p<0.001). There was no statistical difference between DRICH and IS. Median DNT was 183 minutes for WRICH, 72 minutes for DRICH and 52 minutes for IS. Median time to repeat international normalised ratio was 231 minutes, and the median time to repeat thrombin clotting time was 825 minutes. CONCLUSION: Door-to-any-reversal-agent and scan-to-PCC times have improved over time, but they remain significantly longer than IS thrombolysis times. Monitoring of reversal is inadequate, particularly for WRICH receiving PCC.

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