TY - JOUR
T1 - The Dilemma of Resuming Antithrombotic Therapy After Intracranial Hemorrhage in Patients With Left Ventricular Assist Devices
AU - Santos, Christan D.
AU - Matos, Nikki L.
AU - Asleh, Rabea
AU - Dawit, Sara
AU - Rabinstein, Alejandro A.
AU - O’Carroll, Cumara B.
AU - Li, Zhuo
AU - Freeman, William D.
N1 - Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature and Neurocritical Care Society.
PY - 2020/6/1
Y1 - 2020/6/1
N2 - Background/Objective: Antithrombotic therapy is administered after left ventricular assist device (LVAD) implantation to prevent thromboembolic events. Intracranial hemorrhage (ICH) is a life-threatening adverse event requiring immediate discontinuation of antithrombotics. We investigated the timing of antithrombotic resumption after ICH in patients with LVADs and the association between timing and risk of recurrent hemorrhage and thrombotic events. Methods: We performed a multicenter, retrospective analysis of patients with ICH occurrence during LVAD antithrombotic regimen with subsequent resumption of antithrombotics from January 1, 2010, to December 31, 2017. Covariates included age, international normalized ratio, antithrombotic dosing, timing of resumption, modified Rankin score, and subsequent hemorrhagic and thrombotic events within 1 year post-ICH. Patients who did not resume anticoagulation were excluded. Results: Of 673 patients with LVADs, 85 (12.6%) developed ICH while being treated with antithrombotics. Forty-three were excluded due to death prior to resumption and one due to lack of resumption. The remaining 41 patients were on antithrombotics with a median (interquartile range [IQR]) international normalized ratio at ICH onset of 2.6 (1.8–3.6). Aspirin and warfarin were resumed at a median (IQR) of 5.5 (1.3–8.8) and 6.5 (4.0–15.5) days post-ICH, respectively. A continuous unfractionated heparin infusion was initiated in 16 (39.0%) patients at a median (IQR) of 2.5 (1.0–7.8) days post-ICH. During the 1-year follow-up after anticoagulation resumption, 11 (26.8%) patients suffered secondary hemorrhages and two (4.9%) suffered secondary thrombotic events. Using Kaplan–Meier method and log-rank test, we compared all patients who resumed anticoagulation by 6 days post-ICH to those who resumed after 6 days. There was no difference in freedom from secondary hemorrhagic event between the two groups (P = 0.75). Conclusion: Despite timing of resumption of antithrombotic therapy after ICH, recurrent hemorrhagic events can be expected in one-quarter of these patients over the subsequent year.
AB - Background/Objective: Antithrombotic therapy is administered after left ventricular assist device (LVAD) implantation to prevent thromboembolic events. Intracranial hemorrhage (ICH) is a life-threatening adverse event requiring immediate discontinuation of antithrombotics. We investigated the timing of antithrombotic resumption after ICH in patients with LVADs and the association between timing and risk of recurrent hemorrhage and thrombotic events. Methods: We performed a multicenter, retrospective analysis of patients with ICH occurrence during LVAD antithrombotic regimen with subsequent resumption of antithrombotics from January 1, 2010, to December 31, 2017. Covariates included age, international normalized ratio, antithrombotic dosing, timing of resumption, modified Rankin score, and subsequent hemorrhagic and thrombotic events within 1 year post-ICH. Patients who did not resume anticoagulation were excluded. Results: Of 673 patients with LVADs, 85 (12.6%) developed ICH while being treated with antithrombotics. Forty-three were excluded due to death prior to resumption and one due to lack of resumption. The remaining 41 patients were on antithrombotics with a median (interquartile range [IQR]) international normalized ratio at ICH onset of 2.6 (1.8–3.6). Aspirin and warfarin were resumed at a median (IQR) of 5.5 (1.3–8.8) and 6.5 (4.0–15.5) days post-ICH, respectively. A continuous unfractionated heparin infusion was initiated in 16 (39.0%) patients at a median (IQR) of 2.5 (1.0–7.8) days post-ICH. During the 1-year follow-up after anticoagulation resumption, 11 (26.8%) patients suffered secondary hemorrhages and two (4.9%) suffered secondary thrombotic events. Using Kaplan–Meier method and log-rank test, we compared all patients who resumed anticoagulation by 6 days post-ICH to those who resumed after 6 days. There was no difference in freedom from secondary hemorrhagic event between the two groups (P = 0.75). Conclusion: Despite timing of resumption of antithrombotic therapy after ICH, recurrent hemorrhagic events can be expected in one-quarter of these patients over the subsequent year.
KW - Anticoagulants
KW - Antithrombotics
KW - Brain hemorrhage
KW - Intracranial hemorrhage
KW - Thrombosis
KW - Ventricular assist device
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U2 - 10.1007/s12028-019-00836-y
DO - 10.1007/s12028-019-00836-y
M3 - Article
C2 - 31531758
AN - SCOPUS:85074027149
SN - 1541-6933
VL - 32
SP - 822
EP - 827
JO - Neurocritical care
JF - Neurocritical care
IS - 3
ER -