Publications by authors named "Christopher Leong"
Article Synopsis
- Our study reveals that herbaceous sedge plants emit significantly more isoprene than previously thought, especially at higher temperatures, surpassing emissions models based on trees.
- Sedge plants show an exponential response to temperature changes, with their Q10 values ranging from 7.2 to 12, indicating much greater sensitivity than typical isoprene emitters like trees, which have a Q10 of about 3.
- During heat waves, these sedges can emit isoprene levels comparable to those of dominant urban trees, potentially contributing to increased ozone and aerosol pollution in cities.
It has been widely reported that isoprene emissions from the Arctic ecosystem have a strong temperature response. Here we identify sedges (Carex spp. and Eriophorum spp.
View Article and Find Full Text PDFBackground: The World Health Organisation declared the coronavirus disease 2019 (COVID-19) a pandemic on March 11, 2020. While globally, the relative caseload has been high, Australia's has been relatively low. During the pandemic, radiology services have seen significant changes in workflow across modalities and a reduction in imaging volumes.
View Article and Find Full Text PDFIntroduction: The use of ionising radiation results in occupational exposure to medical imaging professionals, requiring routine monitoring. This study aims to assess the effect of increased utilisation of mobile X-ray units, mobile imaging of non-routine body regions and radiographer work practice changes for impact on staff radiation dose during the early stages of the COVID-19 pandemic.
Methods: A retrospective analysis of general radiology departments across two metropolitan hospitals was performed.
Article Synopsis
- Intracranial hemorrhage (ICH) is a serious complication for patients with ventricular assist devices (VADs), and the safety of emergent anticoagulation reversal using four-factor prothrombin complex concentrate (PCC) remains unclear.
- A study reviewed 16 cases of ICH in VAD patients, finding a high mortality rate of 63%, but no thromboembolic events occurred between PCC reversal and the resumption of anticoagulation.
- The timing of anticoagulation resumption after PCC reversal averaged around 9 days, and monitoring lactate dehydrogenase (LDH) levels may help in managing thromboembolic risks post-reversal.
Background: Medical management for type B aortic dissections (TBADs) require aggressive blood pressure and heart rate control to minimize further dissection extension and to restore perfusion to vital organs. Current guidelines recommend β-blockers (BB) as first-line therapy, however do not differentiate an ideal agent for use.
Objective: This study evaluated the hemodynamic safety of continuous infusion labetalol compared to esmolol combination (EC) therapies for TBADs.