Abstract TP371: Stroke Center Heparin Flush Use in Transfemoral Angiography Survey

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Margaret Korzewski ◽  
Lori Madden ◽  
Kendra Schomer
Keyword(s):  
Solution Concentration ◽  
Endovascular Intervention ◽  
Endovascular Interventions ◽  
Heparinized Saline ◽  
Intravenous Tissue Plasminogen Activator ◽  
Symptomatic Intracerebral Hemorrhage ◽  
Aneurysm Embolization ◽  
American Society ◽  
Stroke Center ◽  
Revascularization Procedures

Background and Purpose: The drug concentration of heparinized saline used for transfemoral catheter angiography flush during different types of cerebral endovascular interventions varies among operators and centers worldwide. While heparin use is recommended during cerebral angiograms to minimize the risk of thromboembolic events, there is a paucity of information regarding protocols for administration of heparinized saline. Higher concentrations of heparinized saline may benefit patients undergoing elective intracranial aneurysm embolization by decreasing the risk of thromboembolism. However, it may place patients undergoing revascularization procedures for acute ischemic stroke at higher risk of symptomatic intracerebral hemorrhage, particularly if they received intravenous tissue plasminogen activator immediately prior. Methods: After obtaining permission from the Association for Radiologic and Imaging Nursing (ARIN) Board of Directors, a survey was electronically distributed by ARIN to its members via the ARIN List Serve. Response to the survey was identified as consent to participate. Subjects were asked to participate if they were currently involved in the management of patients undergoing cerebral angiography with a variety of interventions. Results: The most frequently used concentration of heparinized saline flush was 2 units/ml (32.8%-34.8% range, depending on endovascular intervention), and the least frequently utilized concentrations were 3 units/ml and higher than 5 units/ml (4.3%- 5.7% range, depending on endovascular intervention). Mixing and labeling bags with heparinized saline flush was noted to be the responsibility of interventional radiology registered nurse (39%, n= 46), pharmacy (26.3%, n= 31), or the angiography technologist (8.5%, n= 10). Conclusions: There are no standard protocols across stroke centers identifying optimal heparinized saline flush solution concentration, preparation and documentation. Replication of this survey among members of the American Society of Neuroradiology is recommended to validate the findings from the current study. If confirmed, a consensus on safety of heparinized saline flush use during neuroradiology interventions is advised.

scholarly journals GRP per capita and hospital characteristics associated with intravenous tissue plasminogen activator adherence rate: evidence from the Chinese Stroke Center Alliance

2021 ◽  
pp. svn-2020-000633
Author(s):  
Suxi Zheng ◽  
Tian Jie Lyu ◽  
Zixiao Li ◽  
Hongqiu Gu ◽  
Xin Yang ◽  
...  
Keyword(s):  
Ischaemic Stroke ◽  
Plasminogen Activator ◽  
Acute Ischaemic Stroke ◽  
Emergency Services ◽  
Influential Factors ◽  
Adherence Rate ◽  
Intravenous Tissue Plasminogen Activator ◽  
Tissue Plasminogen ◽  
Per Capita ◽  
Stroke Center

BackgroundTimely delivery of intravenous tissue plasminogen activator (IV-rt PA) is pivotal to eligible patients who had a stroke while achieving higher rates of IV-rt PA has been problematic. This paper focuses on investigating influential factors associated with the administration of IV-rt PA, primarily per capita gross regional product (GRP) and healthcare system factors.MethodsThe study included 980 hospitals in the Chinese Stroke Center Alliance where 158 003 patients who had an acute ischaemic stroke received IV-rt PA between August 2015 and August 2019. The adherence rate to IV-rt PA within 4.5 hours time window in each hospital was the primary outcome. Influential factors were grouped into two categories: macroeconomic status and hospital characteristics. The outcome was analysed using multivariable linear regression.ResultsGRP per capita (β=2.37, p<0.001), hospital stroke centre certification (β=3.77, p<0.001), number of neurologists (β=0.12, p<0.001), existence of emergency services for neurological treatment (β=7.43, p=0.014), presence of emergency department (β=10.03, p=0.019) and cooperating with emergency centre (β=4.65, p=0.029) were significantly positively associated with the adherence rate to IV-rt PA.ConclusionsHigher GRP per capita, affluent neurological personnel, well-equipped emergency services for neurological treatment and routine cooperation with the emergency centre were important for enhancing the adherence rate to IV-rt PA among patients who had an acute ischaemic stroke in China.

