Retinal Vascular Signs As Risk Markers For Incident Stroke Or Cerebrovascular Death: A Population-based Assessment
Funder
National Health and Medical Research Council
Funding Amount
$410,199.00
Summary
Stroke remains a major cause of disability and death in Australia. Preliminary data from the Blue Mountains Eye Study suggest that blood vessel changes observed in the retina at the back of the eye may provide signs of an increased risk of stroke or death from stroke. Importantly, although stroke is strongly associated with elevated blood pressure, the risk associated with these blood vessel signs seems to be independent of blood pressure. The proposed study will conduct a detailed re-grading of ....Stroke remains a major cause of disability and death in Australia. Preliminary data from the Blue Mountains Eye Study suggest that blood vessel changes observed in the retina at the back of the eye may provide signs of an increased risk of stroke or death from stroke. Importantly, although stroke is strongly associated with elevated blood pressure, the risk associated with these blood vessel signs seems to be independent of blood pressure. The proposed study will conduct a detailed re-grading of retinal photographs taken on people who attended the Eye Study during 1992-4 and 5-year follow-up exams during 1997-9. We will grade these photographs manually (using a stereo-viewer), and with computer assistance to measure changes in the diameter of small arteries in the retina and other signs. By closely matching our grading technique to that used in a large American Study, we hope to develop reliable grading for these signs and will be able to compare our findings internationally. Our aim is to assess the frequency of abnormal retinal vessel changes in people of different age groups as well as the development and progression of these signs over time. Their relationship to well known vascular risk factors like smoking, blood pressure, obesity, diabetes and cholesterol will also be investigated. We hope to be able to discriminate those changes associated with an increased stroke risk from those due to normal ageing. We expect that the increased stroke risk associated with abnormal retinal vessel changes may be greater than shown in our early data. If confirmed, then these findings may provide a more sensitive and objective measure of stroke risk than relying on traditional risk factors, which are difficult to quantify and change with time. We may be able to develop simple rules so that doctors using an ophthalmoscope or examining a retinal photograph could identify high risk patients. These people could benefit from interventions to reduce their risk.Read moreRead less
Cerebral Palsy In Victoria: A Population-based Study
Funder
National Health and Medical Research Council
Funding Amount
$107,990.00
Summary
This research project is broad in its exploration of cerebral palsy in Victoria. It will contribute to the global pool of knowledge by addressing a number of unanswered questions, such as whether the overall rates of cerebral palsy are changing over time, an important indicator of the effect of changes in medical management strategies for pregnancy and newborns. Recognition of patterns of brain abnormalities and other risk factors play an important role in the identification of causal pathways.
An Investigation Of The Role Of The Pre-frontal Cortex In Cognitive Ageing And Dementia
Funder
National Health and Medical Research Council
Funding Amount
$291,629.00
Summary
This project will investigate the role of the pre-frontal cortex in cognitive ageing and dementia. New neuroimaging techniques will be used to precisely measure this cerebral structure in a large ageing cohort The new brain measures will be used to identify risk and protective factors of cognitive ageing and dementia. This project is highly significant because it will contribute to the identification of at risk individuals and guide future intervention and clinical studies.
Hospital Admission, Cerebral Palsy, Intellectual Disability And Birth Defects In Assisted Conception Infants.
Funder
National Health and Medical Research Council
Funding Amount
$115,110.00
Summary
We have recently completed a study examining the prevalence of birth defects in assisted conception infants born in Western Australia from 1993-1997. Contrary to reassuring claims by other researchers in this area, we found that assisted conception infants have a two-fold increased risk of being diagnosed with a major birth defect by one year of age. We now propose to examine other long-term health outcomes in these children. This study involves record linkage between the WA Reproductive Technol ....We have recently completed a study examining the prevalence of birth defects in assisted conception infants born in Western Australia from 1993-1997. Contrary to reassuring claims by other researchers in this area, we found that assisted conception infants have a two-fold increased risk of being diagnosed with a major birth defect by one year of age. We now propose to examine other long-term health outcomes in these children. This study involves record linkage between the WA Reproductive Technology Register and four other population-based databases. The prevalence of cerebral palsy, intellectual disability, hospital admission and birth defects in assisted conception children born in WA between 1993 and 2001 will be compared to that seen in all other Western Australian children born over the same time period. The collection of information on risks associated with assisted conception treatment is vital to allow adequate counselling of couples considering fertility treatment. Cerebral palsy, intellectual disability, birth defects and hospital admission are all serious adverse health outcomes and, despite the introduction of IVF to most Western countries twenty years ago, there are limited data in the literature concerning the occurrence of these conditions in assisted conception infants. Quantifying the contribution of assisted conception treatment to neonatal, infant and childhood morbidity and mortality is also important for the planning of health service provision. Although assisted conception births represent only a small proportion of total births in Australia, these infants may require a disproportionate level of health care services, such as neonatal intensive care treatment due to complications associated with preterm or multiple birth. The wide application of assisted conception treatment in Australia and the increased number of pregnancies achieved by these means reinforce the urgent need for valid data on the health of children born after these procedures.Read moreRead less
10-year Outcome After Stroke: Final Follow-up For Survival, Stroke Recurrence, Functional Ability And Costs
Funder
National Health and Medical Research Council
Funding Amount
$51,475.00
Summary
Stroke is common, occurring in approximately 50,000 Australians each year. About a third of people with stroke die within the first 12 months but we do not know how many survive or how well they manage in the longer term. We aim to interview 10-year survivors of stroke to assess how much help they need to undertake everyday activities, and how much the stroke is costing the Australian community. This information will help us in planning the health care needs for stroke patients in future years.
LONG TERM FUNCTIONAL ABILITY AND COSTS OF STROKE SUBTYPES.
Funder
National Health and Medical Research Council
Funding Amount
$270,604.00
Summary
Stroke is the third most common cause of death in Australia, and is more common in the older age groups. Because the population most at risk of developing stroke is growing faster than the rest of the population, it is likely that there will be a large increase in the number of strokes occurring in coming years. At 1 year after stroke about one-third of patients have died, a third remain severely disabled and a third recover with minimal disability. In Australia, there is little information on o ....Stroke is the third most common cause of death in Australia, and is more common in the older age groups. Because the population most at risk of developing stroke is growing faster than the rest of the population, it is likely that there will be a large increase in the number of strokes occurring in coming years. At 1 year after stroke about one-third of patients have died, a third remain severely disabled and a third recover with minimal disability. In Australia, there is little information on outcome beyond 1 year. It is thought that at 5 years after stroke about 55% of patients will die, and a further 10% will have another nonfatal stroke. Stroke is estimated to cost the community in excess of $1 billion a year. Little is known about the long-term costs of stroke to survivors and their relatives. These costs are likely to be substantial, and are likely to include costs related to hospitalisations, outpatient visits, general practitioner visits, medications, aids and community services. It is also likely that substantial informal care is provided by relatives and friends (e.g. assistance with shopping and personal care). The aim of this study is to assess the long-term outcome of patients with stroke. These will include measures of survival, stroke recurrence, and ability to perform usual daily activities. In addition, we aim to determine the long-term use of health care and community resources and the costs incurred by patients, their carers, and the community. Information on survival patterns, stroke recurrence and disability will provide information of great value for health service planning. Such information will also be useful to patients, their families, and medical staff who treat these patients. Information on the costs of stroke will provide the only information about the patterns of long-term health care and community resource use among stroke patients in Australia. This information will be useful for health service planning.Read moreRead less