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Endovascular clot retrieval for acute ischaemic stroke in New Zealand.
New Zealand Medical Journal 2018 October 27
AIMS: Stroke endovascular clot retrieval (ECR) in patients with large proximal vessel occlusion improves clinical outcomes. We present the New Zealand ECR experience.
METHODS: All New Zealand patients treated with ECR since 2011 were included. Patients were considered eligible if they were independent prior to stroke and had proximal intracranial arterial occlusion.
RESULTS: Three hundred and twelve patients [136 women, mean (SD) age of 64 (17) years] from 11 district health boards have been treated between March 2011 and April 2018. There were 260 (83%) patients with anterior and 52 (17%) with posterior circulation arterial occlusion. One hundred and ninety-three (62%) patients were pre-treated with intravenous alteplase. The median time from symptom onset to groin puncture was 210 (range 65-985) minutes. Complete or near-complete recanalisation (Thrombolysis in Cerebral Infarction scores of 3 or 2b) was achieved in 260 of 300 (87%) and the National Institutes of Health Stroke Scale score improved from a median of 18 at baseline to 7 at 24 hours. By day 90, 55% of the anterior circulation patients and 40% of the posterior circulation patients were living independently at home. Mortality rates were 20% for anterior circulation patients and 30% for the posterior circulation patients.
CONCLUSIONS: This study has shown that stroke endovascular clot retrieval is being provided safely and effectively in New Zealand. However, there remain discrepancies in service provision, and ongoing regional, inter-regional and inter-sector collaboration is essential to implement comprehensive and equitable ECR services across the country.
METHODS: All New Zealand patients treated with ECR since 2011 were included. Patients were considered eligible if they were independent prior to stroke and had proximal intracranial arterial occlusion.
RESULTS: Three hundred and twelve patients [136 women, mean (SD) age of 64 (17) years] from 11 district health boards have been treated between March 2011 and April 2018. There were 260 (83%) patients with anterior and 52 (17%) with posterior circulation arterial occlusion. One hundred and ninety-three (62%) patients were pre-treated with intravenous alteplase. The median time from symptom onset to groin puncture was 210 (range 65-985) minutes. Complete or near-complete recanalisation (Thrombolysis in Cerebral Infarction scores of 3 or 2b) was achieved in 260 of 300 (87%) and the National Institutes of Health Stroke Scale score improved from a median of 18 at baseline to 7 at 24 hours. By day 90, 55% of the anterior circulation patients and 40% of the posterior circulation patients were living independently at home. Mortality rates were 20% for anterior circulation patients and 30% for the posterior circulation patients.
CONCLUSIONS: This study has shown that stroke endovascular clot retrieval is being provided safely and effectively in New Zealand. However, there remain discrepancies in service provision, and ongoing regional, inter-regional and inter-sector collaboration is essential to implement comprehensive and equitable ECR services across the country.
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