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Vu EL, Brown CH, Brady KM, Hogue CW. Monitoring of cerebral blood flow autoregulation: physiologic basis, measurement, and clinical implications. Br J Anaesth 2024; 132:1260-1273. [PMID: 38471987 DOI: 10.1016/j.bja.2024.01.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 01/18/2024] [Accepted: 01/28/2024] [Indexed: 03/14/2024] Open
Abstract
Cerebral blood flow (CBF) autoregulation is the physiologic process whereby blood supply to the brain is kept constant over a range of cerebral perfusion pressures ensuring a constant supply of metabolic substrate. Clinical methods for monitoring CBF autoregulation were first developed for neurocritically ill patients and have been extended to surgical patients. These methods are based on measuring the relationship between cerebral perfusion pressure and surrogates of CBF or cerebral blood volume (CBV) at low frequencies (<0.05 Hz) of autoregulation using time or frequency domain analyses. Initially intracranial pressure monitoring or transcranial Doppler assessment of CBF velocity was utilised relative to changes in cerebral perfusion pressure or mean arterial pressure. A more clinically practical approach utilising filtered signals from near infrared spectroscopy monitors as an estimate of CBF has been validated. In contrast to the traditional teaching that 50 mm Hg is the autoregulation threshold, these investigations have found wide interindividual variability of the lower limit of autoregulation ranging from 40 to 90 mm Hg in adults and 20-55 mm Hg in children. Observational data have linked impaired CBF autoregulation metrics to adverse outcomes in patients with traumatic brain injury, ischaemic stroke, subarachnoid haemorrhage, intracerebral haemorrhage, and in surgical patients. CBF autoregulation monitoring has been described in both cardiac and noncardiac surgery. Data from a single-centre randomised study in adults found that targeting arterial pressure during cardiopulmonary bypass to above the lower limit of autoregulation led to a reduction of postoperative delirium and improved memory 1 month after surgery compared with usual care. Together, the growing body of evidence suggests that monitoring CBF autoregulation provides prognostic information on eventual patient outcomes and offers potential for therapeutic intervention. For surgical patients, personalised blood pressure management based on CBF autoregulation data holds promise as a strategy to improve patient neurocognitive outcomes.
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Affiliation(s)
- Eric L Vu
- Department of Anesthesiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA; The Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Charles H Brown
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kenneth M Brady
- The Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Charles W Hogue
- The Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
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2
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Wallen M, Banerjee P, Webb-McAdams A, Mirajkar A, Stead T, Ganti L. Systolic blood pressure in acute ischemic stroke and impact on clinical outcomes. J Osteopath Med 2023:jom-2022-0191. [PMID: 37043363 DOI: 10.1515/jom-2022-0191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 03/13/2023] [Indexed: 04/13/2023]
Abstract
CONTEXT Stroke is one of the largest healthcare burdens in the United States and globally. It continues to be one of the leading causes of morbidity and mortality. Patients with acute ischemic stroke (AIS) often present with elevated blood pressure (BP). OBJECTIVES The objective of our study was to evaluate the association of systolic blood pressure (SBP) in the emergency department (ED) with stroke severity in patients with AIS. METHODS This observational study was conducted at an ED with an annual census of 80,000 visits, approximately half (400) of which are for AIS. The cohort consisted of adult patients who presented to the ED within 24 h of stroke symptom onset. BP was measured at triage by a nurse blinded to the study. Stroke severity was measured utilizing the National Institutes of Health Stroke Scale (NIHSS). Statistical analyses were performed utilizing JMP 14.0. This study was approved by our medical school's institutional review board. RESULTS Patients with higher SBP had significantly lower NIHSS scores (p=0.0038). This association was significant even after adjusting for age and gender. By contrast, diastolic blood pressure (DBP) did not appear to impact stroke severity. There was no difference in the DBP values between men and women. Higher SBP was also significantly associated with being discharged home as well as being less likely to die in the hospital or discharged to hospice. The DBP did not demonstrate this association. Neither the SDP nor the DBP were significantly associated with the hospital length of stay (LOS). In multivariate models that included age, gender, basal metabolic index (BMI), comorbidities, and ED presentation, elevated SBP was associated with better prognosis. CONCLUSIONS In this cohort of patients presenting with stroke-like symptoms to the ED, higher SBP was associated with lower stroke severity and higher rates of being discharged to home rather than hospice or death.