scholarly journals Non-target digital ischemia in an ulnar artery distribution following transradial access: Case report and review of best practice techniques

2021 ◽  
pp. 112972982110008
Author(s):  
Patrick Kennedy ◽  
Darren Klass ◽  
John Chung
Keyword(s):  
Best Practice ◽  
Artery Aneurysm ◽  
Ulnar Artery ◽  
Complication Rates ◽  
Endovascular Interventions ◽  
Transradial Access ◽  
Digital Ischemia ◽  
Aneurysm Embolization ◽  
Lower Complication ◽  
Access Complications

Transradial access is a safe approach for visceral endovascular interventions, with lower complication rates compared to transfemoral access. This report describes an unusual case of ulnar artery thrombosis following splenic artery aneurysm embolization via left transradial approach, resulting in non-target digital ischemia and eventual amputation of the ring and little finger distal phalanges. Technical considerations to reduce the incidence of access complications are also reviewed, along with practice modifications undertaken at our institution following this case to improve outcomes.

Abstract P188: Transfer Time From Spoke ER Arrival to CSC Arrival in a Hub-Spoke Transfer Model of Thrombolysis for Acute Ischemic Stroke

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Vivien H Lee ◽  
Paul A Segerstrom ◽  
Ciarán J Powers ◽  
Sharon Heaton ◽  
Shahid M Nimjee ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Univariate Analysis ◽  
Transfer Model ◽  
Transfer Time ◽  
Intravenous Tissue Plasminogen Activator ◽  
The Mean ◽  
Comprehensive Stroke Center ◽  
Stroke Center ◽  
Er Status

Introduction: Acute ischemic stroke (AIS) patients who present to a spoke Emergency Room (ER) and require transfer to a comprehensive stroke center (CSC) hub face potential delays Methods: We performed a retrospective review of 269 suspected AIS patients who received intravenous tissue plasminogen activator (tPA) from July 2016 to October 2017 in our academic telestroke network. During this period, nearly all tPA patients were transferred to the CSC hub. Data was collected on patient demographics, National Institutes of Health Stroke Scale (NIHSS), door to needle time (DTN), and distance to CSC. ER-to-CSC was defined as the time from patient arrival at Spoke ER to arrival at CSC. Top volume ER status was assigned to the 4 Spoke ERs with the highest volume of tPA. Results: Among 269 AIS patients who received tPA at spoke ERs, the mean age was 65.4 years (range, 21 to 95), 49% were female, and 91.8% were white. The initial median NIHSS was 6 (range, 0 to 30) and the mean DTN was 73.1 minutes (range, 14 to 234). The mean distance from Spoke ER to CSC was 55.2 miles (range 5.8 to 125) and the mean ER-to-CSC was 2.6 hours (range 0.62 to 6.3) (Figure 1). In univariate analysis, the following factors were significantly associated with ER-to-CSC: distance (p < 0.0001), DTN (p < 0.0001), NIHSS (p 0.0007), and top volume ER status (p 0.0034). Patient sex, age, race, SBP, weight, initial NIHSS, daytime shift, and weekend status were not significantly associated with ER-to-CSC. Significant variables from the univariate analysis were included in multivariate linear regression model in which DTN (P < 0.0001), distance (P < 0.0001), and NIHSS (P 0.024) association with ER-to-CSC remained significant. Conclusions: In our series of AIS tPA patients transferred to CSC, the mean time from spoke ER arrival to CSC arrival was 2.6 hours. Factors associated with CSC arrival time include markers of ER performance (DTN), severity (NIHSS), and distance. Further study is warranted to improve transfer time in AIS.

