1
|
Brewer PC, Ojo DT, Broughton PX, Imeh-Nathaniel A, Imeh-Nathaniel S, Nathaniel TI. Risk Factors Associated With Exclusion of Obese Patients Ischemic Stroke With a History of Smoking From Thrombolysis Therapy. Clin Appl Thromb Hemost 2024; 30:10760296241246264. [PMID: 38600881 PMCID: PMC11010763 DOI: 10.1177/10760296241246264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 04/12/2024] Open
Abstract
The objective of this study is to determine risk factors that may contribute to exclusion decision from recombinant tissue plasminogen activator (rtPA) in patients with acute ischemic stroke (AIS) with a combined current or history of smoking and obesity. This study was conducted on data from 5469 patients with AIS collected from a regional stroke registry. Risk factors associated with inclusion or exclusion from rtPA were determined using multivariate logistic regression analysis. The adjusted odds ratios and 95% confidence interval for each risk factor were used to predict the increasing odds of an association of a specific risk factor with exclusion from rtPA. In the adjusted analysis, obese patients with AIS with a history of smoking (current and previous) excluded from rtPA were more likely to present with carotid artery stenosis (OR = 0.069, 95% CI 0.011-0.442), diabetes (OR = 0.604, 95% CI 0.366-0.997), higher total cholesterol (OR = 0.975, 95% CI 0.956-0.995), and history of alcohol use (OR = 0.438, 95% CI 0.232-0.828). Higher NIHSS score (OR = 1.051, 95% CI 1.017-1.086), higher triglycerides (OR = 1.004, 95% CI 1.001-1.006), and higher high-density lipoprotein (OR = 1.028, 95% CI 1.000-1.057) were associated with the inclusion for rtPA. Our findings reveal specific risk factors that contribute to the exclusion of patients with AIS with a combined effect of smoking and obesity from rtPA. These findings suggest the need to develop management strategies to improve the use of rtPA for obese patients with AIS with a history of smoking.
Collapse
Affiliation(s)
- Philip C. Brewer
- Department of Biomedical Sciences, University of South Carolina, School of Medicine-Greenville, Greenville, SC, USA
| | - Dami T. Ojo
- Department of Biomedical Sciences, University of South Carolina, School of Medicine-Greenville, Greenville, SC, USA
| | - Philip X. Broughton
- Department of Biomedical Sciences, University of South Carolina, School of Medicine-Greenville, Greenville, SC, USA
| | | | | | - Thomas I. Nathaniel
- Department of Biomedical Sciences, University of South Carolina, School of Medicine-Greenville, Greenville, SC, USA
| |
Collapse
|
2
|
Brown C, Terrell K, Goodwin R, Nathaniel T. Stroke Severity in Ischemic Stroke Patients with a History of Diastolic Blood Pressure Treated in a Telestroke Network. J Cardiovasc Dev Dis 2022; 9:jcdd9100345. [PMID: 36286297 PMCID: PMC9604184 DOI: 10.3390/jcdd9100345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/26/2022] [Accepted: 10/05/2022] [Indexed: 11/23/2022] Open
Abstract
Background: The relationship between diastolic blood pressure (DBP), risk factors, and stroke severity in acute ischemic stroke (AIS) patients treated in a telestroke network is not fully understood. The present study aims to determine the effect of risk factors on stroke severity in AIS patients with a history of elevated DBP. Material and Methods: We retrospectively analyzed data on stroke severity for AIS patients treated between January 2014 and June 2016 treated in the PRISMA Health telestroke network. Data on the severity of stroke on admission were evaluated using NIHSS scores ≤7 for reduced, and >7 for increased, stroke severity. DBP was stratified as ≤80 mmHg for reduced DBP and >80 mmHg for elevated DBP. The study’s primary outcomes were risk factors associated with improving neurologic functions or reduced stroke severity and deteriorating neurologic functions or increased stroke severity. The associations between risk factors and stroke severity for AIS with elevated DBP were determined using multi-level logistic and regression models. Results: In the adjusted analysis, AIS patients with a DBP ≤ 80 mmHg, obesity (OR = 0.388, 95% Cl, 0.182−0.828, p = 0.014) was associated with reduced stroke severity, while an increased heart rate (OR = 1.025, 95% Cl, 1.001−1.050, p = 0.042) was associated with higher stroke severity. For AIS patients with a DBP > 80 mmHg, hypertension (OR = 3.453, 95% Cl, 1.137−10.491, p = 0.029), history of smoking (OR = 2.55, 95% Cl, 1.06−6.132, p = 0.037), and heart rate (OR = 1.036, 95% Cl, 1.009−1.064, p = 0.009) were associated with higher stroke severity. Caucasians (OR = 0.294, 95% Cl, 0.090−0.964, p = 0.002) and obesity (OR = 0.455, 95% Cl, 0.207−1.002, p = 0.05) were more likely to be associated with reduced stroke severity. Conclusions: Our findings reveal specific risk factors that can be managed to improve the care of AIS patients with elevated DBP treated in the telestroke network.
