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Influence of cardioplegia techniques on outcomes after aortic valve replacement

Dual anterograde and retrograde cardioplegia delivery, warm induction and hotshot delivery had previously been shown to confer myocardial protection, but have not been studied for over a decade. High-sensitivity troponins (hs-Tn) are now the recommended biomarkers for assessing myocardial necrosis. We compared the degree of hs-TnT release and outcomes of aortic valve replacement (AVR) by these cardioplegia techniques.

T. Wang, D. Choi, T. Wilcox, H. White, T. Ramanathan
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

Features and outcomes of eosinophilic myocarditis: A single-centre case series

Eosinophilic myocarditis (EM) is a rare and potentially fatal entity characterised by inflammation with infiltrating eosinophils. Limited published data are available documenting presentation, management and prognosis. We report these data in a series of patients with EM treated at Auckland City Hospital.

T. Wang, T. Watson, B. Lowe, J. Pemberton, N. Kingston, C. Ellis, P. Ruygrok
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

Elevation of aspartate aminotransferase predicts mortality after coronary artery bypass grafting

Cardiac troponins are the recommended biomarkers for diagnosing myocardial infarction (MI). Since troponins have become widely available, the roles of other less specific biomarkers have been seldom studied. Aspartate aminotransferase (AST) not only correlates with MI, but also with liver injury due to ischaemia or congestion. We assessed whether post-operative AST levels were associated with adverse outcomes after contemporary coronary artery bypass grafting (CABG).

T. Wang, R. Stewart, T. Ramanathan, G. Gamble, H. White
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

Disparities of outcomes between Pacific Island and European patients undergoing coronary artery bypass grafting

Ischaemic heart disease remains the single most common cause of mortality in New Zealand. Significant disparities exist in terms of cardiovascular risk factors, events and access to interventions across various ethnic groups. We compared the characteristics and outcomes of coronary artery bypass grafting (CABG) between Pacific and European patients.

T. Wang, R. Stewart, T. Ramanathan, G. Gamble, H. White
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

Diagnosis of myocardial infarction after aortic valve replacement with high-sensitivity troponins

The Universal Definition for type 5 myocardial infarction (MI) applies to coronary artery bypass grafting (CABG), while perioperative MIs for other cardiac surgeries are rarely studied and not specifically defined. We assessed whether high-sensitivity troponin (hs-TnT), with or without concurrent ischaemic changes on electrocardiogram or echocardiogram, predicted mortality and morbidity after aortic valve replacement (AVR).

T. Wang, R. Stewart, T. Ramanathan, D. Choi, G. Gamble, P. Ruygrok, H. White
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

Comparison of society of thoracic surgeon’s risk models with EuroSCORE and EuroSCORE II at adverse outcome prediction after coronary artery bypass grafting

EuroSCORE and the Society of Thoracic Surgeon’s (STS) risk models are the most widely used models in the pre-operative risk assessment of cardiac surgery. We assessed how the performance of STS risk models compared to both EuroSCORE and its revised version EuroSCORE II for coronary artery bypass grafting (CABG).

T. Wang, A. Li, T. Ramanathan, G. Gamble, R. Stewart, H. White
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

Cardioplegia in contemporary coronary artery bypass grafting: Effects on high-sensitivity troponins and outcomes

Dual cardioplegia anterograde and retrograde delivery, warm induction and hotshot delivery techniques had previously been shown to confer myocardial protection, but there is a paucity of recent data. High-sensitivity troponins (hs-Tn) are now the recommended biomarkers for assessing myocardial necrosis. We compared the degree of hs-Tn release and outcomes of CABG by cardioplegia techniques.

T. Wang, A. Li, T. Wilcox, H. White, T. Ramanathan
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

AV junction ablation audit – Auckland City Hospital

Atrio-ventricular junction (AVJ) ablation remains a strategy for patients with symptomatic atrial fibrillation (AF). We evaluated demographics and procedural outcomes in a contemporary series of patients undergoing AVJ ablation at our institution.

J. Voss, L. Maher, C. Jones, N. Lever
Auckland City Hospital, Auckland
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

The Australian experience of government subsidisation of novel oral anticoagulants (NOACs) Online Only

NOACs offer physicians an alternative to warfarin for stroke prevention in atrial fibrillation (AF). The Pharmaceutical Benefits Scheme (PBS) is the system whereby the Australian Government subsidises medications for defined indications. Initially NOACs were only subsidised for specific venous thromboembolism treatment and prevention indications. Authorities to prescribe NOACs for prevention of stroke in at-risk patients with AF were added to the PBS in August 2013 for rivaroxaban, and September 2013 for apixaban and dabigatran.

A. Vlachadis Castles, W. van Gaal
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

Prevalence of obstructive coronary artery disease among patients undergoing coronary angiography at an Australian Tertiary Hospital

Previous studies from overseas have suggested that many patients undergoing coronary angiograms are found to have normal coronary arteries. Excessive use of coronary angiography leads to wasteful health spending and puts patients at risk. Australia has a publicly funded health system, so it is particularly pertinent to ensure appropriate use of health care resources. The aim of this study is to evaluate the prevalence of coronary artery disease in a contemporary cohort of Australian patients undergoing coronary angiography.

D. Tsang, M. Yudi, S. Joshi
Cardiology Department, The Royal Melbourne Hospital, Melbourne, Australia
Heart, Lung and Circulation – Volume 23, Supplement 1, e1-e48
Abstract & full-text available.

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