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Cardiology Practice Review TM Making Education Easy Issue 4 - 2016 Welcome to the fourth issue of Cardiology Practice Review. In this issue: >>ESC/EAS guideline for dyslipidaemia >>ESC/EACTS guideline for atrial fibrillation >>European standards to prevent repeat heart attacks >>Severe aortic stenosis at low-intermediate surgical risk: a BMJ guideline >>Discrepancies in cardiovascular screening guidelines >>ESC Position Paper on cancer drugs and cardiovascular toxicity >>AHA releases new sugar guidelines for children >>AHA calls for guidelines on sleep disorders and CV risk >>CPAP: no CV benefit in obstructive sleep apnoea >>1 October PBS price reductions >>PBAC recommends sacubitril with valsartan >>TGA vacancies Follow RESEARCH REVIEW Australia on Twitter now @ Cardioreviews Visit https://twitter.com/cardioreviews Research Review TM Email [email protected] This new Review covers news and issues relevant to clinical practice in cardiology. It will bring you the latest updates, both locally and from around the globe, in relation to topics such as new and updated treatment guidelines, changes to medicines reimbursement and licensing, educational, medicolegal issues, professional body news and more. In this issue we bring you updated European Society of Cardiology clinical practice guidelines for the management of dyslipidaemia, atrial fibrillation and prevention of repeat heart attacks. A group of guideline developers and the BMJ have collaborated to launch “rapid recommendations,” starting with guidance on the treatment of patients with severe symptomatic aortic stenosis and low-to-intermediate surgical risk. From the US, the American Heart Association has released new sugar guidelines for children, and has called for guidelines on sleep disorders and cardiovascular risk. And finally on the back cover you will find a summary of upcoming local and international educational opportunities including workshops, webinars and conferences. We hope you enjoy this new Research Review publication and look forward to hearing your comments and feedback. Kind Regards, Dr Janette Tenne Medical Research Advisor [email protected] Clinical Practice ESC/EAS guideline for the management of dyslipidaemias The European Society of Cardiology (ESC) and the European Atherosclerosis Society (EAS) have published a new guideline addressing the management of dyslipidaemia. The new guideline highlights the need to lower lipid levels at a population level and in high-risk individuals. Combination treatment (ezetimibe and a statin) is recommended in patients with treatment-resistant high cholesterol. An individual LDL cholesterol target is recommended based on risk (defined by comorbidities and 10-year risk of fatal cardiovascular disease). This differs to US guidelines that recommend a statin for all high-risk patients – even those with low cholesterol. The new guideline also recommends that all patients, regardless of risk, should achieve a minimum 50 percent reduction in LDL cholesterol. The guideline also addresses PCSK9 inhibitors, noting they can be considered in patients with persistent high LDL cholesterol on a statin and ezetimibe. However, PCSK9 inhibitors are extremely expensive and therefore their use may be limited in some countries. These medications have been approved by the TGA in Australia for use in patients with familial hypercholesterolaemia, but have not been funded by the PBS yet, so can only be dispensed on private script. Additionally, the guideline gives more importance to lifestyle and nutrition than the previous guideline, with goals for body mass index and weight. There is no longer a requirement for fasting before screening for lipid levels, given new evidence that non-fasting blood samples give similar cholesterol results. Eur Heart J. 2016 Aug 27. [Epub ahead of print] Download the guideline http://tinyurl.com/h5u8khq Atrial Fibrillation Research Review TM Subscribe free, visit www.researchreview.com.au and update your subscription to receive Atrial Fibrillation Research Review. Phone 1300 132 322 www.researchreview.com.au a RESEARCH REVIEW publication 1 Cardiology Practice Review TM Clinical Practice ESC/EACTS guideline for the management of atrial fibrillation The ESC has published a new guideline on atrial fibrillation (AF) developed in collaboration with the European Association for Cardio-Thoracic Surgery (EACTS) and endorsed by the European Stroke Organisation. There is now more emphasis on early detection of asymptomatic ‘silent’ AF. Diagnosis of AF requires an ECG, with the prognostic value of atrial high rate episodes picked up by implanted devices unclear at present. Silent, undiagnosed AF is a common cause of stroke, and the guideline recommends both opportunistic and targeted intensive ECG screening for AF in all patients over the age of 65 or with other risk factors for AF such as OSA, HT, CAD, obesity or diabetes, and especially in those patients with a history of stroke or transient ischaemic attack. Oral anticoagulation remains a major treatment component in AF, and, apart from patients at the lowest risk of stroke (women and men without any clinical risk factors), most