Collapse
Affiliation(s)
- Christina Brown
- Department of Biology, College of Charleston, Charleston, SC 29424, USA
| | - Kameron Terrell
- Department of Biology, College of Charleston, Charleston, SC 29424, USA
| | - Richard Goodwin
- Department of Biology, College of Charleston, Charleston, SC 29424, USA
- School of Medicine Greenville, University of South Carolina, Greenville, SC 29605, USA
| | - Thomas Nathaniel
- School of Medicine Greenville, University of South Carolina, Greenville, SC 29605, USA
- Correspondence:
| |
Collapse
|
3
|
Knisely K, Sanders CB, Edrissi C, Rathfoot C, Poupore N, Bailey-Taylor MJ, Stewart B, Nathaniel T. Retrospective analysis of comorbidities in stroke patients with a history of obstructive sleep apnea treated with thrombolytic therapy. JOURNAL OF VASCULAR NURSING 2022; 40:74-85. [DOI: 10.1016/j.jvn.2022.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/22/2021] [Accepted: 01/24/2022] [Indexed: 10/19/2022]
|
4
|
Okon M, Blum B, Nathaniel TI. Risk factors and ambulatory outcome in ischemic stroke patients with pre-stroke depression. JOURNAL OF VASCULAR NURSING 2021; 39:91-99. [PMID: 34865727 DOI: 10.1016/j.jvn.2021.07.004] [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: 10/09/2020] [Revised: 04/25/2021] [Accepted: 07/19/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE It is well known that post-stroke depression might be a negative factor for stroke recovery, however there is limited evidence to establish the link between pre-stroke depression and stroke outcome such motor recovery. The objective is to determine clinical risk factors in ischemic stroke patients with pre-stroke depression that are associated functional ambulatory outcome. METHODS Data from acute ischemic patients from a regional stroke registry were collected for consecutive recombinant tissue plasminogen activator(rtPA)-treated acute ischemic stroke patients between January 2010 and June 2016. Logistic regression model was used to predict risk factors that served as predictive variables, while the increase or reduce odds of improvement in ambulatory outcome was considered as the primary outcome. Multicollinearity and possible interactions among the independent variables were analyzed using the variance inflation factor. RESULTS A total of 1446 patients were eligible for recombinant tissue plasminogen activator (rtPA) and 596 of these patients received rtPA. Of the 596 ischemic stroke patients, 286 patients presented with recent pre-stroke depression, 310 had no pre-stroke depression. Carotid artery stenosis (OR = 11.577, 95% CI, 1.281-104.636, P = 0.029) and peripheral vascular disease (OR = 18.040, 95% CI, 2.956-110.086, P = 0.002) were more likely to be associated with increase odds of improvement in ambulation in patients with no pre-stroke depression treated with rtPA, while antihypertensive medications (OR = 0.192, 95% CI, 0.035-1.067, P = 0.050),previous TIA (OR = 0.177, 95% CI, 0.038-0.818, P = 0.027), and congestive heart failure (OR = 0. 0.160, 95% CI, 0.030-0.846, P = 0.031) were associated with reduced odds of improvement in ambulation. In addition, carotid artery stenosis (OR = 0.078, 95% CI, 0.10-0.614, P = 0.015, congestive heart failure (OR = 0.217, 95% CI, 0.318-0.402, P = 0.030), previous TIA (OR = 0.444, 95% CI, 0.517-0.971, P = 0.012), higher NIHSS scores ((OR = 0.887, 95% CI, 0.830-0.948, P < 0.001), and antihypertensive medications (OR = 0.810, 95% CI, 0.401-0.529, P = 0.019) were associated with the reduced odd of improvement in ambulation in an ischemic stroke population with pre-stroke depression treated with rtPA. CONCLUSION Our findings indicate that more risk factors were associated with the decreased odds of an improvement in ambulation following thrombolytic therapy in an ischemic stroke population with pre-stroke depression when compared with those without pre-stroke depression. This finding maybe helpful in the development of management strategies to increase the use of thrombolytic therapy for pre-stroke depressed ischemic stroke to increased their eligibility for rtPA.
Collapse
Affiliation(s)
- Marvin Okon
- Department of Public Health, Clemson University, Clemson, SC 29631
| | - Brice Blum
- University of South Carolina School of Medicine, School of Medicine-Greenville, Greenville, SC 29605, USA
| | - Thomas I Nathaniel
- University of South Carolina School of Medicine, School of Medicine-Greenville, Greenville, SC 29605, USA.
| |
Collapse
|
5
|
Poupore N, Okon M, Mackey T, Nathaniel TI. Pre-stroke factors (morbitities, diet, medication, demograhics) that affect the severity of a stroke. THROMBOSIS UPDATE 2021. [DOI: 10.1016/j.tru.2021.100073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
6
|
Edrissi C, Rathfoot C, Knisely K, Sanders CB, Poupore N, Nathaniel T. Gender disparity in a cohort of stroke patients with incidence of obstructive sleep apnea. JOURNAL OF VASCULAR NURSING 2021; 40:17-27. [DOI: 10.1016/j.jvn.2021.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 08/31/2021] [Accepted: 10/02/2021] [Indexed: 12/29/2022]
|
7
|
Poupore N, Chosed R, Arce S, Rainer R, Goodwin RL, Nathaniel TI. Metabolomic Profiles of Men and Women Ischemic Stroke Patients. Diagnostics (Basel) 2021; 11:diagnostics11101786. [PMID: 34679483 PMCID: PMC8534835 DOI: 10.3390/diagnostics11101786] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 12/02/2022] Open
Abstract
Background: Stroke is known to affect both men and women; however, incidence and outcomes differ between them. Therefore, the discovery of novel, sex-specific, blood-based biomarkers for acute ischemic stroke (AIS) patients has the potential to enhance the understanding of the etiology of this deadly disease in the content of sex. The objective of this study was to identify serum metabolites associated with male and female AIS patients. Methods: Metabolites were measured with the use of untargeted, reverse-phase ultra-performance liquid chromatography-tandem mass spectrometry quantification from blood specimens collected from AIS patients. Samples were collected from 36 patients comprising each of 18 men and women with matched controls. Metabolic pathway analysis and principal component analysis (PCA) was used to differentiate metabolite profiles for male and female AIS patients from the control, while logistic regression was used to determine differences in metabolites between male and female AIS patients. Results: In female AIS patients, 14 distinct altered metabolic pathways and 49 corresponding metabolites were identified, while 39 metabolites and 5 metabolic pathways were identified in male patients. Metabolites that are predictive of ischemic stroke in female patients were 1-(1-enyl-palmitoyl)-2-arachidonoyl-GPC (P-16:0/20:4) (AUC = 0.914, 0.765–1.000), 1-(1-enyl-palmitoyl)-2-palmitoyl-GPC (P-16:0/16:0) (AUC = 0.840, 0.656–1.000), and 5,6-dihydrouracil (P-16:0/20:2) (AUC = 0.815, 0.601–1.000). Significant metabolites that were predictive of stroke in male patients were 5alpha-androstan-3alpha,17beta-diol disulfate (AUC = 0.951, 0.857–1.000), alpha-hydroxyisocaproate (AUC = 0.938, 0.832–1.000), threonate (AUC = 0.877, 0.716–1.000), and bilirubin (AUC = 0.817, 0.746–1.000). Conclusions: In the current study, the untargeted serum metabolomics platform identified multiple pathways and metabolites associated with male and female AIS patients. Further research is necessary to characterize how these metabolites are associated with the pathophysiology in male and female AIS patients.
