Publications by authors named "Butt W"

Nitric oxide (NO) was proclaimed the 1992 "molecule of the year" by Culotta in Science magazine because of its importance in neuroscience, physiology and immunology. Inhaled NO has been in clinical use for over 35 years to decrease pulmonary hypertension and improve oxygenation. Over the last 20 years there has been much research to understand the role of nitric oxide on cell surface receptors, mitochondria, and intracellular processes which involve calcium and superoxide radicals.

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Objectives: To determine if a priori standardization of outcome hemostatic definitions alone was adequate to enable useful comparison between two cohorts of pediatric extracorporeal membrane oxygenation (ECMO) patients, managed according to local practice and protocol.

Design: Comparison of two separate prospective cohort studies performed at different centers with standardized outcome definitions agreed upon a priori.

Setting: General and cardiac PICUs at the Royal Children's Hospital (RCH) in Melbourne, Australia, and the Sophia Children's Hospital (SCH) in Rotterdam, The Netherlands.

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Objectives: Pediatric sepsis results in significant morbidity and mortality worldwide. There is an urgent need to investigate adjunctive therapies that can be administered early. We hypothesize that using vitamin C combined with hydrocortisone increases survival free of inotropes/vasopressors support until day 7 compared with standard care.

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Paediatric critical care units are designed for children at a vulnerable stage of development, yet the evidence base for practice and policy in paediatric critical care remains scarce. In this Health Policy, we present a roadmap providing strategic guidance for international paediatric critical care trials. We convened a multidisciplinary group of 32 paediatric critical care experts from six continents representing paediatric critical care research networks and groups.

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Background: The effect of temporary blood flow arrest during endovascular thrombectomy for acute ischemic stroke is uncertain due to the lack of evidence from randomized controlled trials. We aimed to investigate whether temporary blood flow arrest during endovascular thrombectomy using a balloon guide catheter improves intracranial vessel recanalization compared with nonflow arrest.

Methods: The ProFATE trial (Proximal Blood Flow Arrest During Endovascular Thrombectomy) was a multicenter, randomized, participant- and outcome-blinded trial at 4 thrombectomy centers in the United Kingdom.

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Objective: This study aimed to determine if a history of tinnitus is associated with the risk of developing dementia.

Method: A nationwide population-based case-control study including all eligible adults in Taiwan.

Results: A total of 15 686 patients were included in the study, with 7843 individuals making up each of the case and control groups.

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Background: The efficacy and safety of endovascular thrombectomy (EVT) beyond 6 hours from stroke onset for patients with large vessel occlusion (LVO) selected without CT perfusion(CTP) or MR imaging(MRI) is undetermined. We conducted a systematic review and meta-analysis of the current literature comparing outcomes for late presenting patients with LVO treated by best medical management (BMM) with those selected for EVT based only on non-contrast CT(NCCT)/CT angiography(CTA) (without CTP or MRI).

Methods: PRISMA guidelines were employed.

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Objective: To characterize surface-bound proteins and to measure the thickness of fibrin fibers bound to extracorporeal membrane oxygenation (ECMO) circuits used in children.

Design: Single-center observational prospective study, April to November 2021.

Setting: PICU, Royal Children's Hospital, Melbourne, Australia.

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Aim: To determine the attitudes and responses of Victorian paediatric intensive care doctors to the detection and reporting of child maltreatment.

Methods: A prospective study conducted in a 30-bed paediatric intensive care unit of a university teaching hospital using data collected from a questionnaire completed by paediatric intensive care consultants and registrars. The questionnaire covered the following domains - doctors' knowledge of Victorian mandatory reporting legislation, doctors' history of reporting and doctors' current role in the detection and reporting of child maltreatment.

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Background: Extracorporeal membrane oxygenation (ECMO) is used in critically ill children with cardiac and/or respiratory failure. Use is increasing in children with high-risk comorbidities. Reasons children do not survive ECMO are poorly described.

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Background: Patient and procedure factors are considered in the decision-making process for surgical repair of hiatal hernias. Recurrence is multi-factorial and has been shown to be related to size, type, BMI and age.

