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Emergency medical services for acute ischemic stroke: Hub-and-spoke model versus exclusive care in comprehensive centers.

ABSTRACT: BACKGROUND:The emergent disposition of acute stroke patients remains an issue of debate. We investigated whether a hub-and-spoke model was associated with worse stroke outcomes when compared to care exclusively in comprehensive centers. METHODS:We performed a cohort study of all acute ischemic stroke patients who were hospitalized in endovascular-capable facilities, and were registered in the New York Statewide Planning and Research Cooperative System (SPARCS) database from 2009 to 2015. We examined the association of transfer status (transfer to endovascular capable hospitals versus initial treatment in these facilities) with inpatient case-fatality, discharge to a facility, and length of stay (LOS). An instrumental variable analysis was used to control for unmeasured confounding and simulate a randomized trial. RESULTS:During the study period, 128,122 acute stroke patients met inclusion criteria. Instrumental variable analysis demonstrated that patients transferred to endovascular-capable hospitals did not have higher case-fatality (Adjusted difference, 4.4%; 95% CI, -0.1% to 9.0%), rate discharge to a facility (Adjusted difference, -2.3%; 95% CI, -5.2% to 0.6%), or longer LOS (Adjusted difference, 4.2; 95% CI, -2.2 to 10.1) in comparison to patients presenting for initial treatment in these facilities. The same associations were present when restricting the cohort to patients receiving intravenous tissue plasminogen (IV-tPA) and to patients receiving mechanical thrombectomy. CONCLUSIONS:Using a comprehensive all-payer cohort of acute ischemic stroke patients in New York State we demonstrated that patients treated in a hub-and-spoke model were not associated with worse outcomes than patients receiving care exclusively in comprehensive institutions. This needs to be taken into consideration when considering acute emergency services in this setting.

SUBMITTER: Bekelis K

PROVIDER: S-EPMC6326836 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Emergency medical services for acute ischemic stroke: Hub-and-spoke model versus exclusive care in comprehensive centers.

Bekelis Kimon K Missios Symeon S Coy Shannon S Mayerson Bruce B MacKenzie Todd A TA

Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 20181019

<h4>Background</h4>The emergent disposition of acute stroke patients remains an issue of debate. We investigated whether a hub-and-spoke model was associated with worse stroke outcomes when compared to care exclusively in comprehensive centers.<h4>Methods</h4>We performed a cohort study of all acute ischemic stroke patients who were hospitalized in endovascular-capable facilities, and were registered in the New York Statewide Planning and Research Cooperative System (SPARCS) database from 2009 t ...[more]

PMID: 30348588

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Project description:Background and Purpose- Recognition of stroke symptoms and hospital prenotification by emergency medical services (EMS) facilitate rapid stroke treatment; however, one-third of patients with stroke are unrecognized by EMS. To promote stroke recognition and quality measure compliant prehospital stroke care, we deployed a 30-minute online EMS educational module coupled with a performance feedback system in a single Michigan county. Methods- During a 24-month study period, a registry of consecutive EMS-transported suspected or unrecognized stroke cases was utilized to perform an interrupted time series analysis of the impact of the EMS education and feedback intervention. For each agency, we compared EMS stroke recognition and quality measure compliance rates, as well as emergency department performance and hospital outcomes during 12 preintervention months with performance in the remaining study months. Results- A total of 1805 EMS-transported cases met inclusion criteria; 1235 (68.4%) of these had ischemic or hemorrhagic strokes or transient ischemic attacks. There were no trends toward improvement in any outcome before the intervention. After the intervention, the EMS stroke recognition rate increased from 63.8% to 69.5% ( P=0.037). Prenotification increased from 60.9% to 77.3% ( P<0.001). Among patients with ischemic stroke/transient ischemic attack, there was a trend toward higher rates of tPA (tissue-type plasminogen activator) delivery (13.9%-17.7%; P=0.096) and a significant increase in tPA delivery within 45 minutes (5.7%-8.9%; P=0.042) after intervention. However, improvements in EMS recognition were limited to the first 3 months following intervention. Conclusions- A brief educational intervention was associated with improved EMS stroke recognition, hospital prenotification, and faster tPA delivery. Gains were primarily observed immediately following education and were not sustained through provision of performance feedback to paramedics.