Collapse
Affiliation(s)
- Nicolas Poupore
- School of Medicine Greenville, University of South Carolina, Greenville, SC 29605, USA; (N.P.); (R.C.); (S.A.); (R.L.G.)
| | - Renee Chosed
- School of Medicine Greenville, University of South Carolina, Greenville, SC 29605, USA; (N.P.); (R.C.); (S.A.); (R.L.G.)
| | - Sergio Arce
- School of Medicine Greenville, University of South Carolina, Greenville, SC 29605, USA; (N.P.); (R.C.); (S.A.); (R.L.G.)
| | | | - Richard L. Goodwin
- School of Medicine Greenville, University of South Carolina, Greenville, SC 29605, USA; (N.P.); (R.C.); (S.A.); (R.L.G.)
| | - Thomas I. Nathaniel
- School of Medicine Greenville, University of South Carolina, Greenville, SC 29605, USA; (N.P.); (R.C.); (S.A.); (R.L.G.)
- Correspondence: ; Tel.: +1-8644559846; Fax: +1-8644558404
| |
Collapse
|
8
|
Awujoola A, Sodeke P, Olufeyisayo O, Mokikan M, Adeyemi E, Babalola G, Awujoola O, Okon M, Nathaniel TI. Clinical Risk Factors Associated with Ambulatory Outcome in Acute Ischemic Stroke Patients Smokers Treated with Thrombolytic Therapy. Am J Med Sci 2021; 362:363-374. [PMID: 34077707 DOI: 10.1016/j.amjms.2021.01.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 01/20/2021] [Accepted: 01/26/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Patients who have suffered an acute ischemic stroke (AIS) and are smokers may have a better outcome following thrombolytic therapy when compared with non-smokers. While this finding is controversial, data on baseline clinical risk factors to predict treatment efficacy of thrombolytic therapy using ambulatory status in patients who suffered AIS and are smokers is not common. METHODS Between 2010 and 2016, retrospective data on patients who have suffered an AIS and received recombinant tissue plasminogen activator (rtPA) were obtained from Greenville health system registry. Assessment of clinical risk factors and the likelihood of an improvement in post-stroke ambulation among smokers and non-smokers was carried out using multivariate logistic regression. RESULTS Of 1001 patients, 70.8% were smokers and 29.2% non-smokers. Among the smokers and non-smokers, 74.6% and 84.6% improvement in ambulation respectively at discharge. The odds of improved ambulation decrease among smokers as age group increases compared to those below 50 [(60-69 years, aOR, 0.30, 95% C.I, 0.108-0.850, p < 0.05), (70-79 years aOR, 0.27, 95% C.I, 0.096-0.734, p < 0.05), (80+ years aOR, 0.16, 95% C.I, 0.057-0.430, P < 0.01). Patients with National Institute of Health Stroke Scale Score (NIHSS) score > 7 (reference <7) were 91% less likely to have improved ambulation among smokers and non-smokers (aOR, 0.09, 95% C.I, 0.055-0.155, P = 0.01), and (aOR, 0.08, 95% C.I, 0.027-0.214, P = 0.01) respectively. Atrial fibrillation was an independent predictor of decreased improvement in ambulation only among smokers (aOR, 0.58, 95% C.I, 0.356-0.928 P < 0.05). CONCLUSION Our findings suggest that elderly smokers with atrial fibrillation would benefit more from aggressive management of atrial fibrillation than non-smokers.
Collapse
Affiliation(s)
- Adeola Awujoola
- East Tennessee State University, Department of Biostatistics and Epidemiology, Johnson City, TN
| | - Patrick Sodeke
- East Tennessee State University, Department of Biostatistics and Epidemiology, Johnson City, TN
| | - Odebunmi Olufeyisayo
- East Tennessee State University, Department of Health Service Management and Policy, Johnson City, TN
| | - Moboni Mokikan
- East Tennessee State University, Department of Biostatistics and Epidemiology, Johnson City, TN
| | - Emmanuel Adeyemi
- East Tennessee State University, Department of Biostatistics and Epidemiology, Johnson City, TN
| | - Grace Babalola
- State University of New York, Department of Systems Science and Industrial Engineering, Binghamton, NY
| | | | - Marvin Okon
- Clemson University, Department of Public Health Sciences, Clemson, SC
| | - Thomas I Nathaniel
- University of South Carolina School of Medicine Greenville, Greenville, SC.
| |
Collapse
|
9
|
Sanders CB, Knisely K, Edrissi C, Rathfoot C, Poupore N, Wormack L, Nathaniel T. Obstructive sleep apnea and stroke severity: Impact of clinical risk factors. Brain Circ 2021; 7:92-103. [PMID: 34189352 PMCID: PMC8191529 DOI: 10.4103/bc.bc_57_20] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 04/09/2021] [Accepted: 04/10/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Specific clinical and demographic risk factors may be associated with improving or worsening neurologic outcomes within a population of acute ischemic stroke (AIS) patients with a history of obstructive sleep apnea (OSA). The objective of this study was to determine the changes in neurologic outcome during a 14-day recovery as it relates to initial stroke severity in AIS patients with OSA. METHODS This retrospective study analyzed baseline clinical risk factors and demographic data collected in a regional stroke center from January 2010 to June 2016. Our primary endpoint measure was the National Institutes of Health Stroke Scale (NIHSS) score and our secondary endpoint measures included the clinical factors associated with improving (NIHSS score ≤7) or worsening (NIHSS score >7) neurological outcome. The relative contribution of each variable to stroke severity and related outcome was determined using a logistic regression. The regression models were checked for the overall correct classification percentage using a Hosmer-Lemeshow test, and the sensitivity of our models was determined by the area under the receiver operating characteristic curve. RESULTS A total of 5469 AIS patients were identified. Of this, 96.89% did not present with OSA while 3.11% of AIS patients presented with OSA. Adjusted multivariate analysis demonstrated that in the AIS population with OSA, atrial fibrillation (AF) (odds ratio [OR] = 3.36, 95% confidence interval [CI], 1.289-8.762, P = 0.013) and changes in ambulatory status (OR = 2.813, 95% CI, 1.123-7.041, P = 0.027) showed an association with NIHSS score >7 while being Caucasian (OR = 0.214, 95% CI, 0.06-0.767, P = 0.018) was associated with NIHSS score ≤7. CONCLUSION In AIS patients with OSA, AF and changes in ambulatory status were associated with worsening neurological outcome while Caucasian patients were associated with improving neurological outcome. Our findings may have significant implications for patient stratification when determining treatment protocols with respect to neurologic outcomes in AIS patients with OSA.
