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Author Ronda Lun

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Predicting long-term outcomes in acute intracerebral haemorrhage using delayed prognostication scores.

Ronda Lun, Vignan Yogendrakumar, Tim Ramsay, Michel Shamy, Robert Fahed, Magdy H Selim, Dar Dowlatshahi,

<h4>Objective</h4>The concept of the 'self-fulfilling prophecy' is well established in intracerebral haemorrhage (ICH). The ability to improve prognostication and prediction of long-term outcomes during the first days of hospitalisation is important in guiding conversations around goals of care. We previously demonstrated that incorporating delayed imaging into various prognostication scores for ... Read more >>

Stroke Vasc Neurol (Stroke and vascular neurology)
[2021, :]

Cited: 0 times

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Thrombectomy for Comatose Patients with Basilar Artery Occlusion : A Multicenter Study.

Adrien Guenego, Ludovic Lucas, Benjamin Gory, Sébastien Richard, Mathilde Aubertin, David Weisenburger-Lile, Julien Labreuche, Cyril Dargazanli, Amel Benali, Romain Bourcier, Lili Detraz, Stéphane Vannier, Maud Guillen, François Eugene, Gregory Walker, Ronda Lun, Andrew Wormsbecker, Célina Ducroux, Michel Piotin, Raphael Blanc, Arturo Consoli, Bertrand Lapergue, Robert Fahed, ,

<h4>Purpose</h4>Acute ischemic stroke (AIS) secondary to a basilar artery occlusion (BAO) carries a poor prognosis, especially in cases of severe symptoms, such as coma at presentation. Despite a lack of evidence, mechanical thrombectomy (MT) is often performed as the procedural risks are felt to be minimal compared to the natural history. We sought ... Read more >>

Clin Neuroradiol (Clinical neuroradiology)
[2021, :]

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Thrombectomy for Basilar Artery Occlusion with Mild Symptoms.

Adrien Guenego, Cyril Dargazanli, David Weisenburger-Lile, Benjamin Gory, Sébastien Richard, Célina Ducroux, Michel Piotin, Raphael Blanc, Julien Labreuche, Ludovic Lucas, Mathilde Aubertin, Amel Benali, Romain Bourcier, Lili Detraz, Stéphane Vannier, Maud Guillen, François Eugene, Gregory Walker, Ronda Lun, Arturo Consoli, Bertrand Lapergue, Robert Fahed, ,

<h4>Background and objective</h4>To evaluate outcomes of thrombectomy in patients with a basilar artery occlusion (BAO) and mild symptoms, defined by an initial National Institutes of Health Stroke Scale (NIHSS) score ≤6.<h4>Methods</h4>We performed a retrospective analysis of a multicenter prospective cohort of consecutive patients with acute ischemic stroke with BAO who ... Read more >>

World Neurosurg (World neurosurgery)
[2021, :]

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Is This Contrast? Is This Blood? An Agreement Study on Post-thrombectomy Computed Tomography Scans.

Ronda Lun, Gregory B Walker, Adrien Guenego, Mohammed Kassab, Eduardo Portela, Vignan Yogendrakumar, George Medvedev, Ken Wong, Michel Shamy, Dar Dowlatshahi, Robert Fahed,

<b>Background:</b> Hemorrhagic transformation after acute ischemic stroke is a dreaded and severe complication of thrombolysis and thrombectomy. However, its detection on post-thrombectomy conventional non-contrast computed tomography (CT) scan can be complicated by the frequent (and sometimes concomitant) presence of contrast, resulting in changes in management. <b>Aims:</b> Our objective was to ... Read more >>

Front Neurol (Frontiers in neurology)
[2020, 11:593098]

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Revised intracerebral hemorrhage expansion definitions: Relationship with care limitations.

Ronda Lun, Vignan Yogendrakumar, Greg Walker, Michel Shamy, Robert Fahed, Adnan Qureshi, Dar Dowlatshahi,

<h4>Background</h4>Hematoma expansion is an important therapeutic target in intracerebral hemorrhage. Recently proposed hematoma expansion definitions have not been validated, and no previous definition has accounted for withdrawal of care.<h4>Aims</h4>To externally validate revised definitions of hematoma expansion that incorporate intraventricular hemorrhage, and to test their validity in the context of withdrawal ... Read more >>

Int J Stroke (International journal of stroke : official journal of the International Stroke Society)
[2020, :1747493020967255]

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Advanced consent for participation in acute care randomised control trials: protocol for a scoping review.

Naomi Niznick, Ronda Lun, Brian Dewar, Dar Dowlatshahi, Michel Shamy,

<h4>Introduction</h4>Informed consent is essential to clinical research, though obtaining informed consent for participation in research for emergency conditions is challenging. Adapted consent methods include consent from a substitute-decision maker, deferral of consent and waiver of consent. A novel approach is to use advanced consent, where a potential participant provides consent ... Read more >>

BMJ Open (BMJ open)
[2020, 10(10):e039172]

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Transition to virtual appointments for interventional neuroradiology due to the COVID-19 pandemic: a survey of satisfaction.

