10 results on '"Mackay, Mark"'
Search Results
2. Distinct manifestations and potential mechanisms of seizures due to cortical versus white matter injury in children
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Cooper, Monica S., Mackay, Mark T., Shepherd, Daisy A., Dagia, Charuta, Fahey, Michael C., Reddihough, Dinah, Reid, Susan M., and Harvey, A. Simon
- Published
- 2024
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- View/download PDF
3. Building health service management workforce capacity in the era of health informatics and digital health – A scoping review
- Author
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Brommeyer, Mark, Whittaker, Maxine, Mackay, Mark, Ng, Fowie, and Liang, Zhanming
- Published
- 2023
- Full Text
- View/download PDF
4. A framework for developing generalisable discrete event simulation models of hospital emergency departments
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Boyle, Laura M., Marshall, Adele H., and Mackay, Mark
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- 2022
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5. Prednisolone or tetracosactide depot for infantile epileptic spasms syndrome? A prospective analysis of data embedded within two randomised controlled trials.
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Osborne, John P., Edwards, Stuart W., Alber, Fabienne Dietrich, Hancock, Eleanor, Johnson, Anthony L., Kennedy, Colin R., Likeman, Marcus, Lux, Andrew L., Mackay, Mark, Mallick, Andrew, Newton, Richard W., Nolan, Melinda, Pressler, Ronit, Rating, Dietz, Schmitt, Bernhard, Verity, Christopher M., and O'Callaghan, FinbarJ.K.
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INFANTILE spasms ,EPILEPSY ,PREDNISOLONE ,DATA analysis ,SPASMS ,SYNDROMES - Abstract
To report a prospectively planned analysis of two randomised controlled trials with embedded comparisons of prednisolone versus tetracosactide depot for the treatment of infantile epileptic spasms syndrome (IESS). Individual patient data from patients randomly allocated to prednisolone or tetracosactide depot were analysed from two trials (UKISS, ICISS). The comparison was embedded within trials in which some patients also received vigabatrin but only patients receiving monotherapy with randomly allocated hormonal treatments are included in this analysis. The main outcome was cessation of spasms (Days 13–14 after randomisation). Lead time to treatment and underlying aetiology were taken into account. Cessation of spasms on Days 14–42 inclusive, electroclinical response (EEG Day 14), plus developmental and epilepsy outcomes (at 14 months in UKISS and 18 months in ICISS) are also reported. Minimum treatment was prednisolone 40 mg per day for two weeks or tetracosactide depot 0·5 mg IM on alternate days for two weeks, all followed by a reducing dose of prednisolone over two weeks. 126 infants were included in this study. On tetracosactide depot, 47 of 62 (76%) were free of spasms on Days 13–14 compared to 43 of 64 (67%) on prednisolone (difference 9%, 95% CI -7·2% to +25·2%, chi square 1·15, p = 0·28). For Day 14–42 cessation of spasms, on tetracosactide depot, 41 of 61 (67%) were free of spasms compared to 35 of 62 (56%) on prednisolone (difference 11%, 95% CI -6·4% to +28·4%, chi square 1·51, p = 0·22). There was no significant difference in mean VABS score between infants who received prednisolone compared with those who received tetracosactide depot (74·8 (SD 18·3) versus 78·0 (SD 20·2) t = −0·91 p = 0·36). The proportion with ongoing epilepsy at the time of developmental assessment was 20 of 61 (33%) in the tetracosactide group compared with 26 out of 63 (41%) in the prednisolone group (difference 8%, 95% CI -9·2% to +25·2%, Chi [2] 0·95, p = 0·33). With hormone monotherapy, either prednisolone or tetracosactide depot may be recommended for infantile epileptic spasms syndrome. • Embedding a second randomisation in trials effectively provides additional information about trial treatments. • There was no significant difference between prednisolone and tetracosactide depot in those achieving early spasm cessation. • There was no significant difference between trial treatments in those free of epileptic seizures at 14 and 18 months. • Developmental outcome was similar in both treatment groups. • Either prednisolone or tetracosactide depot can be recommended when using hormonal treatment as monotherapy. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. Neuroimaging in Pediatric Stroke.
