Abstract W P55: Practice Diversity Among US Neurologists with Respect to the 3 to 4.5-Hour Window for Acute Stroke Thrombolysis

Stroke ◽  
2015 ◽  
Vol 46 (suppl_1) ◽  
Author(s):  
Sunil Mutgi ◽  
Nicholas Lafountain ◽  
Noah Grose ◽  
Michel T Torbey ◽  
Reza Behrouz

BACKGROUND: In 2009, the AHA/ASA endorsed extending the Acute Stroke IV tPA treatment window to 4.5 hours. Four additional exclusionary criteria were advised for treating patients in this extended window. It is unknown how the practice of stroke care has evolved since then. We developed an online survey aimed to evaluate the current practice patterns of neurologists when treating patients in the 3 to 4.5 hour therapeutic window. METHODS: We developed a survey utilizing SurveyMonkey.com. The survey included 6 questions, 1. Subspecialty, 2. Frequency of informed consent when giving IV tPA in the 3 to 4.5 hour window, 3-6. Frequency excluding patient's from treatment in the 3 to 4.5 hour window for any of the additional exclusionary criteria. Answer options for questions 2-6 included: always, often (>50% of the time), seldom(<50% of the time), and never. The publicly available AHA/ASA online member directory was utilized to identify physicians meeting criteria: Council: Stroke, Specialty: Neuro/Stroke, Country: USA. The electronic survey was sent by email to 1000 identified physicians. RESULTS: 260 physicians responded, 230 completed the survey in its entirety and were included in our results. Subspecialties were: 83% vascular neurology, 13% general neurology, and 3% other neurology. Informed consent was always obtained by 33%, often by 22%, seldom by 16%, and never by 28%. Responses for specific exclusion criteria for the 3 to 4.5-hour window were as follows: 1) 34% always excluded patients age >80, 23% often, 29% seldom, and 13% never; 2) 31% always excluded patients with concomitant history of diabetes mellitus and stroke, 21% often, 27% seldom, and 22% never; 3) 28% always excluded patients on warfarin with normal INR, 12% often, 15% seldom, and 46% never; 4) 36% always excluded patients with NIHSS >25, 24% often, 28% seldom, and 12% never. CONCLUSION: Among US neurologists who care for stroke patients, there is notable diversity in practice with respect to IV thrombolysis within the 3 to 4.5-hour window. This may depict disparities in individual interpretation and acknowledgement of the scientific data pertaining to the extended window. There is a tendency towards obtaining informed consent and adherence to all four exclusion criteria, but not universally.

Stroke ◽  
2015 ◽  
Vol 46 (suppl_1) ◽  
Author(s):  
Lindsay Olson-Mack ◽  
Darlene Bourdon ◽  
Barbara Kelley ◽  
Jon Ludwig ◽  
Gilda Tafreshi

Introduction: Emergency Departments (ED) are increasingly activating stroke codes based on assessment of stroke symptoms via Emergency Medical Services (EMS). Accurate assessment of stroke symptoms by EMS facilitates rapid assessment in the ED, leading to prompt diagnosis and treatment during an acute stroke. Delays in treatment can occur when stroke symptoms are not recognized in the field. Hypothesis: We hypothesized that trends existed in stroke symptoms most commonly missed by EMS. Methods: A retrospective cohort study of 170 records was reviewed, for all patients receiving acute stroke care at an urban hospital from October 2013 to May 2014. Inclusion criteria: stroke code activation by EMS or in the ED, and patient arrival by EMS. Exclusion criteria: stroke code activations after admission to the hospital, and patients arriving via private transportation. Results: 112 patients met the inclusion and exclusion criteria. 90 patients (80%) had stroke codes were initiated by EMS. The remaining 22 patients had stroke codes initiated by the ED MD after arrival. The records of the 22 patients arriving to the ED without advanced EMS notification were reviewed. Aphasia was documented in the EMS record for 8 patients (36%). An additional 8 patients (36%) with documented stroke symptoms arrived without EMS notification due to improving symptoms or unclear last known well time. Five of the 22 patients (23%) arriving without EMS pre-notification had had aaphasia documented as an initial finding by ED MD, had a stroke code activation and received IV tPA. One of the 5 patients (13%) also had improving symptoms documented by EMS. Conclusion: An opportunity exists for improved recognition of aphasia as a stroke symptom by EMS, including both expressive and receptive components. Likewise, further education is needed correlating aphasia with the likelihood of IV tPA initiation in the ED. This study also highlights the importance of recognizing the waxing and waning nature of stroke symptoms. Rapidly improving symptoms should not preclude stroke code initiation via EMS, as some of these patients are still IV tPA candidates.


