Karim Mahawish

ORCID: 0000-0003-2256-6470
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About
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Research Areas
  • Acute Ischemic Stroke Management
  • Intracerebral and Subarachnoid Hemorrhage Research
  • Stroke Rehabilitation and Recovery
  • Cerebrovascular and Carotid Artery Diseases
  • Atrial Fibrillation Management and Outcomes
  • Neurosurgical Procedures and Complications
  • Venous Thromboembolism Diagnosis and Management
  • Intracranial Aneurysms: Treatment and Complications
  • Neurological and metabolic disorders
  • Blood Pressure and Hypertension Studies
  • Case Reports on Hematomas
  • Spinal Hematomas and Complications
  • Botulinum Toxin and Related Neurological Disorders
  • Cerebral Venous Sinus Thrombosis
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Alcoholism and Thiamine Deficiency
  • Infectious Encephalopathies and Encephalitis
  • Antiplatelet Therapy and Cardiovascular Diseases
  • Electrolyte and hormonal disorders
  • Cerebrovascular and genetic disorders
  • Facial Rejuvenation and Surgery Techniques
  • Long-Term Effects of COVID-19
  • IgG4-Related and Inflammatory Diseases
  • Autoimmune and Inflammatory Disorders
  • Moyamoya disease diagnosis and treatment

Auckland University of Technology
2024-2025

Palmerston North Hospital
2020-2025

Middlemore Hospital
2023-2025

Counties Manukau District Health Board
2022-2023

Muhimbili University of Health and Allied Sciences
2021

Catholic University of Health and Allied Sciences
2021

Rotorua Hospital
2017-2019

Warrington Hospital
2012-2015

Warrington and Halton Teaching Hospitals NHS Foundation Trust
2012

Aintree University Hospital
2009-2010

Duncan Wilson David Seiffge Christopher Traenka Ghazala Basir Jan Purrucker and 95 more Timolaos Rizos Oluwaseun A. Sobowale Hanne Sallinen Shin‐Joe Yeh Teddy Y. Wu Marc Ferrigno Rik Houben Floris H.B.M. Schreuder Luke A. Perry Jun Tanaka Marion Boulanger Rustam Al‐Shahi Salman Hans Rolf Jäger Gareth Ambler Clare Shakeshaft Yusuke Yakushiji Philip Choi Julie Staals Charlotte Cordonnier Jiann‐Shing Jeng Roland Veltkamp Dar Dowlatshahi Stefan T. Engelter Adrian Parry‐Jones Atte Meretoja David J. Werring Louise Shaw Jane Sword Azlisham Mohd Pankaj Sharma Deborah F. Kelly Frances Harrington Nikola Sprigg Marc Randall Matthew Smith Karim Mahawish Abduelbaset Elmarim Bernard Esisi Claire Cullen Arumug Nallasivam Christopher Price Adrian Barry Christine Roffe John Coyle Ahamad Hassan Caroline Lovelock Jonathan Birns David Cohen Lakshmanan Sekaran Adrian Parry‐Jones Anthea Parry David Hargroves Harald Proschel Prabel Datta Khaled Darawil Aravindakshan Manoj Mathew Burn Chris Patterson Elio Giallombardo Nigel Smyth Syed Mansoor Ijaz Anwar Rachel Marsh Sissi Ispoglou Dinesh Chadha Mathuri Prabhakaran Sanjeevikumar Meenakishundaram Janice O’Connell Jon Scott Srinivas Murthy Prasanna Aghoram Michael McCormick Paul O’Mahony Martin Cooper Lillian Choy Peter Wilkinson Simon Leach Sarah Caine Ilse Burger Gunaratam Gunathilagan Paul Guyler Hedley Emsley Michelle Davis Dulka Manawadu Kath Pasco Maam Mamun Robert Luder Mahmud Sajid Ijaz Anwar James Okwera Julie Staals Elizabeth A. Warburton Kari Saastamoinen Timothy J. England Janet Putterill

<h3>Objective:</h3> In an international collaborative multicenter pooled analysis, we compared mortality, functional outcome, intracerebral hemorrhage (ICH) volume, and hematoma expansion (HE) between non–vitamin K antagonist oral anticoagulation–related ICH (NOAC-ICH) vitamin antagonist–associated (VKA-ICH). <h3>Methods:</h3> We all-cause mortality within 90 days for NOAC-ICH VKA-ICH using a Cox proportional hazards model adjusted age; sex; baseline Glasgow Coma Scale score, location, log...