others will derive a net clinical benefit from anticoagulation. Patients with a single stroke risk factor (CHA 2DS2-VASc score of 2 for women and 1 for men) should be considered for anticoagulation, taking account of individual characteristics and patient preferences; men with a CHA 2DS2-VASc score of 2 and women with a score of 3 should be recommended for anticoagulation. Non vitamin-K oral anticoagulants (NOACs) are now recommended as the first-line anticoagulant in eligible patients as a result of their better safety profile. Patients with valvular AF (moderate-severe mitral stenosis or mechanical heart valves – NB: new definition) are ineligible for NOAC therapy, as are patients with severe chronic kidney disease, and should be treated with vitamin-K antagonists, maintaining a high time in therapeutic range. Aspirin and other antiplatelets have no role in stroke prevention. Preventing major bleeding events in anticoagulated AF patients is extremely important. To reduce the risk of bleeding, the guideline provides a list of modifiable bleeding risk factors that clinicians should minimise in anticoagulated patients, but a specific bleeding score is no longer recommended. Importantly, bleeding and stroke risk factors overlap and patients at high risk of bleeding are likely to benefit from anticoagulation. The guideline also provides suggestions for initiation and/or resumption of treatment after ischaemic strokes and after intracranial haemorrhage. These difficult decisions should be taken by interdisciplinary teams. Symptoms should be assessed by the modified EHRA score, including AF-related tiredness and breathlessness, which are common symptoms in AF patients. Catheter ablation is now reaching the mainstream of AF management and data underpinning its use have expanded in number and quality. Catheter ablation is the rhythm control therapy of choice in patients with symptomatic recurrences of AF on antiarrhythmic drug therapy, and emerges as a valid first-line alternative to anti-arrhythmic drugs in selected patients with symptomatic paroxysmal AF. Eur Heart J. 2016 Aug 27. [Epub ahead of print] Read the full guideline http://tinyurl.com/jtn5meb and the media release http://tinyurl.com/hmlswbo. European standards to prevent repeat heart attacks launched European standards to prevent repeat heart attacks have been published in the European Journal of Preventive Cardiology. The standards were defined by the ESC. The consensus document outlines the steps patients and healthcare professionals can take to prevent recurrent heart attacks: 1. Quit smoking 2. Undertake regular physical activity 3. Eat healthy food 4. Take prescribed medication to protect coronary vessels, and to control risk factors such as high blood pressure and cholesterol According to the EUROASPIRE survey, after an acute myocardial infarction 16% of patients smoke, 38% are obese and 60% report little or no physical activity. Only half of patients are advised to participate in a cardiac rehabilitation programme, of whom just 80% actually attend. European guidelines on cardiovascular disease prevention outline blood pressure and cholesterol targets but these are still missed. Prevention of recurrent heart attacks should begin immediately after the first event, while patients are still in hospital. This should be given equal priority to treating the initial heart attack. Patients should be referred to outpatient cardiac rehabilitation to reinforce lifestyle messages and encourage adherence to behaviour change and medications. Eur J Prev Cardiol. 2016 Sep 6. [Epub ahead of print] Read the article http://tinyurl.com/jxh2bnj and media release http://tinyurl.com/jbc5gws. www.researchreview.com.au TAVI or SAVR for patients with severe, symptomatic, aortic stenosis at low to intermediate surgical risk: a clinical practice guideline With the goal of incorporating important trial results into clinical practice as quickly as possible and shortening the time it takes to revise guidelines, a group of guideline developers and the BMJ have collaborated to launch “rapid recommendations,” starting with guidance on the treatment of patients with severe symptomatic aortic stenosis and low-to-intermediate surgical risk. Narrowly focused, the guidelines contain age-stratified recommendations to help guide clinicians. For patients younger than 65 years, there is a strong recommendation for surgical aortic valve replacement (SAVR) over transcatheter aortic valve insertion (TAVI). For patients aged between 65 and 74 years there is a weak recommendation for SAVR over TAVI. For patients 75 and older, there is a strong recommendation for TAVI over SAVR in the oldest age group (85 years and above) and a weak recommendation for TAVI between ages 75 and 84. The major uncertainty is the durability of TAVI valves which drives recommendations in favour of SAVR in younger patients. If transfemoral TAVI is not possible, SAVR is preferred to transapical TAVI, according to the guidance. BMJ. 2016 Sep 28;354:i5085. Download a copy of the guideline http://tinyurl.com/jtfsvmb. Discrepancies in cardiovascular screening guidelines A new review has found that considerable discrepancies in cardiovascular