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Affiliation(s)
| | - Paul Banerjee
- Envision Physician Services, Plantation, FL, USA
- Polk County Fire Rescue, Bartow, FL, USA
| | - Amanda Webb-McAdams
- Envision Physician Services, Plantation, FL, USA
- University of Central Florida College of Medicine/HCA GME Consortium, Orlando, FL, USA
| | - Amber Mirajkar
- Envision Physician Services, Plantation, FL, USA
- University of Central Florida College of Medicine/HCA GME Consortium, Orlando, FL, USA
| | - Tej Stead
- Brown University, Providence, RI, USA
| | - Latha Ganti
- Envision Physician Services, Plantation, FL, USA
- University of Central Florida College of Medicine/HCA GME Consortium, Orlando, FL, USA
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Liao X, Zuo L, Dong Y, Pan Y, Yan H, Meng X, Li H, Zhao X, Wang Y, Shi J, Wang Y. Persisting cognitive impairment predicts functional dependence at 1 year after stroke and transient ischemic attack: a longitudinal, cohort study. BMC Geriatr 2022; 22:1009. [PMID: 36585624 PMCID: PMC9805269 DOI: 10.1186/s12877-022-03609-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 11/11/2022] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Minor stroke or transient ischemic attack (TIA) usually have mild and nondisabling symptoms, and these functional deficits may recover fully e.g., TIA, however, part of them still suffer from cognitive impairment and poor outcomes. We conducted a study to determine the relationship between cognition evaluated by Montreal Cognitive Assessment (MoCA) and poor functional outcomes assessed by the Modified Rankin Scale (mRS) (mRS ≥ 2) and Stroke Impact Scale (SIS)-16(SIS-16<25%). METHODS The data of this study come from the impairment of cognition and Sleep (ICONS) after acute ischemic stroke or transient ischemic attack in Chinese patients study. A total of 1675 minor stroke patients and TIA patients were finally recruited. Patients' cognition were evaluated by Montreal Cognitive Assessment (MoCA) scale at 2-week (2w), 3 months (3 m) and 1 year(1y). Cognitive impairment (CI) was defined as MoCA score ≤ 22. According to MoCA score, patients were divided into 4 groups: no PSCI group: with MoCA-2w>22 and MoCA-3 m>22; improved PSCI group: with MoCA-2w ≤ 2 and MoCA-3 m>22;delayed PSCI group: MoCA-2w>22 and MoCA-3 m ≤ 22; persisting PSCI group: with MoCA-2w ≤ 22 and MoCA-3 m ≤ 22. RESULTS A total of 1675 stroke patients were recruited in this study. There were 818 patients (48.84%) who had PSCI at baseline. Of these, 123 patients (15%) had mRS ≥2 at 3 months. The persisting PSCI group was a significant predictor of functional dependence at 3 months and 1 year after stroke and when adjusted for covariates such as gender, age, history of stroke, depression and intracranial atherosclerotic stenosis, stroke subtype and acute infarction type. CONCLUSION Persisting PSCI increased the risk of poor functional outcome after 3 months and 1 year follow-up. These high-risk individuals should be identified for targeted rehabilitation and counseling to improve longer-term post-stroke outcome.
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Affiliation(s)
- Xiaoling Liao
- grid.24696.3f0000 0004 0369 153XDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, Beijing, 100070 China
| | - Lijun Zuo
- grid.24696.3f0000 0004 0369 153XDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, Beijing, 100070 China
| | - Yanhong Dong
- grid.4280.e0000 0001 2180 6431Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Clinical Research Centre, Block MD11, Level 2, 10 Medical Dr., Singapore, 117597 Singapore
| | - Yuesong Pan
- grid.24696.3f0000 0004 0369 153XNational Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Hongyi Yan
- grid.24696.3f0000 0004 0369 153XNational Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xia Meng
- grid.24696.3f0000 0004 0369 153XNational Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Hao Li
- grid.24696.3f0000 0004 0369 153XNational Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xingquan Zhao
- grid.24696.3f0000 0004 0369 153XDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, Beijing, 100070 China
| | - Yilong Wang
- grid.24696.3f0000 0004 0369 153XDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, Beijing, 100070 China
| | - Jiong Shi
- grid.24696.3f0000 0004 0369 153XDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, Beijing, 100070 China
| | - Yongjun Wang
- grid.24696.3f0000 0004 0369 153XDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, Beijing, 100070 China ,grid.24696.3f0000 0004 0369 153XNational Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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Zhang M, Wang K, Xie L, Pan X. Short-term Montreal Cognitive Assessment predicts functional outcome after endovascular therapy. Front Aging Neurosci 2022; 14:808415. [PMID: 35992595 PMCID: PMC9382115 DOI: 10.3389/fnagi.2022.808415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 07/01/2022] [Indexed: 11/24/2022] Open
Abstract
Background The previous studies have shown that cognition in patients 4–8 weeks after stroke can predict early functional outcomes after stroke. The analyses of data from the REVASCAT trial proved that stent thrombectomy improves post-morbid wiring test outcomes in patients with AIS compared with drug therapy. However, few studies focus on the relationship between cognitive impairment and functional outcomes in patients undergoing endovascular treatment. Methods A total of 647 participants registered from stroke centers. Stroke severity was evaluated by National Institutes of Health stroke scale (NIHSS). The functional status was estimated by modified Rankin scale (mRS). The cognitive impairment was assessed by trained neurologists at 14 (±4) and 90 (±7) days after stroke onset using the Montreal Cognitive Assessment (MoCA). A MoCA score of less than 26 was considered post-stroke cognitive impairment (PSCI). Results A total of 120 Patients who underwent endovascular therapy were included. The PSCI group had higher levels of age, men, educational status, atrial fibrillation, smoking, alcoholism, Alberta Stroke Program Early CT (ASPECT) score of the anterior circulation, and OTP time than the non-PSCI group (p < 0.05). In contrast, the 14-day MoCA score, 14-day NIHSS score, 3-month MoCA score, 3-month NIHSS score, 3-month mRS score, and 3-month EQ5D score were lower in those PSCI patients. The risk predictors of PSCI were age, sex, educational level, atrial fibrillation, smoking, alcoholism, ASPECT Score (anterior circulation), 14-day MoCA score, and 14-day NIHSS score. There were strong relationships between 3-month NIHSS and MoCA (r = –0.483, p < 0.001). Receiver operating characteristic (ROC) curve indicated that 14-day MoCA score, memory, abstraction, visuospatial/executive functions, attention, and language, played a significant role to predict PSCI [area under the curve (AUC) > 0.7]. It had predictive value for the 14-day visuospatial/executive functions to predict 3-month functional outcomes. Conclusion Early application of the MoCA in different cognitive regions could predict the PSCI and future functional outcomes, which is necessary to screen high-risk patients with poor prognosis and conduct an early intervention.