Project description:BackgroundTo improve stroke care, the Brain Attack Coalition recommended establishing primary stroke center (PSC) and comprehensive stroke center (CSC) certification. This study aimed to compare ischemic stroke care and in-hospital outcomes between CSCs and PSCs.Methods and resultsWe analyzed patients with acute ischemic stroke who were hospitalized at stroke centers participating in Get With The Guidelines-Stroke from 2013 to 2015. Multivariable logistic regression models were generated to examine the association between stroke center certification (CSC versus PSC) and performances and outcomes. This study included 722 941 patients who were admitted to 134 CSCs and 1047 PSCs. Both CSCs and PSCs had good conformity to 7 performance measures and the summary defect-free care measure. Among emergency department admissions, CSCs had higher intravenous tPA (tissue-type plasminogen activator) and endovascular thrombectomy rates than PSCs (14.3% versus 10.3%, 4.1% versus 1.0%, respectively). Door to intravenous tPA time was shorter at CSCs (median, 52 versus 61 minutes; adjusted risk ratio, 0.92; 95% confidence interval, 0.89-0.95). More patients at CSCs had door to intravenous tPA time ≤60 minutes (79.7% versus 65.1%; adjusted odds ratio, 1.48; 95% confidence interval, 1.25-1.75). For transferred patients, CSCs and PSCs had comparable overall performance in defect-free care, except higher endovascular thrombectomy therapy rates. The overall in-hospital mortality was higher at CSCs in both emergency department admissions (4.6% versus 3.8%; adjusted odds ratio, 1.14; 95% confidence interval, 1.01-1.29) and transferred patients (7.7% versus 6.8%; adjusted odds ratio, 1.17; 95% confidence interval, 1.05-1.32). In-hospital outcomes were comparable between CSCs and PSCs in patients who received intravenous tPA or endovascular thrombectomy.ConclusionsCSCs and PSCs achieved similar overall care quality for patients with acute ischemic stroke. CSCs exceeded PSCs in timely acute reperfusion therapy for emergency department admissions, whereas PSCs had lower risk-adjusted in-hospital mortality. This information may be important for acute stroke triage and targeted quality improvement.

Project description:Background Emergency medical services (EMS) compliance with recommended prehospital care for patients with acute stroke is inconsistent; however, sources of variability in compliance are not well understood. The current analysis utilizes a linkage between a statewide stroke registry and EMS information system data to explore patient and EMS agency-level contributions to variability in prehospital care. Methods and Results This is a retrospective analysis of a cohort of confirmed stroke cases transported by EMS to hospitals participating in a statewide stroke registry. Using EMS information system data, the authors quantified EMS compliance with 6 performance measures derived from national guidelines for prehospital stroke care: prehospital stroke scale performance, glucose check, stroke recognition, on-scene time ≤15 minutes, time last known well documentation, and hospital prenotification. Multilevel multivariable logistic regression analysis was then used to examine associations between patient-level demographic and clinical characteristics and EMS compliance while accounting for and quantifying the variation attributable to agency of transport and recipient hospital. Over an 18-month period, EMS and stroke registry records were linked for 5707 EMS-transported stroke cases. Compliance ranged from 24% of cases for last known well documentation to 82% for documentation of a glucose check. The other measures were documented in approximately half of cases. Older age, higher National Institutes of Health Stroke Scale, and earlier presentation were associated with more compliant prehospital care. EMS agencies accounted for more than half of the variation in EMS prehospital stroke scale documentation and last known well documentation and 27% of variation in glucose check but <10% of stroke recognition and prenotification variability. Conclusions EMS stroke care remains highly variable across different performance measures and EMS agencies. EMS agency and electronic medical record type are important sources of variability in compliance with key prehospital performance metrics for stroke.

Dataset Information

Emergency medical services for acute ischemic stroke: Hub-and-spoke model versus exclusive care in comprehensive centers.

Publications

Emergency medical services for acute ischemic stroke: Hub-and-spoke model versus exclusive care in comprehensive centers.

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