scholarly journals Stroke Simulation Improves Acute Stroke Management: A Systems-Based Practice Experience

2018 ◽  
Vol 10 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Tapan Mehta ◽  
Sara Strauss ◽  
Dawn Beland ◽  
Gilbert Fortunato ◽  
Ilene Staff ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Medical Education ◽  
Acute Stroke ◽  
Simulation Training ◽  
Stroke Registry ◽  
Practice Experience ◽  
Intravenous Tissue Plasminogen Activator ◽  
Simulation Based ◽  
Comprehensive Stroke Center ◽  
Stroke Center

ABSTRACT Background  Literature on the effectiveness of simulation-based medical education programs for caring for acute ischemic stroke (AIS) patients is limited. Objective  To improve coordination and door-to-needle (DTN) time for AIS care, we implemented a stroke simulation training program for neurology residents and nursing staff in a comprehensive stroke center. Methods  Acute stroke simulation training was implemented for first-year neurology residents in July 2011. Simulations were standardized using trained live actors, who portrayed stroke vignettes in the presence of a board-certified vascular neurologist. A debriefing of each resident's performance followed the training. The hospital stroke registry was also used for retrospective analysis. The study population was defined as all patients treated with intravenous tissue plasminogen activator for AIS between October 2008 and September 2014. Results  We identified 448 patients meeting inclusion criteria. Simulation training independently predicted reduction in DTN time by 9.64 minutes (95% confidence interval [CI] –15.28 to –4.01, P = .001) after controlling for age, night/day shift, work week versus weekend, and blood pressure at presentation (&gt; 185/110). Systolic blood pressure higher than 185 was associated with a 14.28-minute increase in DTN time (95% CI 3.36–25.19, P = .011). Other covariates were not associated with any significant change in DTN time. Conclusions  Integration of simulation based-medical education for AIS was associated with a 9.64-minute reduction in DTN time.

scholarly journals Artificial neural network based prediction of postthrombolysis intracerebral hemorrhage and death

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Chen-Chih Chung ◽  
Lung Chan ◽  
Oluwaseun Adebayo Bamodu ◽  
Chien-Tai Hong ◽  
Hung-Wen Chiu
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Intracerebral Hemorrhage ◽  
Predictive Model ◽  
Sensitivity And Specificity ◽  
Characteristic Curve ◽  
Intravenous Tissue Plasminogen Activator ◽  
Symptomatic Intracerebral Hemorrhage ◽  
Ann Models ◽  
Artificial Neural

AbstractDespite the salient benefits of the intravenous tissue plasminogen activator (tPA), symptomatic intracerebral hemorrhage (sICH) remains a frequent complication and constitutes a major concern when treating acute ischemic stroke (AIS). This study explored the use of artificial neural network (ANN)-based models to predict sICH and 3-month mortality for patients with AIS receiving tPA. We developed ANN models based on evaluation of the predictive value of pre-treatment parameters associated with sICH and mortality in a cohort of 331 patients between 2009 and 2018. The ANN models were generated using eight clinical inputs and two outputs. The generalizability of the model was validated using fivefold cross-validation. The performance of each model was assessed according to the accuracy, precision, sensitivity, specificity, and area under the receiver operating characteristic curve (AUC). After adequate training, the ANN predictive model AUC for sICH was 0.941, with accuracy, sensitivity, and specificity of 91.0%, 85.7%, and 92.5%, respectively. The predictive model AUC for 3-month mortality was 0.976, with accuracy, sensitivity, and specificity of 95.2%, 94.4%, and 95.5%, respectively. The generated ANN-based models exhibited high predictive performance and reliability for predicting sICH and 3-month mortality after thrombolysis; thus, its clinical application to assist decision-making when administering tPA is envisaged.

scholarly journals Mandatory Neuroendovascular Evolution: Meeting the New Demands