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A New Nomogram Model for Individualized Prediction of Cognitive Impairment in Patients with Acute Ischemic Stroke. J Stroke Cerebrovasc Dis 2022; 31:106515. [PMID: 35490470 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/24/2022] [Accepted: 04/11/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Cognitive impairment is a common symptom after ischemic stroke. Such symptom can cause effect on rehabilitation of patients and their quality of life and. As stroke rapidly growth on nowadays, a reliable scoring tool to detect the risk of cognitive impairment after stroke is now being put on the first place. METHODS We enrolled patients with acute ischemic stroke (AIS) as samples and hospitalized all at the First Affiliated Hospital of Soochow University between October 2018 and June 2020. All patients were assessed by the Montreal Cognitive Assessment (MoCA) scales and MoCA score < 26 was defined as standard to have having cognitive impairment. All patients were randomly (7:3) divided into two cohorts: the primary ones and the validated ones. Based on multivariate logistic model, the independent predictors of cognitive impairment in the acute phase were identified. The predictive nomogram was generated and evaluated by Harrell's concordance index (C-index) and calibration plot both in two cohorts, respectively. RESULTS A total of 191 patients were enrolled, of whom 135 comprised the primary cohort and 56 comprised the validated cohort. Gender, age, baseline NIHSS score, hyperhomocysteinemia (HHcy) and multiple lesions were independently associated with acute cognitive impairment after stroke and included to construct the nomogram. The nomogram derived from the primary cohort had an Area Under Curve (AUC) of 0.773 and the validated ones had an AUC of 0.859. Calibration plot revealed adequate fit of the nomogram in predictive value. CONCLUSION The new nomogram based on gender, age, baseline NIHSS score, HHcy and multiple lesions gave rise to an accurate and comprehensive prediction for cognitive impairment in AIS patients. After further validation, it could potentially be a reliable forecasting tool.
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Li S, Liao X, Pan Y, Xiang X, Zhang Y. Gamma-glutamyl transferase levels are associated with the occurrence of post-stroke cognitive impairment: a multicenter cohort study. BMC Neurol 2022; 22:65. [PMID: 35196998 PMCID: PMC8864864 DOI: 10.1186/s12883-022-02587-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 02/14/2022] [Indexed: 12/03/2022] Open
Abstract
Background Gamma-glutamyl transferase (GGT) is involved in maintenance of physiological concentrations of glutathione in cells, and protects them from oxidative stress-induced damage. However, its role in post-stroke cognitive impairment (PSCI) remains unknown. Here, we investigated the effects of serum GGT on PSCI. Methods We conducted a prospective, multicenter cohort study. A total of 1, 957 participants with a minor ischemic stroke or transient ischemic attack whose baseline GGT levels were measured were enrolled from the Impairment of Cognition and Sleep (ICONS) study of the China National Stroke Registry-3 (CNSR-3). They were categorized into four groups according to quartiles of baseline GGT levels. Cognitive functions were assessed using the Montreal Cognitive Assessment (MoCA) approach. Multiple logistic regression models were performed to evaluate the relationship between GGT and PSCI at 3 months follow-up. Results Among the 1957 participants, 671 (34.29%) patients suffered PSCI at 3 months follow-up. The highest GGT level quartile group exhibited a lower risk of PSCI in the fully adjusted model [OR (95% CI): 0.69 (0.50-0.96)], relative to the lowest group. Moreover, incorporation of GGT to the conventional model resulted in slight improvements in PSCI outcomes after 3 months (NRI: 12.00%; IDI: 0.30%). Conclusions Serum GGT levels are inversely associated with the risk of PSCI, with extremely low levels being viable risk factors for PSCI. Supplementary Information The online version contains supplementary material available at 10.1186/s12883-022-02587-4.
