Impact of Evidence-Based Stroke Care on Patient Outcomes: A Multilevel Analysis of an International Study

Paula Muñoz Venturelli, Xian Li, Sandy Middleton, Caroline Watkins, Pablo M Lavados, Verónica V Olavarría, Alejandro Brunser, Octavio Pontes-Neto, Taiza E G Santos, Hisatomi Arima, Laurent Billot, Maree L Hackett, Lily Song, Thompson Robinson, Craig S Anderson, HEADPOST (Head Positioning in Acute Stroke Trial) Investigators, Paula Muñoz Venturelli, Xian Li, Sandy Middleton, Caroline Watkins, Pablo M Lavados, Verónica V Olavarría, Alejandro Brunser, Octavio Pontes-Neto, Taiza E G Santos, Hisatomi Arima, Laurent Billot, Maree L Hackett, Lily Song, Thompson Robinson, Craig S Anderson, HEADPOST (Head Positioning in Acute Stroke Trial) Investigators

Abstract

Background The uptake of proven stroke treatments varies widely. We aimed to determine the association of evidence-based processes of care for acute ischemic stroke ( AIS ) and clinical outcome of patients who participated in the HEADPOST (Head Positioning in Acute Stroke Trial), a multicenter cluster crossover trial of lying flat versus sitting up, head positioning in acute stroke. Methods and Results Use of 8 AIS processes of care were considered: reperfusion therapy in eligible patients; acute stroke unit care; antihypertensive, antiplatelet, statin, and anticoagulation for atrial fibrillation; dysphagia assessment; and physiotherapist review. Hierarchical, mixed, logistic regression models were performed to determine associations with good outcome (modified Rankin Scale scores 0-2) at 90 days, adjusted for patient and hospital variables. Among 9485 patients with AIS, implementation of all processes of care in eligible patients, or "defect-free" care, was associated with improved outcome (odds ratio, 1.40; 95% CI, 1.18-1.65) and better survival (odds ratio, 2.23; 95% CI , 1.62-3.09). Defect-free stroke care was also significantly associated with excellent outcome (modified Rankin Scale score 0-1) (odds ratio, 1.22; 95% CI , 1.04-1.43). No hospital characteristic was independently predictive of outcome. Only 1445 (15%) of eligible patients with AIS received all processes of care, with significant regional variations in overall and individual rates. Conclusions Use of evidence-based care is associated with improved clinical outcome in AIS . Strategies are required to address regional variation in the use of proven AIS treatments. Clinical Trial Registration URL : https://www.clinicaltrials.gov . Unique Identifier: NCT02162017.

Keywords: acute stroke care; multilevel analysis; outcome; quality.

Figures

Figure 1
Figure 1
Patient flow diagram.
Figure 2
Figure 2
“Defect‐free” stroke care and good outcome (modified Rankin Scale [mRS] scores 0–2) at 90 days, by subgroups. AIS indicates acute ischemic stroke; NIHSS, National Institutes of Health Stroke Scale; OR, odds ratio.
Figure 3
Figure 3
Impact in 90‐day mortality of “defect‐free” stroke care in different prespecified subgroups. AIS indicates acute ischemic stroke; NIHSS, National Institutes of Health Stroke Scale; OR, odds ratio.

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