2018 ◽  
Vol 8 (1) ◽  
pp. 69-82
Author(s):  
Mohammad El-Ghanem ◽  
Francisco E. Gomez ◽  
Prateeka Koul ◽  
Rolla Nuoman ◽  
Justin G. Santarelli ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Symptom Onset ◽  
Mechanical Thrombectomy ◽  
Stroke Care ◽  
Endovascular Intervention ◽  
Stroke Patients ◽  
Hub And Spoke ◽  
Comprehensive Stroke Center ◽  
Stroke Center

Background: Traditionally, patients undergoing acute ischemic strokes were candidates for mechanical thrombectomy if they were within the 6-h window from onset of symptoms. This timeframe would exclude many patient populations, such as wake-up strokes. However, the most recent clinical trials, DAWN and DEFUSE3, have expanded the window of endovascular treatment for acute ischemic stroke patients to within 24 h from symptom onset. This expanded window increases the number of potential candidates for endovascular intervention for emergent large vessel occlusions and raises the question of how to efficiently screen and triage this increase of patients. Summary: Abbreviated pre-hospital stroke scales can be used to guide EMS personnel in quickly deciding if a patient is undergoing a stroke. Telestroke networks connect remote hospitals to stroke specialists to improve the transportation time of the patient to a comprehensive stroke center for the appropriate level of care. Mobile stroke units, mobile interventional units, and helistroke reverse the traditional hub-and-spoke model by bringing imaging, tPA, and expertise to the patient. Smartphone applications and social media aid in educating patients and the public regarding acute and long-term stroke care. Key Messages: The DAWN and DEFUSE3 trials have expanded the treatment window for certain acute ischemic stroke patients with mechanical thrombectomy and subsequently have increased the number of potential candidates for endovascular intervention. This expansion brings patient screening and triaging to greater importance, as reducing the time from symptom onset to decision-to-treat and groin puncture can better stroke patient outcomes. Several strategies have been employed to address this issue by reducing the time of symptom onset to decision-to-treat time.

P1329STENTING VERSUS ISOLATED BALLOON ANGIOPLASTY FOR CENTRAL VEIN STENOSIS IN HEMODIALYSIS PATIENTS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Aleksei Zulkarnaev ◽  
Zurab Kardanakhishvili ◽  
Boris Baykov
Keyword(s):  
Balloon Angioplasty ◽  
Primary Patency ◽  
Endovascular Intervention ◽  
Time Interval ◽  
Central Vein ◽  
Secondary Patency ◽  
Surgical Interventions ◽  
Endovascular Interventions ◽  
Vein Stenosis ◽  
Central Vein Stenosis

