Publications by authors named "Chloe A Mutimer"

Introduction: The predictive value of CT markers of intracerebral haemorrhage (ICH) expansion is time-dependent, but data in the ultra-early period (<2 h from onset) are limited. We aimed to describe the frequency of these CT markers, their association with haematoma volume, haematoma expansion (HE) and functional outcome at 90-days. We also investigated the effect of tranexamic acid on HE in the presence of these markers.

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Historically, patients with ischemic stroke and an extensive region of irreversibly injured ischemic core were excluded from endovascular thrombectomy trials due to concerns about limited benefit and high procedural risk. This has fundamentally changed with the publication of five strongly positive randomized controlled trials in this group of patients since 2022 and a sixth trial that showed consistent trends and was positive in per protocol analysis and long-term follow-up. This narrative review summarizes the key findings of these trials, including imaging selection criteria, functional and safety outcomes, and long-term benefits.

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Introduction: Cerebral amyloid angiopathy (CAA) is a cerebrovascular condition, the severity of which can only be determined post mortem. Here, we developed machine learning models, the Florey CAA Score (FCAAS), to predict CAA severity (none/mild/moderate/severe).

Methods: Building on an auto-score-ordinal algorithm, the FCAAS models were developed and validated using data collected by three cohort studies of aging and dementia.

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Background: There are limited data on ultra-early hematoma growth dynamics and their clinical impact in primary intracerebral hemorrhage (ICH). We aimed to estimate the incidence of hematoma expansion within the hyperacute period of ICH, describe hematoma dynamics over time, investigate the associations between ultra-early hematoma expansion and clinical outcomes after ICH, and assess the effect of tranexamic acid on ultra-early hematoma expansion.

Methods: We performed a preplanned secondary analysis of the STOP-MSU trial (Stopping Intracerebral Hemorrhage With Tranexamic Acid for Hyperacute Onset Presentation Including Mobile Stroke Units), which compared tranexamic acid with placebo in 201 patients with primary ICH presenting within 2 hours of symptom onset.

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Article Synopsis
  • The no-reflow phenomenon may lead to poor patient outcomes after thrombectomy, with various imaging definitions leading to inconsistent prevalence rates.
  • An analysis of 131 patients showed significant variability in no-reflow prevalence (0.8-22.1%) and poor agreement between different imaging definitions regarding patient outcomes.
  • The definition based on >15% cerebral blood volume or flow asymmetry was most effective in predicting poor clinical outcomes 90 days post-treatment.
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Purpose Of Review: When compared to ischaemic stroke, there have been limited advances in acute management of intracerebral haemorrhage. Blood pressure control in the acute period is an intervention commonly implemented and recommended in guidelines, as elevated systolic blood pressure is common and associated with haematoma expansion, poor functional outcomes, and mortality. This review addresses the uncertainty around the optimal blood pressure intervention, specifically timing and length of intervention, intensity of blood pressure reduction and agent used.

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Article Synopsis
  • Cardiovascular disease, particularly stroke incidence, is a significant health issue among Indigenous populations, yet there is limited research available on this topic.
  • A systematic review of literature from 1990 to 2022 identified 24 studies across seven developed countries, revealing higher stroke incidence rates among various Indigenous groups compared to non-Indigenous populations.
  • The studies varied in design and quality, with many lacking adequate involvement of Indigenous stakeholders and not meeting established reporting standards for Indigenous health research.
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Cerebral amyloid angiopathy is a devastating cause of intracerebral hemorrhage for which there is no specific secondary stroke prevention treatment. Here we review the current literature regarding cerebral amyloid angiopathy pathophysiology and treatment, as well as what is known of the fibrinolytic pathway and its interaction with amyloid. We postulate that tranexamic acid is a potential secondary stroke prevention treatment agent in sporadic cerebral amyloid angiopathy, although further research is required.

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Background: The size of the measured margin for excision of a keratinocyte cancer is often discussed; however, a technique for marking the skin is rarely described.

Objective: The aim of this article is to describe a method for marking a lesion for excision.

Discussion: The key to surgical excision of a keratinocyte cancer is the assessment of the tumour border in good light under loupe magnification and delineation using a skin marker.

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