Aims: This study examined recurrence rates in a single institution, identified areas for improved surgical technique, and re-assessed recurrence following implantation of a quality improvement initiative.

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The continuous contact between blood and the foreign surface of the extracorporeal membrane oxygenation (ECMO) circuit contributes to hemostatic, inflammatory, and other physiological disturbances observed during ECMO. Although previous studies have extensively investigated blood samples from patients on ECMO, cell adsorption to the ECMO circuit as an additional factor that could potentially influence clinical outcomes, has largely been overlooked. Here we provide a detailed immunofluorescence (IF) protocol designed to characterize cellular binding on ECMO circuits collected from patients.

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Article Synopsis
  • Neurological issues are prevalent in children hospitalized with SARS-CoV-2-related multisystem inflammatory syndrome (MIS-C), potentially leading to lasting cognitive and functional problems.
  • This study investigates how severe neurological symptoms during hospitalization relate to new cognitive and functional impairments upon discharge among children under 18.
  • Over 3,500 patients were examined, revealing that those with severe neurological manifestations had a higher likelihood of experiencing new morbidities at discharge compared to those without such issues.
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Context: Medical devices fall under the broad topic encompass everything from basic hardware to integrated software systems. The integration of software into hardware devices is not simple due to requirements of regional regulatory bodies. Therefore, medical businesses need to oversee not only the creation of devices but also the observance of guidelines and standards established by regulatory bodies.

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Background: The Woven EndoBridge (WEB) device (MicroVention, Tustin, CA, USA) has an excellent safety profile. While major complications such as device malposition and migration are rare, they can have serious consequences if not addressed promptly. Our case series describes the safety and efficacy of Amplatz goose neck microsnare device (Medtronic in Irvine, CA, USA) in endovascular retrieval of a detached WEB device.

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Nitric oxide (NO) can be safely delivered through the sweep gas to the oxygenator of an extracorporeal membrane oxygenation (ECMO) circuit. It has theoretical benefits such as preventing platelet adhesion to surfaces, mitigating inflammatory response and protection against ischemia-reperfusion injury. In this uncontrolled before-after study of children on ECMO, the outcomes of those who received NO were compared with those who did not.

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Background And Purpose: The Woven EndoBridge (WEB) system has established itself as a safe and effective option for managing wide-neck bifurcation aneurysms. Addressing aneurysms with a greater height than width using conventional WEB-sizing methods has proved ineffective due to the inherent configuration of the devices. To overcome this limitation, we propose an intuitive approach that involves swapping the width and height dimensions of the aneurysm to determine the appropriate WEB size.

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Background: Half of patients who achieve successful recanalization following endovascular thrombectomy (EVT) for acute ischemic stroke experience poor functional outcome. We aim to investigate whether the use of adjunctive intra-arterial antithrombotic therapy (AAT) during EVT is safe and efficacious compared with standard therapy (ST) of EVT with or without prior intravenous thrombolysis.

Methods: Electronic databases were searched (PubMed/MEDLINE, Embase, Cochrane Library) from 2010 until October 2023.

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Background: Extracorporeal membrane oxygenation (ECMO) is used in children with cardiopulmonary failure. While the majority of ECMO centers use unfractionated heparin, other anticoagulants, including factor XI and factor XII inhibitors are emerging, which may prove suitable for ECMO patients. However, before these anticoagulants can be applied in these patients, baseline data of FXI and FXII changes need to be acquired.

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To investigate the precision of weight measurements in critically ill infants in a paediatric intensive care unit (PICU). Prospective cohort study. Royal Children's Hospital PICU.

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The NITric oxide during cardiopulmonary bypass (CPB) to improve Recovery in Infants with Congenital heart defects (NITRIC) trial, a 1320-patient, multicentre, randomised controlled trial, is aiming to improve survival free of ventilation after CPB by using nitric oxide delivered into the oxygenator of the CPB. To provide a statistical analysis plan before completion of patient recruitment and data monitoring. Final analyses for this study will adhere to this statistical analysis plan, which details all key pre-planned analyses.

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