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Jiang, Bin, Mackay, Mark T., Stence, Nicholas, Domi, Trish, Dlamini, Nomazulu, Lo, Warren, and Wintermark, Max
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Pediatric stroke is unfortunately not a rare condition. It is associated with severe disability and mortality because of the complexity of potential clinical manifestations, and the resulting delay in seeking care and in diagnosis. Neuroimaging plays an important role in the multidisciplinary response for pediatric stroke patients. The rapid development of adult endovascular thrombectomy has created a new momentum in health professionals caring for pediatric stroke patients. Neuroimaging is critical to make decisions of identifying appropriate candidates for thrombectomy. This review article will review current neuroimaging techniques, imaging work-up strategies and special considerations in pediatric stroke. For resources limited areas, recommendation of substitute imaging approaches will be provided. Finally, promising new techniques and hypothesis-driven research protocols will be discussed. [ABSTRACT FROM AUTHOR]
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- 2022
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7. Long-term outcomes of warfarin versus aspirin after Fontan surgery.
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Attard, Chantal, Monagle, Paul T., d'Udekem, Yves, Mackay, Mark T., Briody, Julie, Cordina, Rachael, Hassan, Ebrahim Bani, Simm, Peter, Rice, Kathryn, and Ignjatovic, Vera
- Abstract
Because of the nature of the Fontan physiology, patients are at an increased risk of thromboembolic complications. As such, warfarin or aspirin is generally prescribed lifelong for thromboprophylaxis. This study aimed to compare long-term rates of cerebrovascular injury, thrombosis, bleeding, bone mineral density, and quality of life in people living with Fontan circulation receiving warfarin compared with aspirin. This was a multicenter study of a selected cohort from the Australia and New Zealand Fontan population. Participants underwent cerebral magnetic resonance imaging to detect the presence of cerebrovascular injury (n = 84) and dual-energy X-ray absorptiometry to assess bone mineral density (n = 120). Bleeding (n = 100) and quality of life (n = 90) were assessed using validated questionnaires: Warfarin and Aspirin Bleeding assessment tool and Pediatric Quality of Life Inventory, respectively. Stroke was detected in 33 participants (39%), with only 7 (6%) being clinically symptomatic. There was no association between stroke and Fontan type or thromboprophylaxis type. Microhemorrhage and white matter injury were detected in most participants (96% and 86%, respectively), regardless of thromboprophylaxis type. Bleeding rates were high in both groups; however, bleeding was more frequent in the warfarin group. Bone mineral density was reduced in our cohort compared with the general population; however, this was further attenuated in the warfarin group. Quality of life was similar between the warfarin and aspirin groups. Home international normalized ratio monitoring was associated with better quality of life scores in the warfarin group. Cerebrovascular injury is a frequent occurrence in the Australia and New Zealand Fontan population regardless of thromboprophylaxis type. No benefit of long-term warfarin prophylaxis could be demonstrated over aspirin; however, consideration must be given to important clinical features such as cardiac function and lung function. Furthermore, the association of reduced bone health in children receiving warfarin warrants further mechanistic studies. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2021
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8. Facial Function in Bell Palsy in a Cohort of Children Randomized to Prednisolone or Placebo 12 Months After Diagnosis.
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Babl, Franz E., Herd, David, Borland, Meredith L., Kochar, Amit, Lawton, Ben, Hort, Jason, West, Adam, George, Shane, Oakley, Ed, Wilson, Catherine L., Hopper, Sandy M., Cheek, John A., Hearps, Stephen, Mackay, Mark T., Dalziel, Stuart R., and Lee, Katherine J.
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BELL'S palsy , *FACIAL paralysis , *DIAGNOSIS , *PREDNISOLONE , *MOTOR neurons , *PLACEBOS - Abstract
Information on the medium-term recovery of children with Bell palsy or acute idiopathic lower motor neuron facial paralysis is limited. We followed up children aged 6 months to <18 years with Bell palsy for 12 months after completion of a randomized trial on the use of prednisolone. We assessed facial function using the clinician-administered House-Brackmann scale and the modified parent-administered House-Brackmann scale. One hundred eighty-seven children were randomized to prednisolone (n = 93) or placebo (n = 94). At six months, the proportion of patients who had recovered facial function based on the clinician-administered House-Brackmann scale was 98% (n = 78 of 80) in the prednisolone group and 93% (n = 76 of 82) in the placebo group. The proportion of patients who had recovered facial function based on the modified parent-administered House-Brackmann scale was 94% (n = 75 of 80) vs 89% (n = 72 of 81) at six months (OR 1.88; 95% CI 0.60, 5.86) and 96% (n = 75 of 78) vs 92% (n = 73 of 79) at 12 months (OR 3.12; 95% CI 0.61, 15.98). Although the vast majority had complete recovery of facial function at six months, there were some children without full recovery of facial function at 12 months, regardless of prednisolone use. [ABSTRACT FROM AUTHOR]
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- 2024
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9. A quantitative EEG index for the recognition of arterial ischemic stroke in children.