Collapse
Affiliation(s)
- Carolyn Breauna Sanders
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC, USA
| | - Krista Knisely
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC, USA
| | - Camron Edrissi
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC, USA
| | - Chase Rathfoot
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC, USA
| | - Nicolas Poupore
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC, USA
| | - Leah Wormack
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC, USA
| | - Thomas Nathaniel
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC, USA
| |
Collapse
|
10
|
Rathfoot C, Edrissi C, Sanders CB, Knisely K, Poupore N, Nathaniel T. Gender differences in comorbidities and risk factors in ischemic stroke patients with a history of atrial fibrillation. BMC Neurol 2021; 21:209. [PMID: 34034655 PMCID: PMC8146651 DOI: 10.1186/s12883-021-02214-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/19/2021] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Atrial Fibrillation (AF) is a common cardiac arrhythmia and has been identified as a major risk factor for acute ischemic stroke (AIS). Gender differences in the disease process, causative mechanisms and outcomes of AF have been investigated. In the current study, we determined whether there is a gender-based disparity in AIS patients with baseline AF, and whether such a discrepancy is associated with specific risk factors and comorbidities. METHODS Baseline factors including comorbidities, risk and demographic factors associated with a gender difference were examined using retrospective data collected from a registry from January 2010 to June 2016 in a regional stroke center. Univariate analysis was used to differentiate between genders in terms of clinical risk factors and demographics. Variables in the univariate analysis were further analyzed using logistic regression. The adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for each factor were used to predict the increasing odds of an association of a specific comorbidity and risk factor with the male or female AIS with AF. RESULTS In the population of AIS patients with AF, a history of drug and alcohol use (OR = 0.250, 95% CI, 0.497-1.006, P = 0.016), sleep apnea (OR = 0.321, 95% CI, 0.133-0.777, P = 0.012), and higher serum creatinine (OR = 0.693, 95% CI, 0.542-0.886 P = 0.003) levels were found to be significantly associated with the male gender. Higher levels of HDL-cholesterol (OR = 1.035, 95% CI, 1.020-1.050, P < 0.001), LDL-cholesterol (OR = 1.006, 95% CI, 1.001-1.011, P = 0.012), and the inability to ambulate on admission to hospital (OR = 2.258, 95% CI, 1.368-3.727, P = 0.001) were associated with females. CONCLUSION Our findings reveal that in the AIS patients with atrial fibrillation, migraines, HDL, LDL and poor ambulation were associated with females, while drugs and alcohol, sleep apnea, and serum creatinine level were associated with male AIS patients with AF. Further studies are necessary to determine whether gender differences in risk factor profiles and commodities require consideration in clinical practice when it comes to AF as a risk factor management in AIS patients.
Collapse
Affiliation(s)
- Chase Rathfoot
- School of Medicine Greenville, University of South Carolina, Greenville, SC, 29605, USA
| | - Camron Edrissi
- School of Medicine Greenville, University of South Carolina, Greenville, SC, 29605, USA
| | | | - Krista Knisely
- School of Medicine Greenville, University of South Carolina, Greenville, SC, 29605, USA
| | - Nicolas Poupore
- School of Medicine Greenville, University of South Carolina, Greenville, SC, 29605, USA
| | - Thomas Nathaniel
- School of Medicine Greenville, University of South Carolina, Greenville, SC, 29605, USA.
| |
Collapse
|
11
|
Brechtel L, Poupore N, Stoikov T, Roley LT, Emerson JF, Nathaniel T. Comorbidities associated with different levels of total cholesterol in male and female acute ischemic stroke patients. Medicine (Baltimore) 2020; 99:e23870. [PMID: 33350783 PMCID: PMC7769330 DOI: 10.1097/md.0000000000023870] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 11/23/2020] [Indexed: 01/24/2023] Open
Abstract
Men and women differ in their clinical risk factors with respect to various predictors of severity in acute ischemic stroke (AIS). High cholesterol is a risk factor for AIS and the mechanism by which high cholesterol levels lead to an AIS is well established. However, the specific relationship between demographic, clinical risk factors, total cholesterol, and the resulting gender difference in AIS patients is yet to be investigated. This study recruited AIS patients between January 2000 and June 2016 classified into normal, borderline or high total cholesterol (TC). Normal was defined as ≤200 mg/dl, borderline 200 to 239 mg/dl and high ≥240 mg/dl based on Adult Treatment Panel III (ATP III) Guidelines for the classification of TC levels. The logistic regression model was used to predict clinical risk factors associated within men and women AIS patients with different levels of TC. A total of 3532 AIS patients presented with normal TC, 760 patients with borderline TC and 427 patients with high TC. The high total cholesterol group was more likely to be women with increasing age (OR = 1.028, 95% CI, 1.006-1.052, P = .014), body mass index (BMI) (OR = 1.052, 95% CI, 1.004-1.102, P = .033), and high-density lipoprotein cholesterol (HDL-C) (OR = 1.039, 95% CI, 1.019-1.060, P < .001), while those with coronary artery disease (OR = 0.435, 95% CI, 0.234-0.809, P = .003), history of drug or alcohol abuse (OR = 0.261, 95% CI, 0.079-0.867, P = .028), increasing INR (OR = 0.187, 95% CI, 0.047-0.748, P = .018), and elevated diastolic blood pressure (OR = 0.982, 95% CI, 0.970-0.995, P = .006) were associated with being a male AIS patient. There were disparities in demographic and clinical risk factors associated with high TC levels in men when compared to women and more clinical risk factors were associated with high TC levels in men when compared to women with AIS. It is important to take into account specific clinical risk factors associated with gender-related differences in total cholesterol in AIS population to facilitate personalizing their therapeutic actions.