Ronda Lun, Gregory Walker, Zeinab Daham, Tim Ramsay, Eduardo Portela de Oliveira, Mohammed Kassab, Robert Fahed, Aiman Quateen, Howard Lesiuk, Marlise P Dos Santos, Brian Drake,

<h4>Background</h4>The COVID-19 pandemic has changed the way medicine is practiced, including the implementation of virtual care in many specialties. In the field of interventional neuroradiology (INR), virtual clinics are an uncommon practice with minimal literature to support its use. Our objective was to report prospective, single-centre data regarding patient and ... Read more >>

J Neurointerv Surg (Journal of neurointerventional surgery)
[2020, 12(12):1153-1156]

Cited: 1 time

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Natural history of recovery after intracerebral haemorrhage: a scoping review protocol.

Sara Massicotte, Ronda Lun, Vignan Yogendrakumar, Brian Dewar, Alexandra Davies, Dean A Fergusson, Michel Shamy, Dar Dowlatshahi,

<h4>Introduction</h4>Clinical trials for intracerebral haemorrhage typically measure outcomes in the same way and at the same time points as trials for ischaemic stroke. However, there is growing evidence that the trajectory of recovery following intracerebral haemorrhage may differ significantly from that following ischaemic stroke. A better understanding of current approaches ... Read more >>

BMJ Open (BMJ open)
[2020, 10(8):e039460]

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Venous thromboembolism prevention in intracerebral hemorrhage: A systematic review and network meta-analysis.

Vignan Yogendrakumar, Ronda Lun, Faizan Khan, Kristin Salottolo, Karine Lacut, Catriona Graham, Martin Dennis, Brian Hutton, Philip S Wells, Dean Fergusson, Dar Dowlatshahi,

<h4>Introduction</h4>To summarize and compare the effectiveness of pharmacological thromboprophylaxis to pneumatic compression devices (PCD) for the prevention of venous thromboembolism in patients with acute intracerebral hemorrhage.<h4>Methods</h4>MEDLINE, PUBMED, EMBASE, and CENTRAL were systematically searched to identify randomized and non-randomized studies that compared each intervention directly to each other or against a ... Read more >>

PLoS One (PloS one)
[2020, 15(6):e0234957]

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Clinical Reasoning: Recurrent strokes secondary to unknown vasculopathy.

Ronda Lun, Naomi Niznick, Ruth Padmore, Jonathan Mack, Michel Shamy, Grant Stotts, Dylan Blacquiere,

Neurology (Neurology)
[2020, 94(22):e2396-e2401]

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Calculation of Prognostic Scores, Using Delayed Imaging, Outperforms Baseline Assessments in Acute Intracerebral Hemorrhage.

Ronda Lun, Vignan Yogendrakumar, Andrew M Demchuk, Richard I Aviv, David Rodriguez-Luna, Carlos A Molina, Yolanda Silva, Imanuel Dzialowski, Adam Kobayashi, Jean-Martin Boulanger, Gordon Gubitz, Padma Srivastava, Jayanta Roy, Carlos S Kase, Rohit Bhatia, Michael D Hill, Dar Dowlatshahi,

Background and Purpose- Patients with intracerebral hemorrhage (ICH) are often subject to rapid deterioration due to hematoma expansion. Current prognostic scores are largely based on the assessment of baseline radiographic characteristics and do not account for subsequent changes. We propose that calculation of prognostic scores using delayed imaging will have ... Read more >>

Stroke (Stroke)
[2020, 51(4):1107-1110]

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A Delayed Modified ICH Score Outperforms Baseline Scoring in Acute Intracerebral Hemorrhage.

Ronda Lun, Vignan Yogendrakumar, Dylan Blacquiere, Michel Shamy, Grant Stotts, Dar Dowlatshahi,

The Modified Intracerebral Hemorrhage (MICH) score is a simple tool created to provide prognostication in basal ganglia hemorrhages. Current prognostic scores, including the MICH, are based on the assessment of baseline patient characteristics, failing to account for significant developments, such as intraventricular extension and clinical deterioration, which may occur over ... Read more >>

Neurohospitalist (The Neurohospitalist)
[2020, 10(3):217-220]

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Comparing pharmacological venous thromboembolism prophylaxis to intermittent pneumatic compression in acute intracerebral haemorrhage: protocol for a systematic review and network meta-analysis.

Vignan Yogendrakumar, Ronda Lun, Brian Hutton, Dean A Fergusson, Dar Dowlatshahi,

<h4>Introduction</h4>Patients with an intracerebral haemorrhage are at increased risk of venous thromboembolism. Pharmacotherapy and pneumatic compression devices are capable of preventing venous thromboembolism, however both interventions have limitations. There are no head-to-head comparisons between these two interventions. To address this knowledge gap, we plan to perform a systematic review and ... Read more >>

BMJ Open (BMJ open)
[2018, 8(11):e024405]

Cited: 2 times

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