Risk of Long-Term Ischemic Stroke in Patients With Traumatic Brain Injury and Incident Hypertension

Traumatic brain injury (TBI) is independently associated with hypertension and ischemic stroke. The goal of this study was to determine the interplay between TBI and incident hypertension in the occurrence of post-TBI stroke. This prospective study used a hospital-based registry to identify patients...

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Main Authors: Farid Radmanesh, Saef Izzy, Ran S. Rotem, Zabreen Tahir, Quinn J. Rademaker, Taha Yahya, Ahmad Mashlah, Herman A. Taylor, Marc G. Weisskopf, Ross D. Zafonte, Aaron L. Baggish, Rachel Grashow
Format: Article
Language:English
Published: Mary Ann Liebert 2024-11-01
Series:Neurotrauma Reports
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Online Access:https://www.liebertpub.com/doi/10.1089/neur.2024.0015
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author Farid Radmanesh
Saef Izzy
Ran S. Rotem
Zabreen Tahir
Quinn J. Rademaker
Taha Yahya
Ahmad Mashlah
Herman A. Taylor
Marc G. Weisskopf
Ross D. Zafonte
Aaron L. Baggish
Rachel Grashow
author_facet Farid Radmanesh
Saef Izzy
Ran S. Rotem
Zabreen Tahir
Quinn J. Rademaker
Taha Yahya
Ahmad Mashlah
Herman A. Taylor
Marc G. Weisskopf
Ross D. Zafonte
Aaron L. Baggish
Rachel Grashow
author_sort Farid Radmanesh
collection DOAJ
description Traumatic brain injury (TBI) is independently associated with hypertension and ischemic stroke. The goal of this study was to determine the interplay between TBI and incident hypertension in the occurrence of post-TBI stroke. This prospective study used a hospital-based registry to identify patients without pre-existing comorbidities. TBI patients (n = 3664) were frequency matched on age, sex, and race to non-TBI patients (n = 1848). Follow-up started 6 months post-TBI or study entry and extended up to 10 years. To examine hypertension's role in post-TBI stroke, we used logistic regression models to calculate the effect estimates for stroke in four exposure categories that included TBI or hypertension in isolation and in combination. Second, we calculated the conditional direct effect (CDE) of TBI in models that considered hypertension as intermediary. Third, we examined whether TBI effect was modified by antihypertensive medication use. The 10-year cumulative incidence of stroke was higher in the TBI group (4.7%) than the non-TBI group (1.3%; p < 0.001). TBI patients who developed hypertension had the highest risk of stroke (odds ratio [OR] = 4.83, 95% confidence interval [CI] = 2.53–9.23, p < 0.001). The combined effect estimates were less than additive, suggesting an overlapping biological pathway. The total effect of TBI (OR = 3.16, 95% CI = 1.94–5.16, p < 0.001) was higher than the CDE that accounted for hypertension (OR = 2.45, 95% CI = 0.93–6.47, p = 0.06). Antihypertensives attenuated the TBI effect, suggesting that the TBI effect on stroke is partially mediated through hypertension. TBI is an independent risk factor for long-term stroke, and the underlying biological pathway may partly operate through TBI-precipitated hypertension. These findings suggest that screening for hypertension may mitigate stroke risk in TBI.