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Affiliation(s)
- Siqi Li
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Capital Medical University, Beijing, China
| | - Xiaoling Liao
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Capital Medical University, Beijing, China
| | - Yuesong Pan
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Capital Medical University, Beijing, China
| | - Xianglong Xiang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Capital Medical University, Beijing, China
| | - Yumei Zhang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China. .,China National Clinical Research Center for Neurological Diseases, Capital Medical University, Beijing, China. .,Department of Rehabilitation Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
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Wang W, Dong FM, Shao K, Guo SZ, Zhao ZM, Yang YM, Song YX, Wang JH. The montreal cognitive assessment and mini-mental state examination visuoexecutive subtests in acute ischemic stroke patients and their correlations with demographic and clinical factors. Acta Neurol Belg 2021; 121:1707-1714. [PMID: 33219489 DOI: 10.1007/s13760-020-01479-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/17/2020] [Indexed: 01/04/2023]
Abstract
Visuoexecutive impairment is common among acute ischemic stroke patients. This study aimed to examine the ability of the Montreal Cognitive Assessment (MoCA) and Mini-Mental State Examination (MMSE) visuoexecutive subtests to detect visuoexecutive abnormality in acute ischemic stroke patients and to identify the predictors for their impairments. 336 patients who completed the MMSE and MoCA were enrolled in this study. We compared the proportion of participants with incorrect MoCA visuoexecutive tasks and MMSE pentagon copying. Multivariate logistic regression analysis was used to evaluate the associations between the visuoexecutive dysfunction and demographic and clinical characteristics in the samples. Among all the participants, the MoCA detected more visuoexecutive dysfunction than the MMSE (88.69% vs. 45.83%, respectively; p < 0.001). The predictors identified by the univariate analysis included the factors of gender, age, educational level, smoking, alcohol consumption, Oxfordshire Community Stroke Project (OCSP), previous strokes, initial NIHSS score and number of old lacunar infarctions, while from the multivariate logistic regression analysis, the factors of age, educational level, NIHSS score, previous strokes and number of old lacunar infarctions served as predictive factors for the visuoexecutive impairment in acute stroke patients. In conclusion, visuoexecutive impairment is associated with the factors of the educational level, stroke severity, stroke history and number of old lacunar infarctions. Our findings may guide the clinicians to intervene the risks for the patients at an early stage after stroke and form the basis for good rehabilitation plans.
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He M, Cui B, Wang J, Xiao X, Wu T, Wang M, Yang R, Zhang B, Xu B, He X, Zhang G, Niu X, Li Z, Wang B, Xu B, Hui R, Wang Y. Focus on blood pressure levels and variability in the early phase of acute ischemic stroke with hypertension and carotid stenosis. J Clin Hypertens (Greenwich) 2021; 23:2089-2099. [PMID: 34783432 PMCID: PMC8696233 DOI: 10.1111/jch.14385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 10/11/2021] [Accepted: 10/23/2021] [Indexed: 01/07/2023]
Abstract
To investigate the optimal blood pressure (BP) levels and relative importance of BP and BP variability in the early phase of acute ischemic stroke (AIS) for hypertensive patients with carotid artery stenosis (CAS). A single‐center cohort study included 750 AIS patients with hypertension and tests were performed for CAS. Participants were categorized to Group 1 (SBP < 140 mm Hg and DBP < 90 mm Hg), Group 2: (SBP: 140–159 mm Hg and or DBP: 90–99 mm Hg), and Group 3: (SBP ≥160 mm Hg and/or DBP ≥100 mm Hg) according to the guidelines. The associations of mean BP levels and variability with outcomes (recurrent stroke, all‐cause death and the composite cardiovascular events) at 6 months were analyzed by Cox proportional hazard models. The associations of BP variability with BP levels and cerebral blood flow (CBF) were analyzed by linear regression and generalized additive models. Both for primary and secondary outcome, more events occurred in Group 1 compared with Group 2, while no significant difference was found in Group 3 with higher BP levels. Lower systolic BP variability showed better prognosis and higher CBF. The associations were more significant in patients with CAS ≥50%. BP variability exhibited a linear negative relationship with BP levels. In the early phase of AIS with hypertension and CAS, maintaining low blood pressure variability may be important to improve outcomes while low BP levels (SBP/DBP < 140/90 mm Hg) were harmful, especially in those patients with CAS ≥ 50%.
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Affiliation(s)
- Mingli He
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Bing Cui
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jin'e Wang
- College of Medical Science, China Three Gorges University, Yichang, Hubei, China
| | - Xiao Xiao
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Taotao Wu
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Mingyu Wang
- The Neuroelectrophysiology Department, Lianyungang Hospital, Lianyungang, Jiangsu, China
| | - Ru Yang
- The Neuroelectrophysiology Department, Lianyungang Hospital, Lianyungang, Jiangsu, China
| | - Bo Zhang
- The Medical Imaging Department, Lianyungang Hospital, Lianyungang, Jiangsu, China
| | - Bingchao Xu
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Xiaobing He
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Guanghui Zhang
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Xiaoqin Niu
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Zaipo Li
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Bei Wang
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Bei Xu
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Jiangsu, China
| | - Rutai Hui
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yibo Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Rost NS, Meschia JF, Gottesman R, Wruck L, Helmer K, Greenberg SM. Cognitive Impairment and Dementia After Stroke: Design and Rationale for the DISCOVERY Study. Stroke 2021; 52:e499-e516. [PMID: 34039035 PMCID: PMC8316324 DOI: 10.1161/strokeaha.120.031611] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Stroke is a leading cause of the adult disability epidemic in the United States, with a major contribution from poststroke cognitive impairment and dementia (PSCID), the rates of which are disproportionally high among the health disparity populations. Despite the PSCID's overwhelming impact on public health, a knowledge gap exists with regard to the complex interaction between the acute stroke event and highly prevalent preexisting brain pathology related to cerebrovascular and Alzheimer disease or related dementia. Understanding the factors that modulate PSCID risk in relation to index stroke event is critically important for developing personalized prognostication of PSCID, targeted interventions to prevent it, and for informing future clinical trial design. The DISCOVERY study (Determinants of Incident Stroke Cognitive Outcomes and Vascular Effects on Recovery), a collaborative network of thirty clinical performance clinical sites with access to acute stroke populations and the expertise and capacity for systematic assessment of PSCID will address this critical challenge. DISCOVERY is a prospective, multicenter, observational, nested-cohort study of 8000 nondemented ischemic and hemorrhagic stroke patients enrolled at the time of index stroke and followed for a minimum of 2 years, with serial cognitive evaluations and assessments of functional outcome, with subsets undergoing research magnetic resonance imaging and positron emission tomography and comprehensive genetic/genomic and fluid biomarker testing. The overall scientific objective of this study is to elucidate mechanisms of brain resilience and susceptibility to PSCID in diverse US populations based on complex interplay between life-course exposure to multiple vascular risk factors, preexisting burden of microvascular and neurodegenerative pathology, the effect of strategic acute stroke lesions, and the mediating effect of genomic and epigenomic variation.