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Caffarelli, Mauro, Karukonda, Vishnu, Aghaeeaval, Mahsa, McQuillen, Patrick S., Numis, Adam L., Mackay, Mark T., Press, Craig A., Wintermark, Max, Fox, Christine K., and Amorim, Edilberto
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ISCHEMIC stroke , *STROKE , *NERVOUS system injuries , *ELECTROENCEPHALOGRAPHY , *CEREBRAL hemispheres - Abstract
• Diagnosis of stroke in children is delayed in patients who are sedated or unable to participate in the neurological exam. • EEG is a sensitive modality of neuromonitoring for the recognition of focal voltage attenuation associated with stroke. • The Correlate of Injury to the Nervous System (COIN) index provides a numerical trend and visualization of stroke territory. To describe and assess performance of the Correlate Of Injury to the Nervous system (COIN) index, a quantitative electroencephalography (EEG) metric designed to identify areas of cerebral dysfunction concerning for stroke. Case-control study comparing continuous EEG data from children with acute ischemic stroke to children without stroke, with or without encephalopathy. COIN is calculated continuously and compares EEG power between cerebral hemispheres. Stroke relative infarct volume (RIV) was calculated from quantitative neuroimaging analysis. Significance was determined using a two-sample t-test. Sensitivity, specificity, and accuracy were measured using logistic regression. Average COIN values were −34.7 in the stroke cohort compared to −9.5 in controls without encephalopathy (p = 0.003) and −10.5 in controls with encephalopathy (p = 0.006). The optimal COIN cutoff to discriminate stroke from controls was −15 in non-encephalopathic and −18 in encephalopathic controls with >92% accuracy in strokes with RIV > 5%. A COIN cutoff of −20 allowed discrimination between strokes with <5% and >5% RIV (p = 0.027). We demonstrate that COIN can identify children with acute ischemic stroke. COIN may be a valuable tool for stroke identification in children. Additional studies are needed to determine utility as a monitoring technique for children at risk for stroke. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
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10. Building health service management workforce capacity in the era of health informatics and digital health - A scoping review.
- Author
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Brommeyer, Mark, Whittaker, Maxine, Mackay, Mark, Ng, Fowie, and Liang, Zhanming
- Abstract
Introduction: Health informatics and digital health, two rapidly growing disciplines, are becoming increasingly important to the sustainability of health service provision, highlighted especially through the COVID-19 pandemic. To maximise the benefits of the adoption and growth of health informatics and digital health, health service managers play a critical role in leading and managing the implementation and transformation of the system, both strategically and operationally, whilst still needing to manage 'business as usual'.Objectives: The objectives of the paper are to present and discuss the findings from a scoping review identifying: 1) competencies required for health service managers leading the implementation and transformation of informatics and digital technology in the health sector; and 2) factors that are critical to building the management workforce capacity in the era of health informatics and digital health.Methods: A scoping review of the literature was conducted in 2020 focussing on identifying empirical articles published in the English language since the year 2000 using a number of keywords such as 'health informatics', 'digital health', 'electronic health', 'competencies', 'capability', 'proficiency', 'qualification', 'certification', 'health manager', 'health executive' and 'health administrator'. The literature search was guided by a PRISMA approach searching within eight databases: Scopus, ProQuest, Web of Science, ACM Digital Library, CINAHL, PubMed, Google Scholar and ProQuest Dissertations.Results: After duplicates were removed, 941 publications were included for title screening as the result of an initial review. Title screening selected 185 articles to be included for abstract screening by two reviewers confirming 19 papers relevant to the focus of the current paper which were included in data extraction and content analysis. The analysis identified the additional competency of 'information and data management' be included as a core competency for health service managers. The analysis also confirmed additional elements for the following four core management competencies that are important to health service managers working in the digital health context, including: 1) leadership; 2) operational and resource management; 3) personal, interpersonal and professional qualities, and 4) understanding the industry and environment. Factors that are critical to developing the system and organization capacity in the use of health informatics and digital health technology, and leading and managing the adoption in the healthcare organizations were identified in three categories: 1) policy/system; 2) organizational structure and processes; and 3) people factors.Conclusions: This paper has taken an important step in confirming the competency requirements for health services managers that are relevant to leading and managing in the health informatics and digital health space, consequently indicating the directions for developing a competent workforce in meeting the existing and emerging healthcare delivery challenges, both now and in the future. [ABSTRACT FROM AUTHOR]- Published
- 2022
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