screening guidelines still exist, with no consensus on optimum screening strategies or treatment threshold. The researchers searched the MEDLINE and CINAHL databases for guidelines published between May 3 2009 and June 30 2016. They also searched the following guideline-specific databases: National Guideline Clearinghouse in the US, National Library for Health Guidelines Finder in the UK, Canadian Medical Association Clinical Practice Guidelines Infobase and Guidelines International Network International Guideline Library. Two reviewers screened titles and abstracts to identify guidelines from Western countries containing recommendations for cardiovascular risk assessment for healthy adults. Two reviewers independently assessed rigor of guideline development using the Appraisal of Guidelines for Research and Evaluation II instrument, and one extracted the recommendations. Of the 21 guidelines, 17 showed considerable rigor of development. These recommendations address assessment of total cardiovascular risk (5 guidelines), dysglycaemia (7 guidelines), dyslipidaemia (2 guidelines), and hypertension (3 guidelines). All but one recommendation advocates for screening, and most include prediction models integrating several relatively simple risk factors for either deciding on further screening or guiding subsequent management. However, no consensus on the strategy for screening, recommended target population, screening tests, or treatment thresholds exists. Ann Intern Med. 2016 Sep 13. [Epub ahead of print] Read the abstract http://tinyurl.com/zwdrylb. a RESEARCH REVIEW publication 2 Cardiology Practice Review TM Elderly (≥70 years) CHF patients deserve an age proven blocker1,2 NEBILET reduced the risk of all cause mortality or cardiovascular hospitalisation in a broad range of elderly CHF patients*1,2 * vs placebo P= 0.039; patients ≥ 70 years regardless of age, gender or left ventricular ejection fraction NEBILET: Age proven in elderly (≥70 years) CHF patients1,2 CHF= Chronic Heart Failure PBS Information: Restricted benefit. Moderate to severe heart failure. Refer to PBS Schedule for full restricted benefit information. Please review full Product Information before prescribing. The Product Information can be accessed at www.menarini.com.au/pi Nebilet® (nebivolol hydrochloride) tablets 1.25 mg, 5 mg, 10 mg. INDICATIONS: Essential hypertension. Stable chronic heart failure (CHF) as an adjunct to standard therapies in patients 70 years or older. CONTRAINDICATIONS: Hypersensitivity to the active or any of the excipients; liver insufficiency or liver function impairment; acute heart failure; cardiogenic shock or episodes of heart failure decompensation requiring IV inotropic therapy; sick sinus syndrome, including sino-atrial block; second and third degree heart block (without a pacemaker); history of bronchospasm (e.g. including COPD) and/or asthma; untreated phaeochromocytoma; metabolic acidosis; bradycardia (HR < 60 bpm prior to starting therapy); hypotension (systolic BP < 100 mmHg); severe peripheral circulatory disturbances. PRECAUTIONS: Avoid abrupt cessation unless clearly indicated – reduce dosage gradually over 1-2 wks; refer to full PI. If it must be withdrawn abruptly, close observation is required. Anaesthesia; untreated congestive heart failure, unless stabilised; bradycardia; peripheral circulatory disorders (e.g. Raynaud’s disease, intermittent claudication); first degree heart block; Prinzmetal’s or variant angina; lipid and carbohydrate metabolism – does not affect glucose levels in diabetic patients, but may mask symptoms of hypoglycaemia. Hyperthyroidism; COPD/asthma; phaeochromocytoma; various skin rashes; conjunctival xerosis; oculomucocutaneous syndrome; psoriasis; increased sensitivity to allergens and severity of anaphylactic reactions; galactose intolerance, Lapp-lactase deficiency or glucose-galactose malabsorption; driving vehicles or operating machines. Pregnancy (Cat C). Lactation. Children and adolescents. Renal and hepatic insufficiency – see Dosage and Administration. INTERACTIONS: Combination not recommended: Class I antiarrhythmics; calcium channel antagonists (verapamil/dilitiazem); centrally-acting antihypertensives; other beta-blockers (incl. eye drops). Combination to be used with caution: Class III antiarrhythmic drugs; anaesthetics (volatile); insulin and other oral diabetic medicines; calcium antagonists (dihydropyridine type); catecholamine depleting agents; baclofen; amifostine; for other combinations requiring careful consideration, see full PI. ADVERSE EFFECTS: Headache, dizziness, tiredness, fatigue, paraesthesia, constipation, nausea, diarrhoea, cardiac failure aggravated, bradycardia, hypotension, dyspnoea, oedema, slowed AV conduction/ AV-block, bronchospasm. Post-marketing reports of hypersensitivity, angioneurotic oedema, abnormal hepatic function, acute pulmonary oedema, acute renal failure, myocardial infarction, others see full PI. DOSAGE AND ADMINISTRATION: Once daily dosing, can be given with or without meals, consistent approach is recommended. Hypertension: 5 mg daily. Renal insufficiency: recommended starting dose is 2.5 mg daily, can be increased to 5 mg if needed. Patients > 65 years: recommended starting dose is 2.5 mg daily, can be increased to 5 mg if needed. Patients > 75 years: caution must be exercised and these patients monitored closely. Chronic Heart Failure: The initial up titration should be done gradually at 1-2 wk intervals based on patient tolerability starting at 1.25 mg once daily, increased to 2.5 mg, then to 5 mg and then to 10 mg once daily. Initiation of therapy and every dose increase should be done under close supervision for at least 2 h. No dose adjustment is required in patients with mild to moderate renal insufficiency. Use in patients with severe renal insufficiency (serum creatinine ≥ 250 μmol/L) is not recommended. Date prepared 17 December 2015. References: 1. Nebilet Approved Product Information, 14 December 2015. 