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Affiliation(s)
- Natalia S. Rost
- J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | | | | | | | - Karl Helmer
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Boston, MA
| | - Steven M. Greenberg
- J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
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Lee KP, Chang AYW, Sung PS. Association between Blood Pressure, Blood Pressure Variability, and Post-Stroke Cognitive Impairment. Biomedicines 2021; 9:773. [PMID: 34356837 PMCID: PMC8301473 DOI: 10.3390/biomedicines9070773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/23/2021] [Accepted: 06/29/2021] [Indexed: 12/18/2022] Open
Abstract
After stroke, dynamic changes take place from necrotic-apoptotic continuum, inflammatory response to poststroke neurogenesis, and remodeling of the network. These changes and baseline brain pathology such as small vessel disease (SVD) and amyloid burden may be associated with the occurrence of early or late poststroke cognitive impairment (PSCI) or dementia (PSD), which affect not only stroke victims but also their families and even society. We reviewed the current concepts and understanding of the pathophysiology for PSCI/PSD and identified useful tools for the diagnosis and the prediction of PSCI in serological, CSF, and image characteristics. Then, we untangled their relationships with blood pressure (BP) and blood pressure variability (BPV), important but often overlooked risk factors for PSCI/PSD. Finally, we provided evidence for the modifying effects of BP and BPV on PSCI as well as pharmacological and non-pharmacological interventions and life style modification for PSCI/PSD prevention and treatment.
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Affiliation(s)
- Kang-Po Lee
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan;
- Department of Neurology, E-DA Hospital, Kaohsiung 824, Taiwan
| | - Alice Y. W. Chang
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan;
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan;
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
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Optimal blood pressure levels in different phases of peripheral thrombolysis period in acute ischemic stroke. J Hypertens 2021; 39:1453-1461. [PMID: 33560058 DOI: 10.1097/hjh.0000000000002812] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Dramatic changes of blood pressure (BP) were observed in the peripheral thrombolysis period, however, there is no consensus about BP control targets in the different phases. METHODS We retrospectively studied a consecutive sample of 510 patients treated with intravenous thrombolysis and followed-up for 3 months. The peripheral thrombolysis period was divided into these phases: Phase 1 (from onset to thrombolysis), Phase 2 (thrombolysis), Phase 3 (from thrombolysis to 24 h after thrombolysis), and Phase 4 (from 24 h to 7 days after thrombolysis). Patients were divided into quintiles according to mean blood pressure in these phases, respectively. Neurological improvement was evaluated using the modified Rankin Scale score at 3-month after thrombolysis. RESULTS Lower risk of intracerebral hemorrhage within 7 days was found in lower quintiles of SBP (OR = 0.100, 95% CI 0.011-0.887, P = 0.039 in Phase 1 quintile Q1, OR = 0.110, 95% CI 0.012-0.974, P = 0.047 in Phase 2-3 quintile Q1, and OR, 0.175, 95% CI, 0.035-0.872; P = 0.033 in Phase 4 quintile Q2, respectively). Better neurological improvement was found in SBP quintiles: Q2-Q4 (127.3-155.7 mmHg) in Phase 4 (OR = 3.095, 95% CI 1.524-6.286, P = 0.002 for Q2; OR = 2.697, 95% CI 1.354-5.370, P = 0.005 for Q3; and OR = 2.491, 95% CI 1.263-4.913, P = 0.008 for Q4, respectively). Our results also showed higher average real variability of SBP was negatively associated with better neurological outcome in Phase 1 and Phase 2-3. CONCLUSIONS Maintaining SBP levels (≤148 mmHg) from admission to the first 24 h after thrombolysis, then keeping SBP levels (127-138 mmHg) would be beneficial.
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Abstract
Early recanalization of the closed cerebral arteries after acute ischemic stroke (AIS) is the only treatment to minimize long-term disability and to reduce the associated morbidity and mortality. For a long time the only proven causal treatment of AIS was intravenous thrombolysis; however, after the publication of a series of randomized prospective studies concerning endovascular mechanical thrombectomy using stent retriever systems after AIS, new guidelines were published. It was found that endovascular treatment (EVT) dramatically improves the outcome of eligible patients. The stent retriever enables high recanalization rates by clot removal from the cerebral arterial system by means of aspiration of the thrombus via the catheter and/or by entrapping it with a stent system. The management of anesthesia during the procedure is indispensable to prevent hypoxia and hemodynamic instability; however, which form of anesthesia (i.e. general anesthesia vs. conscious sedation) is advantageous for the patient during EVT is controversially discussed. In the first studies using retrospective data conscious sedation resulted in a better outcome compared to general anesthesia following EVT; however, in prospective studies this finding could not be confirmed. To obtain optimal neurological results after AIS and EVT with general anesthesia, it is of tremendous importance not to delay the EVT due to the anesthesiology procedure. Furthermore, hypotension, hypovolemia and hypocapnia should also be strictly avoided. Finally, the optimal anesthesiological approach should be guided by the current clinical state and pre-existing comorbidities of the patient.
