Publications by authors named "Mandy McDonald"

Background: Left ventricular non-compaction (LVNC) cardiomyopathy is a persistence of abnormal foetal myocardium and is a rare cause of cardiomyopathy in the peripartum period. Unlike other causes of peripartum cardiomyopathy which typically improve, LVNC has significant long-term personal and family implications and needs lifelong follow-up.

Case Summary: We describe a unique case of a 30-year-old woman who developed cardiomyopathy in the peripartum period which was revealed on cardiovascular magnetic resonance imaging to be due to occult LVNC.

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Background: Simulation places multiple simultaneous demands on participants. It is well documented in the literature that many participants feel performance stress, anxiety or other emotions while participating in simulation activities. These feelings and other stressors or distractions may impact participant ability to engage in simulation.

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Objectives: We characterized human H1N1 influenza isolate A/Hokkaido/15/02, which has haemagglutinin and neuraminidase mutations that reduce drug susceptibility to oseltamivir, zanamivir and peramivir.

Methods: One wild-type and three mutant viruses were isolated by plaque purification. Viruses were tested in MUNANA-based enzyme assays, cell culture and receptor binding assays.

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A total of 126 influenza B isolates isolated between 1998 and 2002 from Australasia and the Asia-Pacific region were tested for their sensitivity to the neuraminidase (NA) inhibitor drugs zanamivir and oseltamivir carboxylate using a fluorescence-based enzyme assay. The mean (+/-1 S.D.

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Zanamivir and oseltamivir, specific inhibitors of influenza virus neuraminidase, have significantly different characteristics in resistance studies. In both cases resistance is known to arise through mutations in either the hemagglutinin or neuraminidase surface proteins. A new inhibitor under development by Biocryst Pharmaceuticals, BCX-1812, has both a guanidino group, as in zanamivir, and a bulky hydrophobic group, as in oseltamivir.

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