10.1212/wnl.0000000000003886 article EN cc-by Neurology 2017-04-06

To compare intracerebral hemorrhage (ICH) volume and clinical outcome of non-vitamin K oral anticoagulants (NOAC)-associated ICH to warfarin-associated ICH.In this multicenter cross-sectional observational study patients with anticoagulant-associated ICH, consecutive NOAC-ICH were compared those warfarin-ICH selected from a population 344 ICH. was measured by an observer blinded details. Outcome measures adjusted for confounding factors.We 11 52 warfarin-ICH. The median 2.4 mL (interquartile...

10.1212/wnl.0000000000002310 article EN Neurology 2015-12-31

Background and Purpose: Due to practical advantages, increasing trial safety data, recent Australian Guideline endorsement local population needs we switched tenecteplase for stroke thrombolysis from alteplase. We describe our change process real-world outcome data. Methods: Mixed-methods including stakeholder engagement, preimplementation postimplementation surveys, assessment of patient treatment rates, metrics, clinical outcomes adjusting regression analyses age, sex, National Institutes...

10.1161/strokeaha.121.035931 article EN Stroke 2021-09-01

Background: There is limited data on ultra-early hematoma growth dynamics and its clinical relevance in primary intracerebral hemorrhage (ICH). We aimed to estimate the incidence of expansion (HE) within hyperacute period ICH, describe over time, investigate associations between HE outcomes after assess effect tranexamic acid HE. Methods: performed a planned secondary analysis STOP-MSU international multicenter randomized controlled trial. Repeat CT imaging ~1 hour treatment commencement was...

10.1161/strokeaha.124.050131 article EN Stroke 2025-01-30

Background and Purpose: The causes of recurrent ischemic stroke despite anticoagulation for atrial fibrillation are uncertain but might include small vessel occlusion. We investigated whether magnetic resonance imaging markers cerebral disease (SVD) associated with risk during follow-up in patients anticoagulated after recent or transient attack. Methods: analyzed data from a prospective multicenter inception cohort study attack (CROMIS-2 [Clinical Relevance Microbleeds Stroke Study]). rated...

10.1161/strokeaha.120.029474 article EN Stroke 2020-12-07

Although the association between cerebral amyloid angiopathy (CAA) and cognitive impairment is increasingly recognized, it not clear whether this because of impact recurrent intracerebral hemorrhage (ICH) events, disruptions caused by small vessel damage, or both. We investigated considering before ICH was associated with neuroimaging features CAA on magnetic resonance imaging.We studied 166 patients neuroimaging-confirmed recruited to a prospective multicentre observational study....

10.1161/strokeaha.117.019409 article EN cc-by Stroke 2017-12-15

The New Zealand (NZ) Central Region Stroke Network, serving 1.17 million catchment population, changed to tenecteplase for stroke thrombolysis in 2020 but was forced revert Alteplase 2021 due a sudden cessation of drug supply. We used this unique opportunity assess potential before and after temporal trend confounding.In NZ all reperfused patients are entered prospectively into national database safety monitoring. assessed patient outcomes treatment metrics over three time periods: alteplase...

10.1177/23969873231187436 article EN cc-by European Stroke Journal 2023-07-25

Stroke is the second leading cause of death worldwide, with highest mortality rates in low- to middle-income countries, particularly sub-Saharan Africa. We aimed investigate predictors 30-day among patients stroke admitted at a tertiary teaching hospital Northwestern Tanzania.This cohort study recruited World Health Organization's clinical definition stroke. Data were collected on baseline characteristics, degree neurological impairment admission (measured using National Institutes Scale),...