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Affiliation(s)
- H J Theilen
- Klinik und Poliklinik für Anästhesiologie und Intensivtherapie, Universitätsklinikum Carl-Gustav-Carus, Fetscherstr. 74, 01307, Dresden, Deutschland.
| | - J C Gerber
- Institut und Poliklinik für Neuroradiologie, Universitätsklinikum Carl-Gustav-Carus, Fetscherstr. 74, 01307, Dresden, Deutschland
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13
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Sung SF, Lin CY, Hu YH. EMR-Based Phenotyping of Ischemic Stroke Using Supervised Machine Learning and Text Mining Techniques. IEEE J Biomed Health Inform 2020; 24:2922-2931. [DOI: 10.1109/jbhi.2020.2976931] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Aam S, Einstad MS, Munthe-Kaas R, Lydersen S, Ihle-Hansen H, Knapskog AB, Ellekjær H, Seljeseth Y, Saltvedt I. Post-stroke Cognitive Impairment-Impact of Follow-Up Time and Stroke Subtype on Severity and Cognitive Profile: The Nor-COAST Study. Front Neurol 2020; 11:699. [PMID: 32765406 PMCID: PMC7379332 DOI: 10.3389/fneur.2020.00699] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/09/2020] [Indexed: 12/29/2022] Open
Abstract
Background: Post-stroke cognitive impairment (PSCI) is common, but evidence of cognitive symptom profiles, course over time, and pathogenesis is scarce. We investigated the significance of time and etiologic stroke subtype for the probability of PSCI, severity, and cognitive profile. Methods: Stroke survivors (n = 617) underwent cognitive assessments of attention, executive function, memory, language, perceptual-motor function, and the Montreal Cognitive Assessment (MoCA) after 3 and/or 18 months. PSCI was classified according to DSM-5 criteria. Stroke severity was assessed with the National Institutes of Health Stroke Scale (NIHSS). Stroke subtype was categorized as intracerebral hemorrhage (ICH), large artery disease (LAD), cardioembolic stroke (CE), small vessel disease (SVD), or un-/other determined strokes (UD). Mixed-effects logistic or linear regression was applied with PSCI, MoCA, and z-scores of the cognitive domains as dependent variables. Independent variables were time as well as stroke subtype, time, and interaction between these. The analyses were adjusted for age, education, and sex. The effects of time and stroke subtype were analyzed by likelihood ratio tests (LR). Results: Mean age was 72 years (SD 12), 42% were females, and mean NIHSS score at admittance was 3.8 (SD 4.8). Probability (95% CI) for PSCI after 3 and 18 months was 0.59 (0.51–0.66) and 0.51 (0.52–0.60), respectively and remained constant over time. Global measures and most cognitive domains were assessed as impaired for the entire stroke population and for most stroke subtypes. Executive function and language improved for the entire stroke population (LR) = 9.05, p = 0.003, and LR = 10.38, p = 0.001, respectively). After dividing the sample according to stroke subtypes, language improved for ICH patients (LR = 18.02, p = 0.003). No significant differences were found in the severity of impairment between stroke subtypes except for attention, which was impaired for LAD and CE in contrast to no impairment for SVD (LR = 56.58, p < 0.001). Conclusions: In this study including mainly minor strokes, PSCI is common for all subtypes, both early and long-term after stroke, while executive function and language improve over time. The findings might contribute to personalizing follow-up and offer new insights into underlying mechanisms. Further research is needed on underlying mechanisms, PSCI prevention and treatment, and relevance for rehabilitation.