Collapse
Affiliation(s)
- Leanne Brechtel
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville
| | - Nicolas Poupore
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville
| | - Teodora Stoikov
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville
| | | | | | - Thomas Nathaniel
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville
| |
Collapse
|
12
|
Poupore N, Strat D, Mackey T, Snell A, Nathaniel T. Ischemic stroke with a preceding Trans ischemic attack (TIA) less than 24 hours and thrombolytic therapy. BMC Neurol 2020; 20:197. [PMID: 32429850 PMCID: PMC7236928 DOI: 10.1186/s12883-020-01782-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 05/13/2020] [Indexed: 12/02/2022] Open
Abstract
Background Acute ischemic stroke attack with and without a recent TIA may differ in clinical risk factors, and this may affect treatment outcomes following thrombolytic therapy. We examined whether the odds of exclusion or inclusion for thrombolytic therapy are greater in ischemic stroke with TIA less than 24 h preceding ischemic stroke (recent-TIA) as compared to those without recent TIA or non-TIA > 24 h and less than 1 month (past-TIA). Methods A retrospective hospital-based analysis was conducted on 6315 ischemic stroke patients, of whom 846 had proven brain diffusion-weighted magnetic resonance imaging (DW-MRI) of an antecedent TIA within 24 h prior to ischemic stroke. The logistic regression model was developed to generate odds ratios (OR) to determine clinical factors that may increase the likelihood of exclusion or inclusion for thrombolytic therapy. The validity of the model was tested using a Hosmer-Lemeshow test, while the Receiver Operating Curve (ROC) was used to test the sensitivity of our model. Results In the recent-TIA ischemic stroke population, patients with a history of alcohol abuse (OR = 5.525, 95% CI, 1.003–30.434, p = 0.05), migraine (OR = 4.277, 95% CI, 1.095–16.703, p = 0.037), and increasing NIHSS score (OR = 1.156, 95% CI, 1.058–1.263, p = 0.001) were associated with the increasing odds of receiving rtPA, while older patients (OR = 0.965, 95% CI, 0.934–0.997, P = 0.033) were associated with the increasing odds of not receiving rtPA. Conclusion In recent-TIA ischemic stroke patients, older patients with higher INR values are associated with increasing odds of exclusion from thrombolytic therapy. Our findings demonstrate clinical risks factors that can be targeted to improve the use and eligibility for rtPA in in recent-TIA ischemic stroke patients.
Collapse
|
13
|
Improvements and deficits progression among ischemic stroke patients with pre-stroke depression and thrombolytic therapy. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.npbr.2020.05.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
14
|
Moraney R, Poupore N, Shugart R, Tate M, Snell A, Brown K, Nathaniel TI. Thrombolytic therapy in ischemic stroke patients with pre-stroke depression in the telestroke vs non-telestroke. J Stroke Cerebrovasc Dis 2020; 29:104890. [DOI: 10.1016/j.jstrokecerebrovasdis.2020.104890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/01/2020] [Accepted: 04/12/2020] [Indexed: 12/22/2022] Open
|
15
|
Rotimi OR, Ajani IF, Penwell A, Lari S, Walker B, Nathaniel TI. In acute ischemic stroke patients with smoking incidence, are more women than men more likely to be included or excluded from thrombolysis therapy? ACTA ACUST UNITED AC 2020; 16:1745506520922760. [PMID: 32459136 PMCID: PMC7257387 DOI: 10.1177/1745506520922760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background: Clinical factors associated with exclusion from recombinant tissue
plasminogen activator in both men and women are not completely understood.
The aim of this study is to determine whether there is a gender difference
in clinical risk factors that excluded ischemic stroke patients with a
history of smoking from recombinant tissue plasminogen activator. Methods: Retrospective data from a stroke registry were analyzed, and multivariable
linear regression models were used to determine gender differences. Logistic
regression models determined exclusion clinical risk factors for
thrombolysis in male and female acute ischemic stroke patients with a
history of smoking, while sequentially adjusting for sociodemographic,
clinical, and stroke-related variables. The Kaplan–Meier survival analysis
was used to determine the exclusion probabilities of men and women with a
history of smoking within the stroke population. Results: Of the 1,446 acute ischemic stroke patients eligible for recombinant tissue
plasminogen activator, 379 patients with a history of smoking were examined,
of which 181 received recombinant tissue plasminogen activator while 198
were excluded from receiving recombinant tissue plasminogen activator. Of
the 198 patients, 75 females and 123 males were excluded from receiving
recombinant tissue plasminogen activator. After multivariable adjustment for
age, National Institutes of Health scores, and stroke-related factors,
females who present with weakness/paresis on initial examination
(OR = 0.117, 95% CI, 0.025–0.548) and men who present with a history of
previous transient ischemic attack (OR = 0.169, 95% CI, 0.044–0.655),
antiplatelet medication use (OR = 0.456, 95% CI, 0.230–0.906), and
weakness/paresis on initial examination (OR = 0.171, 95% CI, 0.056–0.521)
were less likely to be excluded from recombinant tissue plasminogen
activator (thrombolysis therapy). Conclusions: In an ischemic stroke population with a history of smoking, female smokers
are more likely to be excluded from thrombolysis therapy in comparison to
men, even after adjustment for confounding variables.