2019 ◽  
Vol 9 (1) ◽  
pp. 16 ◽  
Author(s):  
Imama Naqvi ◽  
Emi Hitomi ◽  
Richard Leigh

Objective: To report a patient in whom an acute ischemic stroke precipitated chronic blood-brain barrier (BBB) disruption and expansion of vascular white matter hyperintensities (WMH) into regions of normal appearing white matter (NAWM) during the following year. Background: WMH are a common finding in patients with vascular risk factors such as a history of stroke. The pathophysiology of WMH is not fully understood; however, there is growing evidence to suggest that the development of WMH may be preceded by the BBB disruption in the NAWM. Methods: We studied a patient enrolled in the National Institutes of Health Natural History of Stroke Study who was scanned with magnetic resonance imaging (MRI) after presenting to the emergency room with an acute stroke. After a treatment with IV tPA, she underwent further MRI scanning at 2 h, 24 h, 5 days, 30 days, 90 days, 6 months, and 1-year post stroke. BBB permeability images were generated from the perfusion weighted imaging (PWI) source images. MRIs from each time point were co-registered to track changes in BBB disruption and WMH over time. Results: An 84-year-old woman presented after acute onset right hemiparesis, right-sided numbness and aphasia with an initial NIHSS of 13. MRI showed diffusion restriction in the left frontal lobe and decreased blood flow on perfusion imaging. Fluid attenuated inversion recovery (FLAIR) imaging showed bilateral confluent WMH involving the deep white matter and periventricular regions. She was treated with IV tPA without complication and her NIHSS improved initially to 3 and ultimately to 0. Permeability maps identified multiple regions of chronic BBB disruption remote from the acute stroke, predominantly spanning the junction of WMH and NAWM. The severity of BBB disruption was greatest at 24 h after the stroke but persisted on subsequent MRI scans. Progression of WMH into NAWM over the year of observation was detected bilaterally but was most dramatic in the regions adjacent to the initial stroke. Conclusions: WMH-associated BBB disruption may be exacerbated by an acute stroke, even in the contralateral hemisphere, and can persist for months after the initial event. Transformation of NAWM to WMH may be evident in areas of BBB disruption within a year after the stroke. Further studies are needed to investigate the relationship between chronic BBB disruption and progressive WMH in patients with a history of cerebrovascular disease and the potential for acute stroke to trigger or exacerbate the process leading to the development of WMH.


2021 ◽  
pp. 1-7
Author(s):  
Gabriel Velilla-Alonso ◽  
Andrés García-Pastor ◽  
Ángela Rodríguez-López ◽  
Ana Gómez-Roldós ◽  
Antonio Sánchez-Soblechero ◽  
...  

Introduction: We analyzed whether the coronavirus disease 2019 (COVID-19) crisis affected acute stroke care in our center during the first 2 months of lockdown in Spain. Methods: This is a single-center, retrospective study. We collected demographic, clinical, and radiological data; time course; and treatment of patients meeting the stroke unit admission criteria from March 14 to May 14, 2020 (COVID-19 period group). Data were compared with the same period in 2019 (pre-COVID-19 period group). Results: 195 patients were analyzed; 83 in the COVID-19 period group, resulting in a 26% decline of acute strokes and transient ischemic attacks (TIAs) admitted to our center compared with the previous year (p = 0.038). Ten patients (12%) tested positive for PCR SARS-CoV-2. The proportion of patients aged 65 years and over was lower in the COVID-19 period group (53 vs. 68.8%, p = 0.025). During the pandemic period, analyzed patients were more frequently smokers (27.7 vs. 10.7%, p = 0.002) and had less frequently history of prior stroke (13.3 vs. 25%, p = 0.043) or atrial fibrillation (9.6 vs. 25%, p = 0.006). ASPECTS score was lower (9 [7–10] vs. 10 [8–10], p = 0.032), NIHSS score was slightly higher (5 [2–14] vs. 4 [2–8], p = 0.122), onset-to-door time was higher (304 [93–760] vs. 197 [91.25–645] min, p = 0.104), and a lower proportion arrived within 4.5 h from onset of symptoms (43.4 vs. 58%, p = 0.043) during the CO­VID-19 period. There were no differences between proportion of patients receiving recanalization treatment (intravenous thrombolysis and/or mechanical thrombectomy) and in-hospital delays. Conclusion: We observed a reduction in the number of acute strokes and TIAs admitted during the COVID-19 period. This drop affected especially elderly patients, and despite a delay in their arrival to the emergency department, the proportion of patients treated with recanalization therapies was preserved.