10.3389/fneur.2022.1100477 article EN cc-by Frontiers in Neurology 2023-01-18
Jonathan G. Best Carmen Barbato Gareth Ambler Houwei Du Gargi Banerjee and 95 more Duncan Wilson Clare Shakeshaft Hannah Cohen Tarek Yousry Rustam Al‐Shahi Salman Gregory Y.H. Lip Henry Houlden Martin M. Brown Keith W. Muir Hans Rolf Jäger David J. Werring P. Adrian Chris Patterson Christopher Price Abduelbaset Elmarimi Anthea Parry Arumug Nallasivam Azlisham Mohd Nor Bernard Esis Fábio A. Nascimento David Bruce Biju Bhaskaran Christine Roffe Claire Cullen Clare Holmes David Cohen Claire Cullen Claire Cullen Claire Cullen Claire Cullen Claire Cullen Claire Cullen Claire Cullen Claire Cullen Claire Cullen Claire Cullen Claire Cullen Claire Cullen David Hargroves David Mangion Dinesh Chadha Djamil Vahidassr Dulka Manawadu Elio Giallombardo Elizabeth A. Warburton Enrico Flossman Gunaratam Gunathilagan Harald Proschel Hedley Emsley Ijaz Anwar Ilse Burger James Okwera Janet Putterill Janice O’Connell John Bamford John Corrigan Jon Scott Jonathan Birns Karen Kee Kari Saastamoinen Kath Pasco Krishna Dani Lakshmanan Sekaran Lillian Choy Liz Iveson Maam Mamun Mahmud Sajid Martin Cooper Matthew B. Burn Matthew Smith Mick Power Michelle Davis Nigel Smyth Roland Veltkamp Pankaj Sharma Paul Guyler Paul O’Mahony Peter Wilkinson Prabel Datta Prasanna Aghoram Rachel Marsh Robert Luder Sanjeevikumar Meenakishundaram Santhosh Subramonian Simon Leach Sissi Ispoglou Sreeman Andole Timothy J. England Aravindakshan Manoj Frances Harrington Habiba Rehman Jane Sword Julie Staals Karim Mahawish Kirsty Harkness

To investigate whether enlarged perivascular spaces (PVS) within the basal ganglia or deep cerebral white matter are risk factors for intracranial hemorrhage in patients taking oral anticoagulants (OACs), independent of established clinical and radiologic factors, we conducted a post hoc analysis Clinical Relevance Microbleeds Stroke (CROMIS-2) (atrial fibrillation [AF]), prospective inception cohort study.Patients with atrial recent TIA ischemic stroke underwent standardized MRI prior to...

10.1212/wnl.0000000000010788 article EN cc-by Neurology 2020-09-16

Introduction: Hematoma expansion (HE) is strongly associated with mortality and disability in intracerebral hemorrhage (ICH). While it accepted that the majority of this occurs early after onset, there limited data on HE associations outcome ultra-early time window (within 3 hours symptom onset). We aimed to (a) estimate incidence within period ICH, (b) describe hematoma growth dynamics over time, (c) investigate between clinical outcomes ICH. Methods: performed a planned secondary analysis...

10.1161/str.56.suppl_1.tmp64 article EN Stroke 2025-01-30

Background The most frequent electrolyte derangement in adults with stroke is hyponatremia, which associated increased morbidity, mortality, and prolonged hospital stay. study aimed to investigate the hyponatremia incidence 30-day outcomes among admitted at a large tertiary teaching Northwestern Tanzania. Methods This cohort recruited presenting first-ever (as defined by World Health Organization) between November 2023 May 2024. Data were collected on demographics, degree of neurological...

10.3389/fstro.2025.1546358 article EN cc-by Frontiers in Stroke 2025-03-21

Background: Atrial fibrillation (AF) increases ischaemic stroke (IS) risk, which can be mitigated using risk prediction models to guide anticoagulation decisions. This resultant widespread use of anticoagulants has reduced IS rates globally. However, commonly used scores were validated in mainly European cohorts. Cardiology society guidelines recommend the local refinement such improve prediction. study aims: 1. To determine trends prevalence AF associated Auckland. 2. perform a validation...