Collapse
Affiliation(s)
- Oluyemi R Rotimi
- College of Public health, East Tennessee State University, Johnson City, TN, USA
| | - Iretioluwa F Ajani
- College of Public health, East Tennessee State University, Johnson City, TN, USA
| | | | - Shyyon Lari
- School of Medicine Greenville, University of South Carolina, SC, USA
| | - Brittany Walker
- School of Medicine Greenville, University of South Carolina, SC, USA
| | | |
Collapse
|
16
|
Poupore N, Strat D, Mackey T, Brown K, Snell A, Nathaniel TI. Thrombolytic therapy in ischemic stroke patients with a preceding transient ischemic attack in telestroke and non‐telestroke settings. ACTA ACUST UNITED AC 2020. [DOI: 10.1111/ncn3.12426] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Nicolas Poupore
- University of South Carolina School of Medicine Greenville Greenville SC USA
| | - Dan Strat
- University of South Carolina School of Medicine Greenville Greenville SC USA
| | - Tristan Mackey
- University of South Carolina School of Medicine Greenville Greenville SC USA
| | - Katherine Brown
- University of South Carolina School of Medicine Greenville Greenville SC USA
| | - Ashley Snell
- University of South Carolina School of Medicine Greenville Greenville SC USA
| | - Thomas I. Nathaniel
- University of South Carolina School of Medicine Greenville Greenville SC USA
| |
Collapse
|
17
|
Poupore N, Strat D, Mackey T, Brown K, Snell A, Nathaniel TI. Cholesterol reducer and thrombolytic therapy in acute ischemic stroke patients. Lipids Health Dis 2020; 19:84. [PMID: 32375780 PMCID: PMC7201805 DOI: 10.1186/s12944-020-01270-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/27/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Specific clinical risk factors may contribute to improving or worsening neurological functions in acute ischemic stroke (AIS) patients pre-treated with a combined cholesterol reducer and recombinant tissue plasminogen activator (rtPA) therapy. In this study, clinical risk factors associated with good or poor presenting neurological symptoms in ischemic stroke patients with prior cholesterol reducer use, specifically a statin and rtPA therapy was investigated. METHODS Retrospective data for baseline clinical and demographic data for patients with AIS taking cholesterol reducers prior to rtPA treatment from January 2010 to June 2016 in a regional stroke center was analyzed. Improving (NIHSS score ≤ 7) or worsening (NIHSS score > 7) of neurologic functions were the determined measures of treatment outcome. Multivariate logistic regression models identified demographic and clinical factors associated with worsening or improving neurologic functions. RESULTS Adjusted multivariate analysis showed that in an AIS population with a combined rtPA and cholesterol reducer medication history, increasing age (OR = 1.032, 95% CI, 1.015-1.048, P < 0.001) and atrial fibrillation (OR = 1.859, 95% CI, 1.098-3.149, P = 0.021) demonstrated a likely association with worsening neurologic functions, while direct admission (OR = 0.411, 95% CI, 0.246-0.686, P = 0.001) and being Caucasian (OR = 0.496, 95% CI, 0.297-0.827, P = 0.007) showed an association with improving or progressing neurologic functions. CONCLUSION A prior cholesterol reducer, namely a statin, plus rtPA combination may be associated with worsening neurological function for elderly AIS patients with atrial fibrillation, while Caucasians directly admitted to a neurology unit are more likely to show an association with progress or improvements in neurologic functions. While combining statin with rtPA treatment may facilitate worsening neurologic functions in elderly AIS patients with atrial fibrillation, they should not be denied of this therapy. The decision to combine statin and rtPA for AIS patients with atrial fibrillation can be done after clinical stabilization following appropriate clinical management.
Collapse
Affiliation(s)
- Nicolas Poupore
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC, 29605, USA
| | - Dan Strat
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC, 29605, USA
| | - Tristan Mackey
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC, 29605, USA
| | - Katherine Brown
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC, 29605, USA
| | - Ashley Snell
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC, 29605, USA
| | - Thomas I Nathaniel
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC, 29605, USA.
| |
Collapse
|
18
|
Scalise M, Brechtel L, Conn Z, Bailes B, Gainey J, Nathaniel TI. Predicting ambulatory recovery in acute ischemic stroke patients with thrombolytic therapy. FUTURE NEUROLOGY 2020. [DOI: 10.2217/fnl-2020-0002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Aim: The aim of this study was to determine the predictive value of clinical presentations on functional ambulation following thrombolytic therapy. Materials & methods: Logistic regression analysis was used to determine associations between functional ambulation and thrombolytic therapy. Results & conclusion: In the results, Hispanic ethnicity (odds ratio (OR): 2.808; p = 0.034; 95% CI: 1.08–7.30), high National Institute of Health Stroke Scale (NIHSS) (OR: 1.112; p ≤ 0.001; 95% CI: 1.06–1.17), weakness/paresis (OR: 1.796; p = 0.005; 95% CI: 1.19–2.71), Broca’s aphasia (OR: 1.571; p = 0.003; 95% CI = 1.16–2.12) and antihypertensive medication (OR: 1.530; p = 0.034; 95% CI: 1.03–2.26) were associated with an improved ambulation in patients without thrombolytic therapy. In thrombolytic treated patients, Broca’s aphasia was associated with improved functional outcome.
Collapse
Affiliation(s)
- Matthew Scalise
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC 29605 USA
| | - Leanne Brechtel
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC 29605 USA
| | - Zachary Conn
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC 29605 USA
| | - Benjamin Bailes
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC 29605 USA
| | - Jordan Gainey
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC 29605 USA
| | - Thomas I Nathaniel
- University of South Carolina School of Medicine Greenville, 607 Grove Rd, Greenville, SC 29605 USA
| |
Collapse
|
19
|
Poupore N, Strat D, Mackey T, Nathaniel TI. The Association Between an Antecedent of Transient Ischemic Attack Prior to Onset of Stroke and Functional Ambulatory Outcome. Clin Appl Thromb Hemost 2020; 26:1076029620906867. [PMID: 32122158 PMCID: PMC7288839 DOI: 10.1177/1076029620906867] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/06/2019] [Accepted: 01/18/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Specific clinical risk factors linked to transient ischemic attack (TIA) could affect functional ambulatory outcome following thrombolytic therapy in patients having ischemic stroke with a prior TIA (TIA-ischemic stroke). This issue was investigated in this study. METHODS We retrospectively analyzed data from 6379 ischemic stroke patients of which 1387 presented with an antecedent TIA prior to onset of stroke. We used logistic regression model to identify demographic and clinical risk factors that are associated with functional ambulatory outcome in patients with TIA-ischemic stroke treated with thrombolytic therapy. RESULTS In a population of TIA-ischemic stroke who received recombinant tissue plasminogen activator, patients with a history of stroke (odds ratio [OR] = 3.229, 95% confidence interval [CI] = 1.494-6.98, P = .003) were associated with increasing odds of improvement in functional ambulation, while the female gender (OR = 0.462, 95% CI = 0.223-0.956, P = .037) was associated with reducing odds of improvement. In the non-TIA group, dyslipidemia (OR = 1.351, 95% CI = 1.026-1.781, P = .032) and blood glucose (OR = 1.003, 95% CI = 1.0-1.005, P = .041) were associated with the increasing odds of improvement while older patients (OR = 0.989, 95% CI = 0.98-0.999, P = .029) with heart failure (OR = 0.513, 95% CI = 0.326-0.808, P = .004) and higher lipid level (OR = 0.834, 95% CI = 0.728-0.955, P = .009) were associated with reducing odds of improvement in ambulation. CONCLUSION In a population of TIA-ischemic stroke with thrombolytic therapy and a clearly defined TIA without focal ischemic injury, regardless of associated clinical risk factors, a TIA prior to a stroke is not associated with reducing odds of improved ambulatory outcome, except in female patients with TIA-ischemic stroke.
