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Impact of Exercise on Cerebrovascular Physiology and Risk of Stroke.

ABSTRACT: Ischemic heart disease and stroke are the number 1 and number 2 causes of death worldwide, respectively. A lifelong commitment to exercise reduces the risk of these adverse events and is also associated with several cardiometabolic improvements, including reductions in blood pressure, cholesterol, and inflammatory markers, as well as improved glucose control. Routine exercise also reduces the risk of developing comorbidities that increase the risk of cardiovascular or cerebrovascular disease. While the benefits of a lifelong commitment to exercise are well documented, there is a complex interaction between exercise and stroke risk, such that the risk of ischemic or hemorrhagic stroke may increase acutely during or immediately following exercise. In this article, we discuss the physiological responses to different types of exercise, as well as the determinants of resting and exertional cerebrovascular perfusion, and explore the complex interaction between atrial fibrillation, exercise, and stroke risk. Finally, we highlight the increased risk of stroke during different types of exercise, as well as factors that may alleviate this risk.

SUBMITTER: Edward JA

PROVIDER: S-EPMC9246957 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature

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Impact of Exercise on Cerebrovascular Physiology and Risk of Stroke.

Edward Justin A JA Cornwell William K WK

Stroke 20220504 7

Ischemic heart disease and stroke are the number 1 and number 2 causes of death worldwide, respectively. A lifelong commitment to exercise reduces the risk of these adverse events and is also associated with several cardiometabolic improvements, including reductions in blood pressure, cholesterol, and inflammatory markers, as well as improved glucose control. Routine exercise also reduces the risk of developing comorbidities that increase the risk of cardiovascular or cerebrovascular disease. Wh ...[more]

PMID: 35506387

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Project description:OBJECTIVES:To assess whether microemboli burden, assessed noninvasively by bedside transcranial Doppler ultrasonography, correlates with risk of subsequent stroke greater than 24 hours after hospital arrival among patients with blunt cerebrovascular injury. The greater than 24-hour time frame provides a window for transcranial Doppler examinations and therapeutic interventions to prevent stroke. DESIGN:Retrospective cohort study. SETTING:Level I trauma center. PATIENTS:One thousand one hundred forty-six blunt cerebrovascular injury patients over 10 years. INTERVENTIONS:None. MEASUREMENTS AND MAIN RESULTS:We identified 1,146 blunt cerebrovascular injury patients; 54 (4.7%) experienced stroke detected greater than 24 hours after arrival. Among those with isolated internal carotid artery injuries, five of nine with delayed stroke had positive transcranial Dopplers (at least one microembolus detected with transcranial Dopplers) before stroke, compared with 46 of 248 without (risk ratio, 5.05; 95% CI, 1.41-18.13). Stroke risk increased with the number of microemboli (adjusted risk ratio, 1.03/microembolus/hr; 95% CI, 1.01-1.05) and with persistently positive transcranial Dopplers over multiple days (risk ratio, 16.0; 95% CI, 2.00-127.93). Among patients who sustained an internal carotid artery injury with or without additional vessel injuries, positive transcranial Dopplers predicted stroke after adjusting for ipsilateral and contralateral internal carotid artery injury grade (adjusted risk ratio, 2.91; 95% CI, 1.42-5.97). No patients with isolated vertebral artery injuries had positive transcranial Dopplers before stroke, and positive transcranial Dopplers were not associated with delayed stroke among patients who sustained a vertebral artery injury with or without additional vessel injuries (risk ratio, 0.90; 95% CI, 0.21-3.83). CONCLUSIONS:Microemboli burden is associated with higher risk of stroke due to internal carotid artery injuries, but monitoring was not useful for vertebral artery injuries.

Dataset Information

Impact of Exercise on Cerebrovascular Physiology and Risk of Stroke.

Publications

Impact of Exercise on Cerebrovascular Physiology and Risk of Stroke.

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