10.1159/000546212 article EN cc-by-nc Neuroepidemiology 2025-05-05

We present the case of a 55-year-old Caucasian man presenting with polyarthritis, weight loss and multiple tender cutaneous nodules. Abnormal liver function tests prompted imaging which demonstrated metastases. Biopsy lesions confirmed diagnosis metastatic pancreatic neuroendocrine carcinoma.

10.1136/bcr-2014-204290 article EN BMJ Case Reports 2014-08-22

Background It is likely that a proportion of poststroke cognitive impairment sometimes attributable to unidentified prestroke decline; function also clinically relevant because it associated with poor functional outcomes, including death. We investigated the radiological and prognostic associations preexisting in patients ischemic stroke or transient attack atrial fibrillation. Methods Results included 1102 from prospective multicenter observational CROMIS ‐2 (Clinical Relevance Microbleeds...

10.1161/jaha.119.014537 article EN cc-by-nc-nd Journal of the American Heart Association 2020-01-04

Rationale Haematoma growth is common early after intracerebral haemorrhage (ICH), and a key determinant of outcome. Tranexamic acid, widely available antifibrinolytic agent with an excellent safety profile, may reduce haematoma growth. Methods design Stopping tranexamic acid for hyperacute onset presentation including mobile stroke units (STOP-MSU) phase II double-blind, randomised, placebo-controlled, multicentre, international investigator-led clinical trial, conducted within the estimand...

10.1136/svn-2021-001070 article EN cc-by-nc Stroke and Vascular Neurology 2021-11-30
Valery L. Feigin Rita Krishnamurthi Oleg N. Medvedev Alexander Merkin Balakrishnan Nair and 95 more Michael Kravchenko Shabnam Jalili-Moghaddam Suzanne Barker‐Collo Yogini Ratnasabapathy Luke C Skinner Mayowa Owolabi Bo Norrving Perminder S. Sachdev Bruce Arroll Michael Brainin Amanda G. Thrift Graeme J. Hankey Foad Abd-Allah Rufus Akinyemi Reza Azarpazhooh Anjali Bhatia Philip M. Bath Carol Brayne Hrvoje Budinčević Nicholas Child Kamil Chwojnicki Manuel Correia Alan Davis Gerry Devlin Vida Demarin Rajinder K. Dhamija Ding Ding Клара Докова Makarena Dudley Jesse Dyer Misty Edmonds Marcela Ely Mehdi Farhoudi Svetlana Feigin C Fornolles Aznida Firzah Abdul Aziz Denis Gabriel Seana Gall Artyom Gil E. V. Gnedovskaya Ann George Michal Haršány Matire Harwood Argye E. Hillis Zeng‐Guang Hou Kevin O. Hwang Norlinah Mohamed Ibrahim Tania Ka‘ai Nidhi Kalra Judith Katzenellenbogen Law Zhe Kang Arindam Kar Bartosz Karaszewski Vitalij Kazin Miia Kivipelto Saltanat Kamenova A. Kondybaeva Pablo M Lavados Tsong‐Hai Lee Liping Liu Karim Mahawish Michał Maluchnik Sheila Martins Farrah J. Mateen Nahal Mavaddat Man Mohan Mehndiratta Robert Mikulík Angela Oliver Şerefnur Öztürk Nikhil Patel М. А. Пирадов B Prakash Tara Purvis Ulf‐Dietrich Reips Kev Roos Jonathan Rosand Ramesh Sahathevan Lakshmanan Sekaran N. А. Shamalov Deidre Anne De Silva Vinod Kumar Singh Alina Solomon M.V. Padma Srivastava Nijasri C. Suwanwela Denise Taylor Thomas Truelsen Narayanaswamy Venketasubramanian Ekaterina Volevach Ondřej Volný Joyce Wan Katila Withanapathirana Tamara Welte David O. Wiebers Andrea Sylvia Winkler Tissa Wijeratne

Background: Most strokes and cardiovascular diseases (CVDs) are potentially preventable if their risk factors identified well controlled. Digital platforms, such as the PreventS-MD web app (PreventS-MD) may aid health care professionals (HCPs) in assessing managing promoting lifestyle changes for patients. Methods: This is a mixed-methods cross-sectional two-phase survey using largely positivist (quantitative qualitative) framework. During Phase 1, prototype of was tested internationally by...