Collapse
Affiliation(s)
- Nicolas Poupore
- University of South Carolina School of Medicine, Greenville, SC, USA
| | - Dan Strat
- University of South Carolina School of Medicine, Greenville, SC, USA
| | - Tristan Mackey
- University of South Carolina School of Medicine, Greenville, SC, USA
| | | |
Collapse
|
20
|
Abstract
OBJECTIVES Evidence about sex differences in blood pressure (BP) at the time of acute stroke presentation is scarce. We aimed to summarize available data on sex differences in BP at the time of acute stroke presentation, including stratification by prior history of hypertension and stroke subtype. METHODS We performed a systematic literature search across MEDLINE and Embase, from inception to 21 December 2018, to identify all population-based observational studies that reported BP at the time of acute stroke presentation. We extracted data on patient demographics, stroke-type (ischaemic or haemorrhagic), stroke severity, vascular risk factors, and SBP and DBP at the time of stroke presentation. Wherever possible, data were pooled for meta-analysis with weighted mean difference (WMD) and corresponding 95% confidence intervals (CI) using random effects meta-analysis. RESULTS We included 128 138 stroke patients from 43 studies. Women had higher SBP at presentation than men (WMD, 1.46; 95% CI, 0.65-2.26); this difference was significant in ischaemic stroke (1.49; 0.25-2.72 mmHg), but not in intracerebral haemorrhage (0.19; -4.21 to 4.59 mmHg). Meta regression show that sex differences in SBP were consistent with increasing age, stroke severity, other comorbidities and medication history. CONCLUSION This systematic review and meta-analysis indicates that women have higher SBP at the time of presentation with acute stroke. These differences are consistent with sex differences in hypertension patterns in older age, and may be explained by the fact that women are more likely to have a premorbid hypertension. This highlights the need for effective sex-specific blood pressure control in patients at high risk for stroke.
Collapse
|
21
|
Blum B, Penwell A, Wormack L, Walker B, Lari S, Nathaniel TI. Gender and thrombolysis therapy in acute ischemic stroke patients with incidence of obesity. Neurol Sci 2019; 40:1829-1839. [DOI: 10.1007/s10072-019-03902-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 04/12/2019] [Indexed: 12/22/2022]
|
22
|
Fleming T, Blum B, Averkamp B, Sullivan J, Nathaniel T. Effect of antihypertensive medications on thrombolysis therapy and outcomes in acute ischemic stroke patients. J Clin Hypertens (Greenwich) 2019; 21:271-279. [DOI: 10.1111/jch.13472] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/06/2018] [Accepted: 11/17/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Tyler Fleming
- University of South Carolina School of Medicine Greenville; Greenville South Carolina
| | - Brice Blum
- University of South Carolina School of Medicine Greenville; Greenville South Carolina
| | - Benjamin Averkamp
- University of South Carolina School of Medicine Greenville; Greenville South Carolina
| | - James Sullivan
- University of South Carolina School of Medicine Greenville; Greenville South Carolina
| | - Thomas Nathaniel
- University of South Carolina School of Medicine Greenville; Greenville South Carolina
| |
Collapse
|
23
|
Blum B, Wormack L, Holtel M, Penwell A, Lari S, Walker B, Nathaniel TI. Gender and thrombolysis therapy in stroke patients with incidence of dyslipidemia. BMC WOMENS HEALTH 2019; 19:11. [PMID: 30651099 PMCID: PMC6335821 DOI: 10.1186/s12905-018-0698-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 12/05/2018] [Indexed: 01/12/2023]
Abstract
BACKGROUND When untreated, dyslipidemia is a higher risk factor for stroke and stroke-related mortality in men than in women. However, when dyslipidemia is treated the risk reduction is the same, but men benefited from mortality reduction more than women. Whether there is a gender difference in exclusion criteria for the use of recombinant tissue plasminogen activator (rtPA) or thrombolysis therapy in an acute ischemic stroke subpopulation with dyslipidemia is yet to be investigated. METHOD In a dyslipidemic stroke population obtained from a stroke registry, gender differences in exclusion risk factors were determined using clinical and demographic variables. Univariate analysis compared the recombinant tissue plasminogen activator (rtPA) group and the no rtPA group. Multiple regression analysis was used to determine demographic and clinical factors associated with inclusion and exclusion for rtPA in the total dyslipidemic stroke population and the subsets of the male and female population. The regression model was tested using the Hosmer-Lemeshow test, for the overall correct classification percentage. Significant interactions and multicollinearity between independent variables were examined using variance inflation factors. RESULTS A total of 769 patients presented with acute ischemic stroke with incidence dyslipidemia; 325 received rtPA while 444 were excluded from rtPA. Of those excluded from rtPA, 54.30% were female and 45.72% were male. In an adjusted analysis, female patients with increased age (OR = 1.024, 95% CI, 1.001-1.047, P < 0.05), with a history of carotid artery stenosis (OR = 7.063, 95% CI, 1.506-33.134, P < 0.05), and previous stroke (OR = 1.978, 95% CI, 1.136-3.442, P < 0.05) were more likely to be excluded from rtPA. Male patients with atrial fibrillation (OR = 2.053, 95% CI, 1.059-3.978, P = 0.033), carotid artery stenosis (OR = 2.400, 95% CI, 1.062-5.424, P = 0.035), and previous stroke (OR = 1.785, 95% CI, 1.063-2.998, P = 0.028) were more likely to be excluded from rtPA. CONCLUSION Although there are some similarities in the clinical risk factors for exclusion in both male and female stroke patients with incidence of dyslipidemia, there are differences as well. Elderly female stroke patients with incidence of dyslipidemia are more likely to be excluded from rtPA, even after adjustment for the effect of confounding variables. Further research should focus on how identified clinical risk factors can be targeted and managed to improve the use of rtPA in elderly female acute ischemic stroke population with incidence of dyslipidemia.