2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
Elizabeth Ann Laird ◽  
Vivien E. Coates ◽  
Assumpta A. Ryan ◽  
Mark O. McCarron ◽  
Diane Lyttle ◽  
...  

Glucose derangement is commonly observed among adults admitted to hospital with acute stroke. This paper presents the findings from a descriptive cohort study that investigated the glucose monitoring practices of nurses caring for adults admitted to hospital with stroke or transient ischaemic attack. We found that a history of diabetes mellitus was strongly associated with initiation of glucose monitoring and higher frequency of that monitoring. Glucose monitoring was continued for a significantly longer duration of days for adults with a history of diabetes mellitus, when compared to the remainder of the cohort. As glucose monitoring was not routine practice for adults with no history of diabetes mellitus, the detection and treatment of hyperglycaemia and hypoglycaemia events could be delayed. There was a significant positive association between the admission hospital that is most likely to offer stroke unit care and the opportunity for glucose monitoring. We concluded that adults with acute stroke, irrespective of their diabetes mellitus status prior to admission to hospital, are vulnerable to both hyperglycaemic and hypoglycaemic events. This study suggests that the full potential of nurses in the monitoring of glucose among hospitalised adults with stroke has yet to be realised.


2020 ◽  
Author(s):  
Yaxin Liu ◽  
Tian Wu ◽  
Yun Kuang ◽  
Xiaoyi Ning ◽  
Jinlian Xie ◽  
...  

Abstract Background: Warfarin, a key anticoagulant medication, has a narrow therapeutic window and individual difference. Many warfarin dosing algorithms have been developed and been proved to have clinical benefits. However, the utilization of algorithms by medical professionals in China was unknown. We conducted an online survey to investigate the use and requirements of warfarin dosing algorithms among Chinese medical professionals. Method: A questionnaire survey was conducted via WeChat to investigate the utilization of warfarin dosing algorithms by medical professionals in seven regions of China. The content of questionnaire was included general characteristics of participants, condition of anticoagulant therapy, utilization of warfarin dosing algorithms and demand for function of an assistant warfarin dosing system we proposed.Results: A total of 399 participants completed the survey. Although most medical professionals use warfarin for anticoagulant therapy, some of them (15.04%) were not familiar with warfarin’s individual difference. As high as 32.97% of clinicians ruled out genotypes when using warfarin. The vast majority of anticoagulant medical professionals believed warfarin dosing algorithms can have clinical benefits, but only 20.80% of them usually use algorithms for anticoagulant therapy. Conclusion: Warfarin dosing algorithms have high evaluation while not good utilization among Chinese anticoagulant medical professionals. If warfarin dosing algorithms and assistant tools aimed to Chinese population were developed, to some extent can improve anticoagulant therapy in China.


Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Nancy D Papesh ◽  
James Gebel

Background: The Cleveland Clinic Health System (CCHS) consists of a large tertiary care center and 10 regional hospitals. It is organized both clinically and administratively into multispecialty organ based Institutes rather than departments. The CCHS re-introduced a regional initiative to standardize stroke care in 2008. Medina Hospital is a 118-bed community hospital in rural North-eastern Ohio, where there is a high stroke burden and previously minimal IV tPA use. Medina Hospital joined the CCHS Stroke Network in November 2009. Hypothesis: We hypothesized that after joining the formally organized stroke CCHS system of care, the proportion of stroke patients receiving IV tPA and the timeliness of administration of acute thrombolytic therapy would both significantly increase. Methods: Data was analyzed from our prospective participation in the Get with the Guidelines-Stroke and the Ohio Coverdell Stroke Registries. Baseline data regarding quality, outcomes and stroke performance measures were reviewed. CCHS initially supported acute stroke care in early 2010 with a telemedicine cart and then introduced 24/7 emergency, on-site, CCHS neurologist, acute stroke call coverage in late 2010. Standardized CCHS stroke care pathways and order sets were also introduced in 2010. The proportion of stroke patients treated with IV tPA in 2010 and 2011 (post- joining CCHS) was compared to 2009 (2-sided Fisher’s exact test), and door-to-needle times were compared from 2010 to 2011 (unpaired t-test). Results: IV tPA treatment utilization increased from 0/69 patients (0%) in 2009 to 9/67 patients (11.8%) in 2010 [exact p=.0033] and 11/46 (19.3%) in the first 7 months of 2011 [exact p=.0001]. Door-to-needle times improved from a mean of 81.4 (95%CI 66.4 to 96.4) minutes in 2010 to 61.7 (95% CI 52.7 to 70.8) minutes in 2011 (p=.0158). Conclusions: Participation in an organized formal collaborative regional hospital stroke treatment network resulted in dramatic improvements from zero IV tPA utilization to greatly exceeding the national benchmark averages for both percentage treatment with IV tPA and door-to-needle time in a rural area where patients previously had minimal access to acute stroke expertise.


