Publications by authors named "Christianne Tan"

Background: Recent US guidelines recommend lower blood pressure (BP) targets in hypertension, but aggressive lowering of diastolic BP (DBP) can occur at the expense of myocardial perfusion, particularly in the presence of coronary artery disease. We sought to establish the long-term impact of low DBP on mortality among patients undergoing percutaneous coronary intervention with well-controlled systolic BP.

Methods: We analyzed data from 12 965 patients undergoing percutaneous coronary intervention between 2009 and 2018 from the Melbourne Interventional Group registry who had a preprocedural systolic BP of ≤140 mm Hg.

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Background: Heart failure is increasing in prevalence, creating a greater public health and economic burden on our health care system. With a rising proportion of hospitalisations for heart failure with preserved ejection fraction (HFpEF) compared to heart failure with reduced ejection fraction (HFrEF) and lack of proven therapies for HFpEF, patient characterisation and defining clinical outcomes are important in determining optimal management of heart failure patients. There is scarce Australian-specific data with regards to the burden of disease of patients with HFpEF which further limits our ability to appropriately manage this syndrome.

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Aims: We sought to investigate if sex disparity exists for secondary prevention pharmacotherapy following acute coronary syndrome (ACS) and impact on long-term clinical outcomes.

Methods And Results: We analysed data on medical management 30-day post-percutaneous coronary intervention (PCI) for ACS in 20 976 patients within the multicentre Melbourne Interventional Group registry (2005-2017). Optimal medical therapy (OMT) was defined as five guideline-recommended medications, near-optimal medical therapy (NMT) as four medications, sub-optimal medical therapy (SMT) as ≤3 medications.

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Background: In Australia and New Zealand, more than 2000 carotid endarterectomies are performed annually. The major morbidities arising from this procedure are post-operative stroke, cranial nerve injury and death. Carotid endarterectomy surgery is a key component of the vascular surgical training programme.

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Glycoprotein IIb/IIIa inhibitors (GPIs) are a treatment option in the management of acute coronary syndromes (ACSs). Evidence supporting the use of GPIs predates trials establishing the benefits of P2Y12 inhibitors, routine early invasive therapy, and thrombectomy devices in patients with ACS. The aim of this study was to determine trends in GPI use and their associated outcomes in contemporary practice.

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Article Synopsis
  • Hospitals struggle to meet the recommended time for percutaneous coronary intervention (PCI) in ST elevation myocardial infarction (STEMI) cases due to delays in staff recall caused by traffic and distance.
  • A study used Google Maps to estimate travel times for hospital staff at different times of day, revealing that traffic congestion significantly affects inner metropolitan hospitals while distance impacts outer ones.
  • The findings indicate that travel times increase during peak hours, with fewer staff arriving within the critical 30-minute window for STEMI treatment, highlighting the need for better planning and resource allocation for on-call staff.
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