Collapse
Affiliation(s)
- Brice Blum
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Leah Wormack
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Mason Holtel
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Alexandria Penwell
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Shyyon Lari
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Brittany Walker
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Thomas I Nathaniel
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA.
| |
Collapse
|
24
|
Brecthel L, Gainey J, Penwell A, Nathaniel TI. Predictors of thrombolysis in the telestroke and non telestroke settings for hypertensive acute ischemic stroke patients. BMC Neurol 2018; 18:215. [PMID: 30577762 PMCID: PMC6302528 DOI: 10.1186/s12883-018-1204-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 11/26/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND In acute ischemic stroke patients, telestroke technology provides sustainable approaches to improve the use of thrombolysis therapy. How this is achieved as it relates to inclusion or exclusion of clinical risk factors for thrombolysis is not fully understood. We investigated this in a population of hypertensive stroke patients. METHODS Structured data from a regional stroke registry that contained telestroke and non telestroke patients with a primary diagnosis of acute ischemic stroke with history of hypertension were collected between January 2014 and June 2016. Clinical risk factors associated with inclusion or exclusion for recombinant tissue plasminogen activator (rtPA) in the telestroke and non telestroke were identified using multiple regression analysis. Associations between variables and rtPA in the regression models were determined using variance inflation factors while the fitness of each model was determined using the ROC curve to predict the power of each logistic regression model. RESULTS The non telestroke admitted more patients (62% vs 38%), when compared with the telestroke. Although the telestroke admitted fewer patients, it excluded 11% and administered thrombolysis therapy to 89% of stroke patients with hypertension. In the non telestroke group, adjusted odd ratios showed significant associations of NIH stroke scale score (OR = 1.059, 95% CI, 1.025-1.093, P < 0.001) and coronary artery disease (OR = 2.003, 95% CI, 1.16-3.457, P = 0.013) with inclusion, while increasing age (OR = 0.979, 95% CI, 0.961-0.996, P = 0.017), higher INR (OR = 0.146, 95% CI, 0.032-0.665, P = 0.013), history of previous stroke (OR = 0.39, 95% CI, 0.223-0.68, P = 0.001), and renal insufficiency (OR = 0.153, 95% CI, 0.046-0.508, P = 0.002) were associated with rtPA exclusion. In the telestroke, only direct admission to the telestroke was associated with rtPA administration, (OR = 4.083, 95% CI, 1.322-12.611, P = 0.014). CONCLUSION The direct admission of hypertensive stroke patients to the telestroke network was the only factor associated with inclusion for thrombolysis therapy even after adjustment for baseline variables. The telestroke technology provides less restrictive criteria for clinical risk factors associated with the inclusion of hypertensive stroke patients for thrombolysis.
Collapse
Affiliation(s)
- Leanne Brecthel
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Jordan Gainey
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Alexandria Penwell
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA
| | - Thomas I Nathaniel
- University of South Carolina, School of Medicine-Greenville, Greenville, SC, 29605, USA.
| |
Collapse
|
25
|
Gainey J, Blum B, Bowie B, Cooley K, Madeline L, Ervin EL, Nathaniel TI. Stroke and dyslipidemia: clinical risk factors in the telestroke versus non-telestroke. Lipids Health Dis 2018; 17:226. [PMID: 30261884 PMCID: PMC6161368 DOI: 10.1186/s12944-018-0870-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/21/2018] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Clinical risk factors related to not administering thrombolysis to acute ischemic stroke patients with incidence dyslipidemia is not clear. This issue was investigated in telestroke and non-telestroke settings. METHODS We analyzed retrospective data collected from a stroke registry to compare exclusion risk factors in the telestroke and non-telestroke. We performed multivariate analysis was performed to identify risk factors that may result in exclusion from rtPA. Variance inflation factors were used to examine multicollinearity and significant interactions between independent variables in the model, while Hosmer-Lemeshow test, Cox & Snell were used to determine the fitness of the regression models. RESULTS A greater number of patients with acute ischemic stroke with incidence dyslipidemia were treated in the non-telestroke (285) when compared with the telestroke network (187). Although non-telestroke admitted more patients than the telestroke, the telestroke treated more patients with rtPA (89.30%) and excluded less (10.70%), while the non-telestroke excluded from rtPA (61.40%). In the non-telestroke, age (adjusted OR, 0.965; 95% CI, 0.942-0.99), blood glucose level (adjusted OR, 0.995; 95% CI, 0.99-0.999), international normalized ratio (adjusted OR, 0.154; 95% CI, 0.031-0.78),congestive heart failure(CHF) (adjusted OR, 0.318; 95% CI, 0.109-0.928), previous stroke (adjusted OR, 0.405; 95% CI, 0.2-0.821) and renal insufficiency (adjusted OR, 0.179; 95% CI, 0.035-0.908) were all directly linked to exclusion from rtPA. In the telestroke, only body mass index (adjusted OR, 0.911; 95% CI, 0.832-0.997) significantly excluded acute ischemic stroke patients with incidence dyslipidemia from thrombolysis therapy. CONCLUSION Despite having more patients with acute ischemic stroke that present incidence dyslipidemia, the non-telestroke patients had more clinical risk factors that excluded more patients from rtPA when compared with telestroke. Future studies should focus on how identified clinical risk factors can be managed to improve the use of rtPA in the non-telestroke setting. Moreover, the optimization of the risk-benefit ratio of rtPA by the telestroke technology can be advanced to the non-telestroke setting to improve the use of thrombolysis therapy.
Collapse
Affiliation(s)
- Jordan Gainey
- School of Medicine-Greenville, University of South Carolina, 607 Grove Road, Greenville, SC, 29605, USA
| | - Brice Blum
- School of Medicine-Greenville, University of South Carolina, 607 Grove Road, Greenville, SC, 29605, USA
| | - Bekah Bowie
- School of Medicine-Greenville, University of South Carolina, 607 Grove Road, Greenville, SC, 29605, USA
| | - Keiko Cooley
- School of Medicine-Greenville, University of South Carolina, 607 Grove Road, Greenville, SC, 29605, USA
| | - Lee Madeline
- Greenville Health System, 701 Grove Road, Greenville, 29605, SC, USA
| | | | - Thomas I Nathaniel
- School of Medicine-Greenville, University of South Carolina, 607 Grove Road, Greenville, SC, 29605, USA.
| |
Collapse
|