Lung Injury Following Resuscitation In Immature Lambs
Funder
National Health and Medical Research Council
Funding Amount
$227,036.00
Summary
The primary aim of this project is to identify techniques for resuscitating premature babies that cause little or no damage to their lungs. We also want to identify factors that enhance the clearance of liquid from the lungs so air can easily enter to deliver oxygen and remove carbon dioxide at birth. About 1% of babies are born very prematurely and many develop respiratory distress syndrome (RDS). This is the major cause of illness and death in infants born at less than 32 weeks' gestation. Mos ....The primary aim of this project is to identify techniques for resuscitating premature babies that cause little or no damage to their lungs. We also want to identify factors that enhance the clearance of liquid from the lungs so air can easily enter to deliver oxygen and remove carbon dioxide at birth. About 1% of babies are born very prematurely and many develop respiratory distress syndrome (RDS). This is the major cause of illness and death in infants born at less than 32 weeks' gestation. Most of the survivors required assisted ventilation during their first weeks of life. In 1995, 2381 premature infants were ventilated in Australia and New Zealand, requiring 36,407 days of ventilator care. Thus, this is a serious condition with a high financial and social cost. It is known that RDS is caused by damage to the very immature lung which starts an inflammatory reaction. We don't know what triggers the damage and inflammation but believe that the way babies are resuscitated may damage the lungs. Currently, babies are resuscitated with a resuscitation bag squeezed by hand, with 100% oxygen. There is no pressure to stop the lungs collapsing during expiration. As the volume of gas delivered with each breath is not measured, it is possible that the volumes are too large and damage the lungs. This project will investigate whether less damage occurs to the lungs of preterm lambs when resuscitation uses a modern neonatal ventilator where each inflation is limited to a known volume. A small distending pressure will be used to stop the lungs collapsing during expiration. We will also investigate factors that enhance the clearance of liquid from the lungs after the initiation of breathing. The failure to clear lung liquid greatly limits the ability of babies to breathe and exposes those parts of the lung that are cleared to a much greater risk of injury. The results of this study will be directly applicable to the treatment and care of prematurely born babies.Read moreRead less
Characterization Of Cellular Inflammatory Responses Underlying Acute Viral Bronchiolitis In Infants
Funder
National Health and Medical Research Council
Funding Amount
$583,224.00
Summary
This project seeks to characterize the inflammatory mechanisms triggered during severe respiratory virus infections that result in hospitalization of infants. These are associated with later development of asthma. We aim to identify new molecular targets for anti-inflammatory drug development, with the long term goals of improving treatment for acute disease, and prevention of subsequent asthma.
Towards Improved Respiratory Outcomes In Preterm Infants Through Rapid And Effective Aerosalisation Of Medication To The Lung
Funder
National Health and Medical Research Council
Funding Amount
$318,768.00
Summary
Babies born premature are greatest at risk from increasingly common respiratory illnesses. It is possible that delivering a medication by aerosol will be the most effective method of treatment. For premature babies that need breathing support, inhaled medication could improve care. For highly infectious respiratory illnesses such as RSV, with no vaccines available, we need to protect babies very early in life. I will use an established lamb model to test fast medication delivery to the lungs.
The Role Of Emerging Gastrointestinal Viruses In The First Two Years Of Life: A Birth Cohort Study
Funder
National Health and Medical Research Council
Funding Amount
$392,534.00
Summary
Gastro illnesses are common and potentially serious early in life. We are aiming to find out more about these illnesses by following ~140 children from birth to their second birthday, with parents collecting a dirty nappy swab every week. Our laboratory will test these samples for a wide range of known and new gastro viruses, and we will also be looking for, as yet, undiscovered viruses. This information will allow us to document the burden of these illnesses in young children and their families ....Gastro illnesses are common and potentially serious early in life. We are aiming to find out more about these illnesses by following ~140 children from birth to their second birthday, with parents collecting a dirty nappy swab every week. Our laboratory will test these samples for a wide range of known and new gastro viruses, and we will also be looking for, as yet, undiscovered viruses. This information will allow us to document the burden of these illnesses in young children and their families.Read moreRead less