10.1177/17474930231190745 article EN International Journal of Stroke 2023-07-24

To investigate the efficacy of problem solving therapy for reducing emotional distress experienced by younger stroke survivors.A non-randomized waitlist controlled design was used to compare outcome measures treatment group and a control at baseline post-waitlist/post-therapy. After received an analysis completed on pooled baseline, post-treatment, three-month follow-up.Changes between post-treatment (n = 13) were not significantly different two groups, 13), 16) (between-subject design). The...

10.1080/09638288.2017.1408707 article EN Disability and Rehabilitation 2017-11-26

Cerebral infarction is a rare but recognised complication of idiopathic thrombocytopenic purpura. With traditional therapies including antiplatelets precluded in such patients and little guidance the literature, optimal treatment strategy unknown. This report describes case ischaemic stroke patient with purpura deteriorating neurology. A successful outcome was made possible using sequential approach initially improving platelet levels steroids intravenous immunoglobulin then commencing...

10.1136/bcr.04.2009.1748 article EN BMJ Case Reports 2009-06-04

Background: Stroke is a second leading cause of death globally, with an estimated one in four adults suffering stroke their lifetime. We aimed to describe the clinical characteristics, quality care, and outcomes urban Northwestern Tanzania. Methods: analyzed de-identified data from prospective registry Bugando Medical Centre Mwanza, largest city Tanzania, between March 2020 October 2022. This included all ⩾18 years admitted our hospital who met World Health Organization definition stroke....

10.1177/17474930231219584 article EN International Journal of Stroke 2023-11-30

We present a case of 74-year-old man who was admitted to our stroke unit with symptoms and signs suggestive left total anterior circulation stroke. Subsequent MRI failed support this diagnosis and, furthermore, correction an incidental finding hyponatraemia due syndrome inappropriate antidiuretic hormone secretion led complete recovery symptoms. Investigation subsequent exclusion other potential differential diagnoses confirmed the mimicking acute

10.1136/bcr-2014-207397 article EN BMJ Case Reports 2015-01-23

A 58-year-old woman with a history of poorly controlled type 2 diabetes, hypertension and smoking presented left hemiparesis (grade 4/5). Admission glucose was 22.6 mmol/L. MRI the brain demonstrated an area restricted diffusion involving corpus callosum hemisphere (figures 1 2). Investigations into cause her stroke including vasculitic thrombophilic causes, echocardiogram, telemetry carotid Doppler, did not demonstrate any significant pathology. Rather alarmingly, patient's glycated...

10.1136/bcr-2016-216071 article EN BMJ Case Reports 2016-06-15

We present a case of paraneoplastic limbic encephalitis, describing the presenting features, diagnosis and management plan. Limbic encephalitis is one differential rapidly progressive dementia. describe rational approach to patient with rapid cognitive decline.

10.1136/bcr-2014-204591 article EN BMJ Case Reports 2014-06-02

Stroke mimics account for up to one-third of acute stroke admissions and are a heterogeneous entity which pose diagnostic challenges. Diagnosing such patients is however crucial avoid delays in treatment potentially harmful medication prescription. We aimed at describing the magnitude, clinical characteristics short-term outcomes clinically diagnosed with stroke.This prospective study enrolled admitted World Health Organization criteria tertiary hospital Tanzania. Baseline data was collected...

10.1186/s12883-020-01853-7 article EN cc-by BMC Neurology 2020-07-07
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