Abstract Background and Aims comparative analysis of the results of isolated balloon angioplasty (BA) and BA with stenting of central veins stenosis in patients on hemodialysis. Method A retrospective study included 62 patients with confirmed stenosis of the central veins: subclavian, brachiocephalic veins, vena cava inferior, or multiple lesions. In 39 patients, stents are not used; isolated balloon angioplasty (BA) was performed. In 23 patients we used bare metal stents. Results Functional primary patency (the time interval between the start of AVF using and the first endovascular intervention) did not differ in the groups – fig. 1A; HR 1.142 [95% CI 0.6875; 1.897], p = 0.5994. The use of stents leads to increase primary patency (the time interval between the first and second endovascular interventions) – fig. 1B; HR 2.064 [95% CI 1.252; 3.404], p = 0.0017. The use of stents allows to increase the functional secondary patency (total duration of use of the AVF) – fig 1C; HR 2.099 [95% CI 1.272; 3.463], p = 0.0016. Secondary patency (the time interval between the first endovascular intervention and the complete cessation of the use of AVF) was higher after BA with stenting: HR 2.03 [95% CI 1.232; 3.347], p = 0.0021; fig 1D. The use of stents allows to increase functional primary assisted patency (non-occlusive period from the start of AVF use) – fig. 1E and primary assisted patency (non-occlusive period from the first surgical intervention) – fig 1F: HR 1.936 [95% CI 1.175; 3.188], p= 0.0053 and HR 2.0 [95% CI 1.213; 3.295], p = 0.0042. The need for open reconstructive interventions after the first BA or BA with stenting was the same 0.374 [95% CI 0.24; 0.556] and 0.45 [95% CI 0.291; 0.664] per 10 patient-months, incidence rate ratio (IRR)= 0.831 [95% CI 0.471; 1.464] р=0.521. The need for endovascular interventions did not differ between isolated BA and BA with stenting 1.137 [95% CI 0.8913; 1.43] and 0.827 [95% CI 0.606; 1.104] per 10 patient-months, IRR=1.374 [95% CI 0.952; 1.999] p=0.09. Total need for surgical interventions (open + endovascular) also did not differ: 1.511 [95% CI 1.225; 1.843] and 1.277 [95% CI 0.997; 1.611] per 10 patient-months, IRR 1.183 [95% CI 0.872; 1.612] p=0.2822. We found a strong negative correlation between functional primary patency and primary patency (r = -0.627; p &lt;0.0001) – fig. 2, as well as a between functional primary patency and secondary patency in patients after isolated BA (= -0.53; p = 0.0005, respectively), but not after stenting (r = -0.351; p = 0.101 and r = -0.304; p = 0.159, respectively). In a case of isolated BA, the success of the first intervention largely determines the secondary patency, which is expressed in a strong, statistically significant positive correlation of primary patency and secondary patency. In a case of BA with stenting, the correlation between these estimates is also statistically significant, but significantly lower. Conclusion 1. The results of balloon angioplasty without stenting are significantly influenced by the duration of the period between the start of AVF use and the manifestation of central vein stenosis. 2. The use of stents can slightly improve the results of endovascular interventions in central vein stenosis, regardless the its time of development. 3. The use of stents leads to a moderate increase in the median patency of AVF and a significant increase in the proportion of patients with functional AVF in the late postoperative period. 4. The use of stents does not reduce the need for surgical interventions

scholarly journals Practice patterns of dual antiplatelet therapy after lower extremity endovascular interventions

2019 ◽  
Vol 24 (6) ◽  
pp. 528-535 ◽  
Author(s):  
Tanner I Kim ◽  
Julia F Chen ◽  
Kristine C Orion
Keyword(s):  
Lower Extremity ◽  
New England ◽  
Antiplatelet Therapy ◽  
Practice Patterns ◽  
Dual Antiplatelet Therapy ◽  
Endovascular Intervention ◽  
Endovascular Interventions ◽  
Vascular Bypass ◽  
Artery Disease

Antiplatelet therapy is commonly prescribed following endovascular interventions. However, there is limited data regarding the regimen and duration of antiplatelet therapy following lower extremity endovascular interventions. The aim of this study was to investigate the practice patterns of dual antiplatelet therapy (DAPT) after lower extremity endovascular interventions. We identified all patients who received an endovascular intervention in the Vascular Study Group of New England (VSGNE) registry from 2010 through 2018. The antiplatelet regimen was examined at the time of discharge and follow-up. Variables predicting discharge antiplatelet therapy and duration of antiplatelet therapy were investigated. There were 13,510 (57.69%) patients discharged on DAPT, 8618 (36.80%) patients discharged on single antiplatelet therapy, and 1292 (5.51%) patients discharged without antiplatelet therapy. Patients with coronary artery disease (CAD), prior vascular bypass and endovascular intervention, preoperative statin use, stent placement compared with angioplasty, and femoropopliteal and tibial treatment were associated with higher odds of being discharged with DAPT compared with no antiplatelet therapy and single antiplatelet therapy. Of the patients discharged on DAPT who were followed up at 9–12 months and 21–24 months, 56.49% and 49.63% remained on DAPT, respectively. Only a narrow margin of the patient majority undergoing endovascular interventions was discharged with DAPT, suggesting that only a small proportion of patients undergoing endovascular intervention remain on DAPT long-term. As the number of peripheral vascular interventions continues to grow, further studies are crucial to identify the optimal duration of DAPT.

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