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spelling doaj-art-9af7b4342ba843cfbbaf2e30be40e2882025-08-20T03:49:37ZengMary Ann LiebertNeurotrauma Reports2689-288X2024-11-015146246610.1089/neur.2024.0015Risk of Long-Term Ischemic Stroke in Patients With Traumatic Brain Injury and Incident HypertensionFarid Radmanesh0Saef Izzy1Ran S. Rotem2Zabreen Tahir3Quinn J. Rademaker4Taha Yahya5Ahmad Mashlah6Herman A. Taylor7Marc G. Weisskopf8Ross D. Zafonte9Aaron L. Baggish10Rachel Grashow11Divisions of Stroke, Cerebrovascular and Critical Care Neurology, Department of Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.Divisions of Stroke, Cerebrovascular and Critical Care Neurology, Department of Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.Divisions of Stroke, Cerebrovascular and Critical Care Neurology, Department of Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.Divisions of Stroke, Cerebrovascular and Critical Care Neurology, Department of Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.Divisions of Stroke, Cerebrovascular and Critical Care Neurology, Department of Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.Divisions of Stroke, Cerebrovascular and Critical Care Neurology, Department of Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.Football Players Health Study at Harvard University, Boston, Massachusetts, USA.Football Players Health Study at Harvard University, Boston, Massachusetts, USA.Football Players Health Study at Harvard University, Boston, Massachusetts, USA.Football Players Health Study at Harvard University, Boston, Massachusetts, USA.Football Players Health Study at Harvard University, Boston, Massachusetts, USA.Traumatic brain injury (TBI) is independently associated with hypertension and ischemic stroke. The goal of this study was to determine the interplay between TBI and incident hypertension in the occurrence of post-TBI stroke. This prospective study used a hospital-based registry to identify patients without pre-existing comorbidities. TBI patients (n = 3664) were frequency matched on age, sex, and race to non-TBI patients (n = 1848). Follow-up started 6 months post-TBI or study entry and extended up to 10 years. To examine hypertension's role in post-TBI stroke, we used logistic regression models to calculate the effect estimates for stroke in four exposure categories that included TBI or hypertension in isolation and in combination. Second, we calculated the conditional direct effect (CDE) of TBI in models that considered hypertension as intermediary. Third, we examined whether TBI effect was modified by antihypertensive medication use. The 10-year cumulative incidence of stroke was higher in the TBI group (4.7%) than the non-TBI group (1.3%; p < 0.001). TBI patients who developed hypertension had the highest risk of stroke (odds ratio [OR] = 4.83, 95% confidence interval [CI] = 2.53–9.23, p < 0.001). The combined effect estimates were less than additive, suggesting an overlapping biological pathway. The total effect of TBI (OR = 3.16, 95% CI = 1.94–5.16, p < 0.001) was higher than the CDE that accounted for hypertension (OR = 2.45, 95% CI = 0.93–6.47, p = 0.06). Antihypertensives attenuated the TBI effect, suggesting that the TBI effect on stroke is partially mediated through hypertension. TBI is an independent risk factor for long-term stroke, and the underlying biological pathway may partly operate through TBI-precipitated hypertension. These findings suggest that screening for hypertension may mitigate stroke risk in TBI.https://www.liebertpub.com/doi/10.1089/neur.2024.0015hypertensionstroketraumatic brain injury
spellingShingle Farid Radmanesh
Saef Izzy
Ran S. Rotem
Zabreen Tahir
Quinn J. Rademaker
Taha Yahya
Ahmad Mashlah
Herman A. Taylor
Marc G. Weisskopf
Ross D. Zafonte
Aaron L. Baggish
Rachel Grashow
Risk of Long-Term Ischemic Stroke in Patients With Traumatic Brain Injury and Incident Hypertension
Neurotrauma Reports
hypertension
stroke
traumatic brain injury
title Risk of Long-Term Ischemic Stroke in Patients With Traumatic Brain Injury and Incident Hypertension
title_full Risk of Long-Term Ischemic Stroke in Patients With Traumatic Brain Injury and Incident Hypertension
title_fullStr Risk of Long-Term Ischemic Stroke in Patients With Traumatic Brain Injury and Incident Hypertension
title_full_unstemmed Risk of Long-Term Ischemic Stroke in Patients With Traumatic Brain Injury and Incident Hypertension
title_short Risk of Long-Term Ischemic Stroke in Patients With Traumatic Brain Injury and Incident Hypertension
title_sort risk of long term ischemic stroke in patients with traumatic brain injury and incident hypertension
topic hypertension
stroke
traumatic brain injury
url https://www.liebertpub.com/doi/10.1089/neur.2024.0015
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