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Affiliation(s)
- Stina Aam
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Science, NTNU-Norwegian University of Science and Technology, Trondheim, Norway.,Department of Geriatric Medicine, Clinic of Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Marte Stine Einstad
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Science, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Ragnhild Munthe-Kaas
- Department of Medicine, Vestre Viken Hospital Trust, Bærum Hospital, Drammen, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Stian Lydersen
- Department of Mental Health, Faculty of Medicine and Health Science, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
| | - Hege Ihle-Hansen
- Department of Medicine, Vestre Viken Hospital Trust, Bærum Hospital, Drammen, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway
| | | | - Hanne Ellekjær
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Science, NTNU-Norwegian University of Science and Technology, Trondheim, Norway.,Stroke Unit, Department of Internal Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Yngve Seljeseth
- Medical Department, Ålesund Hospital, Møre and Romsdal Health Trust, Ålesund, Norway
| | - Ingvild Saltvedt
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Science, NTNU-Norwegian University of Science and Technology, Trondheim, Norway.,Department of Geriatric Medicine, Clinic of Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
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Levine DA, Galecki AT, Okullo D, Briceño EM, Kabeto MU, Morgenstern LB, Langa KM, Giordani B, Brook R, Sanchez BN, Lisabeth LD. Association of Blood Pressure and Cognition after Stroke. J Stroke Cerebrovasc Dis 2020; 29:104754. [PMID: 32370925 DOI: 10.1016/j.jstrokecerebrovasdis.2020.104754] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 01/29/2020] [Accepted: 02/10/2020] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND AND AIM It is unclear whether blood pressure (BP) is associated with cognition after stroke. We examined associations between systolic and diastolic BP (SBP, DBP), pulse pressure (PP), mean arterial pressure (MAP), and cognition, each measured 90 days after stroke. METHODS Cross-sectional analysis of prospectively obtained data of 432 dementia-free subjects greater than or equal to 45 (median age, 66; 45% female) with stroke (92% ischemic; median NIH stroke score, 3 [IQR, 2-6]) from the population-based Brain Attack Surveillance in Corpus Christi (BASIC) project in 2011-2013. PRIMARY OUTCOME Modified Mini-Mental Status Examination (3MSE; range, 0-100). SECONDARY OUTCOMES Animal Fluency Test (AFT; range, 0-10) and Trail Making Tests A and B (number of correct items [range, 0-25]/completion time [Trails A: 0-180 seconds; Trails B: 0-300 second]). Linear or tobit regression adjusted associations for age, education, and race/ethnicity as well as variables significantly associated with BP and cognition. RESULTS Higher SBP, lower DBP, higher PP, and lower MAP each were associated with worse cognitive performance for all 4 tests (all P < .001). After adjusting for patient factors, no BP measures were associated with any of the 4 tests (all P > .05). Lower cognitive performance was associated with older age, less education, Mexican American ethnicity, diabetes, higher stroke severity, more depressive symptoms, and lower BMI. Among survivors with hypertension, anti-hypertensive medication use 90 days after stroke was significantly associated with higher AFT scores (P = .02) but not other tests (P > .15). CONCLUSIONS Stroke survivors' BP levels were not associated with cognitive performance at 90 days independent of sociodemographic and clinical factors.
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Affiliation(s)
- Deborah A Levine
- Departments of Internal Medicine and Neurology, and University of Michigan Cognitive Health Services Research Program, University of Michigan Medical School, Ann Arbor, Michigan.
| | - Andrzej T Galecki
- Department of Internal Medicine, University of Michigan Medical School, and Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan
| | - Dolorence Okullo
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan
| | - Emily M Briceño
- Department of Physical Medicine and Rehabilitation, University of Michigan Medical School, Ann Arbor, Michigan
| | - Mohammed U Kabeto
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan
| | | | - Kenneth M Langa
- Department of Internal Medicine, University of Michigan Medical School and VA Ann Arbor Healthcare System, Ann Arbor, Michigan
| | - Bruno Giordani
- Departments of Psychiatry and Neurology, University of Michigan Medical School, Professor of Psychology, University of Michigan College of Literature, Science, and the Arts, Ann Arbor, Michigan
| | - Robert Brook
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan
| | - Brisa N Sanchez
- Department of Epidemiology and Biostatistics, Drexel University, Dornsife School of Public Health, Philadelphia, Pennsylvania
| | - Lynda D Lisabeth
- Department of Neurology, University of Michigan Medical School, and Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan
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Recombinant Human Growth Hormone Ameliorates Cognitive Impairment in Stroke Patients. J Comput Assist Tomogr 2020; 44:255-261. [PMID: 32195805 DOI: 10.1097/rct.0000000000000990] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
OBJECTIVE We aimed to determine the effects of recombinant human growth hormone (rhGH) replacement on cognitive function in subjects with poststroke cognitive impairment using resting-state functional magnetic resonance imaging. METHODS We included 60 patients with a first-ever stroke for 3 months and a diagnosis of cognitive impairment who were randomized 1:1 to receive either rhGH subcutaneously or placebo injection for 6 months. All subjects were required to receive the same rehabilitative therapy program. Both groups were subjected to pretreatment and posttreatment neuropsychological assessment using the Montreal Cognitive Assessment, serum neurotrophic factors, biomarkers of glucose and lipid metabolism, and functional magnetic resonance imaging during 6 months of the study period. The pattern of brain activity was determined by examining the functional connectivity and amplitude of low-frequency fluctuations (ALFF) of blood oxygen level dependent signal. RESULTS Forty-three (82.7%) completed the study. Treatment with rhGH reduced levels of triglycerides and low-density lipoprotein cholesterol but did not significantly altered plasma concentrations of glucose and glycated hemoglobin. We found a significant increase in serum insulin-like growth factor 1 levels (32.6%; P < 0.001) in the rhGH-treated group compared with that in the controls. After 6 months of rhGH treatment, mean Montreal Cognitive Assessment score improved from 16.31 (5.32) to 21.19 (6.54) (P < 0.001). The rhGH group showed significant increased area of activation with increased ALFF values in the regions of the frontal lobe, putamen, temporal lobe, and thalamus (P < 0.05), relative to the baseline conditions. The correlation analysis revealed that the ALFF and functional connectivity of default mode network was positively correlated with the ΔMoCA score and ΔIGF-1 levels; that is, the more the scale score increased, the higher the functional connection strength. No undesirable adverse effects were observed. CONCLUSIONS The rhGH replacement has a significant impact on global and domain cognitive functions in poststroke cognitive impairment.