Stroke ◽  
2014 ◽  
Vol 45 (suppl_1) ◽  
Author(s):  
Lindsay Olson-Mack ◽  
Jacqueline Reardon ◽  
Elton Hedden ◽  
Rowena Carino ◽  
Cynthia VanWyk ◽  
...  

Background and Purpose: Emergency Department (ED) physicians often manage acute stroke patients without Neurology support at the bedside. Without guidance, they are left to rapidly assess, diagnose and treat acute stroke patients with minimal follow up on treatment effectiveness and patient outcomes. We hypothesized that introducing a Nurse Practitioner (NP) as Stroke Champion into an ED that did not have access to in-house Neurology would drive awareness of acute stroke care, and positively change practice to decrease door to needle times. Methods: The NP started in the 24-bed ED in June 2012. The average daily census of the ED for 2012 was 135 patients per day, and from January to June 2012, ED physicians initiated 46 stroke codes. Although Neurologists were available via telephone, ED physicians were left to accurately assess and initiate stroke codes, determine eligibility, and order IV tPA. In collaboration with the Stroke Medical Director, the Stroke NP conducted multiple education sessions regarding timing metrics in acute stroke care and door to tPA goals with ED clinicians, radiology, lab and pharmacy departments. Data was shared with stakeholders monthly to drive performance improvement initiatives. Results: Rapid improvements were made in all metrics. Mean time to CT first image improved by 19.3 minutes (37.3 to 18.0 minutes) in 6 months, and to 14.7 minutes in 1 year. CT result mean turn-around-time decreased by 19 minutes (from 54.0 to 29.1 minutes) in the first 6 months, and by 22.6 minutes (from 54.0 to 26.0 minutes) at 12 months. Likewise, laboratory result turn-around-times dramatically decreased by a mean of 15.9 minutes (54.4 to 38.5 minutes) over 6 months, and by a mean of 23 minutes (54.4 to 31.0 minutes) within 12 months. IV tPA treatment rates increased from 5% to 14.4% of all ischemic strokes. Door to IV tPA treatment times decreased by a mean of 33.9 minutes (104.5 to 70.6 minutes) in 6 months, and by 46.8 minutes (from 104.5 to 57.7 minutes) within the year. Conclusions: Introducing an NP into the ED to serve as Stroke Champion can provide added support to improve care of acute stroke patients by expediting assessment and treatment.


Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Shelley Nichols ◽  
Debbie Camp ◽  
McCord Smith ◽  
Chris Threlkeld ◽  
James Lugtu ◽  
...  

Background: As treatment of acute ischemic stroke (AIS) with IV tPA has become standard of care, smaller hospitals with limited resources have struggled to conform to consensus guidelines. To fill this practice gap, stroke systems of care were developed to support smaller, often rural, hospitals in providing standard stroke care to the patients they serve. Methods: As a result of legislative support from the Coverdell-Murphy Act, the Georgia Coverdell Acute Stroke Registry (GCASR) in collaboration with the Georgia Office of EMS (GA OEMS), the Georgia Hospital Association (GHA), and other state partners, developed a method for designating hospitals as Remote Treatment Stroke Centers (RTSC). The primary focus of performance improvement was treatment with IV tPA in eligible patients. Data collection and process change were used to improve the following quality indicators: percentage of eligible AIS patients treated with IV tPA and number of stroke alert notifications. Hospitals were required to partner with an accredited stroke center and use telemedicine to support the decision for administering IV tPA. GA OEMS was charged with reviewing and surveying individual hospitals applying for RTSC status. The GCASR served as the central repository to facilitate data sharing and benchmarking across hospitals. An inter-hospital transfer tool was created for EMS providers, adopted by GA OEMS, and disseminated throughout the state to guide management of patients receiving IV tPA who required transfer from a RTSC to an accredited stroke center. Results: Starting in 2014, pertinent information was distributed and assistance provided to the 24 RTSC eligible GCASR hospitals. At present, 4 hospitals have achieved designation; 1 hospital is pending survey; and several are considering application. In 2012-13 the now 4 RTSC hospitals gave IV tPA to 8 patients. In 2014-15 as these hospitals sought and achieved designation, this number rose to 24. During this same period, stroke alerts increased from 76 to 308. Conclusion: A state-based public health stroke initiative is effective in facilitating the designation of RTSC and thereby improving the delivery of acute stroke care in underserved areas.


Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Radoslav I Raychev ◽  
Dana Stradling ◽  
David M Brown ◽  
Joey R Gee ◽  
David L Lombardi ◽  
...  

Introduction: In an effort to maximize provision of acute stroke therapies, the Emergency Medical Services (EMS) in Orange County, CA (6 th most populous U.S. county) established a system of care whereby patients with suspected acute stroke are taken to hub sites with endovascular treatment (EVT) capability or to spoke hospitals. Patients at spokes with acute ischemic stroke (AIS) and suspected large vessel occlusion (LVO) are transferred by EMS to hubs. Here we examined the relationship between stroke features, hospital transfers, and mortality; and their change over time. Methods: All patients during 2013-2015 were included for whom 911 was called within 7 hours of onset, and EMS personnel declared “acute stroke" at end of initial evaluation. Results: A total of 6,188 patients (mean age 72) had suspected stroke, of which 54.9% were AIS and 19.4% hemorrhagic stroke. Across all patients, transfer rates into hub sites increased over time (OR 1.12 per 3-months, p<0.0001) and differed by diagnosis (p<0.0001), with transfer in 12.0% of hemorrhages (n=122) but only 3.5% of AIS (n=101). Among patients with AIS only, transfer rates into a hub site increased over time (OR 1.08, p<0.0001), spiking mid-2015. Acute reperfusion therapy was given to 28.3% (20.9% IV tPA only, 3.6% IA therapy only, 3.8% IV tPA+IA), but its usage was unrelated to transfer status, and only 11% of all transferred AIS patients received EVT. Across all patients, mortality during acute hospitalization was 8.2% and did not differ by transfer status, but did differ by diagnosis (p<0.0001): 23.6% of hemorrhages vs. 5.4% of AIS. Over time, mortality decreased only among patients with AIS (OR 0.95, p=0.03). Conclusions: There were several favorable features of this acute stroke care system, including that 28.3% of AIS patients received reperfusion therapy and that mortality decreased over time. However, while transfer to EVT-ready sites increased, rates of IA therapy were low. Continued efforts to optimize acute stroke systems of care should be tailored toward increasing EVT by early recognition of LVO and timely triage to hub facilities.


Author(s):  
Muhammad A Pervez ◽  
Joshua N Goldstein ◽  
Natalia S Rost ◽  
Joyce Mclntyre ◽  
Joseph Fay ◽  
...  

Background: National guidelines recommend eligible acute stroke patients undergo neuroimaging within 25 min and IV tPA within 60 min. In order to reduce door-to-needle time, we implemented an “ED2CT” virtual group pager which allows ED staff to simultaneously activate the Stroke Team, neuroradiologists, CT technologists, nursing supervisors and pharmacists. Methods: We performed an IRB approved retrospective review of a prospectively acquired cohort of consecutive patients with ischemic stroke presenting to a single tertiary stroke center using our Get With the Guidelines Stroke (GWTG-S) database. We compared patients who received IV tPA within 3 hours of symptom onset pre- (March 2006-April 2008) to post-intervention (September 2008-December 2009) by Wilcoxon or Fisher's exact as appropriate. Results: Overall, there were 56 patients in the pre-intervention and 53 in the post-intervention groups. Patients were 50.5% male, median age was 76 [IQR 63, 85] years, median time to presentation was 50 [IQR 33, 87] min, and median initial NIHSS was 14 [IQR 8, 20]. None of these variables were significantly different between the pre- and post-intervention groups. Implementation of the ED2CT alert was associated with a reduction of 31% in door-to-CT time (29 [22, 40] vs. 20 [16, 29] min; p=<0.001) and 13.5% in door-to needle time (59 [42, 78] vs. 51 [35, 62] min; p=0.02). In addition, there was an increase of 55% in the proportion of patients undergoing CT within 25 min (42.9% vs.66.7 % p=0.01) and 39% in door-to needle within 60 min (51.8% vs. 72.0% p=0.03). Symptomatic intracerebral hemorrhage (sICH) was infrequent among patients receiving IV tPA with or without rescue IA reperfusion (n=109, 8.3%) and those with IV tPA only (n=83, 6.0%); there was a trend in reduced sICH rate post intervention (11.6% vs. 0%; p=0.06). Conclusions: A novel emergency alert system with which the ED attending directly activates multiple members of the acute stroke clinical and imaging team was associated with an improved door-CT time and improved door-tPA time without an increased risk of sICH. This approach aligns acute stroke care activation with trauma and emergency cardiac care and suggests that team-based approaches may be better than specialty -specific responses.


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