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Marzolini S, Robertson AD, Oh P, Goodman JM, Corbett D, Du X, MacIntosh BJ. Aerobic Training and Mobilization Early Post-stroke: Cautions and Considerations. Front Neurol 2019; 10:1187. [PMID: 31803129 PMCID: PMC6872678 DOI: 10.3389/fneur.2019.01187] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 10/25/2019] [Indexed: 12/14/2022] Open
Abstract
Knowledge gaps exist in how we implement aerobic exercise programs during the early phases post-stroke. Therefore, the objective of this review was to provide evidence-based guidelines for pre-participation screening, mobilization, and aerobic exercise training in the hyper-acute and acute phases post-stroke. In reviewing the literature to determine safe timelines of when to initiate exercise and mobilization we considered the following factors: arterial blood pressure dysregulation, cardiac complications, blood-brain barrier disruption, hemorrhagic stroke transformation, and ischemic penumbra viability. These stroke-related impairments could intensify with inappropriate mobilization/aerobic exercise, hence we deemed the integrity of cerebral autoregulation to be an essential physiological consideration to protect the brain when progressing exercise intensity. Pre-participation screening criteria are proposed and countermeasures to protect the brain from potentially adverse circulatory effects before, during, and following mobilization/exercise sessions are introduced. For example, prolonged periods of standing and static postures before and after mobilization/aerobic exercise may elicit blood pooling and/or trigger coagulation cascades and/or cerebral hypoperfusion. Countermeasures such as avoiding prolonged standing or incorporating periodic lower limb movement to activate the venous muscle pump could counteract blood pooling after an exercise session, minimize activation of the coagulation cascade, and mitigate potential cerebral hypoperfusion. We discuss patient safety in light of the complex nature of stroke presentations (i.e., type, severity, and etiology), medical history, comorbidities such as diabetes, cardiac manifestations, medications, and complications such as anemia and dehydration. The guidelines are easily incorporated into the care model, are low-risk, and use minimal resources. These and other strategies represent opportunities for improving the safety of the activity regimen offered to those in the early phases post-stroke. The timeline for initiating and progressing exercise/mobilization parameters are contingent on recovery stages both from neurobiological and cardiovascular perspectives, which to this point have not been specifically considered in practice. This review includes tailored exercise and mobilization prescription strategies and precautions that are not resource intensive and prioritize safety in stroke recovery.
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Affiliation(s)
- Susan Marzolini
- KITE, Toronto Rehab-University Health Network, Toronto, ON, Canada.,Department of Exercise Sciences, Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada.,Canadian Partnership for Stroke Recovery, Toronto, ON, Canada
| | - Andrew D Robertson
- Schlegel-University of Waterloo Research Institute for Aging, University of Waterloo, Waterloo, ON, Canada.,Department of Kinesiology, University of Waterloo, Waterloo, ON, Canada
| | - Paul Oh
- KITE, Toronto Rehab-University Health Network, Toronto, ON, Canada.,Department of Exercise Sciences, Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada.,Canadian Partnership for Stroke Recovery, Toronto, ON, Canada
| | - Jack M Goodman
- KITE, Toronto Rehab-University Health Network, Toronto, ON, Canada.,Department of Exercise Sciences, Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
| | - Dale Corbett
- Canadian Partnership for Stroke Recovery, Toronto, ON, Canada.,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Xiaowei Du
- KITE, Toronto Rehab-University Health Network, Toronto, ON, Canada.,School of Kinesiology and Health Studies, Queen's University, Kingston, ON, Canada
| | - Bradley J MacIntosh
- Canadian Partnership for Stroke Recovery, Toronto, ON, Canada.,Sunnybrook Health Sciences Center, Toronto, ON, Canada
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Hou L, Ding C, Chen Z, Liu Y, Shi H, Zou C, Zhang H, Lu Z, Zheng D. Serum Retinoic Acid Level and The Risk of Poststroke Cognitive Impairment in Ischemic Stroke Patients. J Stroke Cerebrovasc Dis 2019; 28:104352. [DOI: 10.1016/j.jstrokecerebrovasdis.2019.104352] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 08/07/2019] [Accepted: 08/14/2019] [Indexed: 12/01/2022] Open
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Hypertension and Its Impact on Stroke Recovery: From a Vascular to a Parenchymal Overview. Neural Plast 2019; 2019:6843895. [PMID: 31737062 PMCID: PMC6815533 DOI: 10.1155/2019/6843895] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 08/30/2019] [Indexed: 12/14/2022] Open
Abstract
Hypertension is the first modifiable vascular risk factor accounting for 10.4 million deaths worldwide; it is strongly and independently associated with the risk of stroke and is related to worse prognosis. In addition, hypertension seems to be a key player in the implementation of vascular cognitive impairment. Long-term hypertension, complicated or not by the occurrence of ischemic stroke, is often reviewed on its vascular side, and parenchymal consequences are put aside. Here, we sought to review the impact of isolated hypertension or hypertension associated to stroke on brain atrophy, neuron connectivity and neurogenesis, and phenotype modification of microglia and astrocytes. Finally, we discuss the impact of antihypertensive therapies on cell responses to hypertension and functional recovery. This attractive topic remains a focus of continued investigation and stresses the relevance of including this vascular risk factor in preclinical investigations of stroke outcome.
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