2. Flather MD et al. Eur Heart J 2005; 26: 215–25. A. Menarini Australia Pty Ltd. ABN 62 116 935 758, Level 8, 67 Albert Avenue, Chatswood NSW 2067 Medical Information 1800 644 542. NEB-AU-0501 April 2016 • ALMIN.1.2 ALMIN.1.2 Nebilet Journal Advert 190x245 v4.indd 1 www.researchreview.com.au 13/04/2016 10:44:36 a RESEARCH REVIEW publication 3 Cardiology Practice Review TM Society and Professional Body News ESC Position Paper on cancer treatments and cardiovascular toxicity CPAP: no CV benefit in patients with obstructive sleep apnoea and established CVD A new position paper on cardio-oncology developed by the ESC Committee for Practice Guidelines has reviewed cardiovascular complications of anticancer therapy. The paper focuses on nine categories: myocardial dysfunction and heart failure; coronary artery disease; valvular disease; arrhythmias; arterial hypertension; thromboembolic disease; peripheral vascular disease and stroke; pulmonary hypertension; and pericardial complications. An Australian study funded by the National Health and Medical Research Council has found that therapy with continuous positive airway pressure (CPAP) plus usual care, as compared with usual care alone, did not prevent cardiovascular events in patients with moderate-to-severe obstructive sleep apnoea and established cardiovascular disease. In the study, 2717 adults between 45 and 75 years of age who had moderate-to-severe obstructive sleep apnoea and coronary or cerebrovascular disease were randomised to receive CPAP treatment plus usual care (CPAP group) or usual care alone (usual-care group). The primary end point was a composite of death from cardiovascular causes, myocardial infarction, stroke, or hospitalisation for unstable angina, heart failure, or transient ischaemic attack. Secondary end points included other cardiovascular outcomes, health-related quality of life, snoring symptoms, daytime sleepiness, and mood. Most of the participants were men who had moderate-to-severe obstructive sleep apnoea and minimal sleepiness. In the CPAP group, the mean duration of adherence to CPAP therapy was 3.3 hours per night, and the mean number of apnoea or hypopnoea events per hour of recording decreased from 29.0 events per hour at baseline to 3.7 events per hour during follow-up. After a mean follow-up of 3.7 years, a primary end-point event had occurred in 229 participants in the CPAP group (17.0%) and in 207 participants in the usual-care group (15.4%) (hazard ratio with CPAP, 1.10; 95% CI, 0.91 to 1.32; p=0.34). No significant effect on any individual or other composite cardiovascular end point was observed. CPAP significantly reduced snoring and daytime sleepiness and improved health-related quality of life and mood. N Engl J Med. 2016 Sep 8;375(10):919-31 Read the full article http://tinyurl.com/zxqbnfu. For each type of complication, the authors outlined which patients are at risk, how to detect and prevent possible side effects, and how to treat and follow up with patients. For example, coadministration of anthracyclines and trastuzumab in patients with breast cancer markedly increases the incidence of heart failure. But cardiotoxicity can be reduced significantly by introducing a drug-free interval between the two agents. The paper also emphasises the importance of establishing multidisciplinary teams that include cardiologists, oncologists, nurses, and heart failure and imaging specialists to provide the best care for cancer patients and survivors. The authors note that ultimately structured cardio-oncology centres are needed. Eur Heart J. 2016 Aug 26. [Epub ahead of print] Download the position paper http://tinyurl.com/zr5h47d. AHA releases new sugar guidelines for children For this American Heart Association (AHA) scientific statement, the current scientific evidence for studies examining the cardiovascular health effects of added sugars on children was reviewed and graded. The available literature was subdivided into five areas: effects on blood pressure, lipids, insulin resistance and diabetes mellitus, nonalcoholic fatty liver disease, and obesity. Among US children, the associations between added sugars and increased cardiovascular disease risk factors begin at levels well below current sugar consumption levels. There is strong evidence to support an association of added sugars with increased cardiovascular disease risk in children through increased energy intake, increased adiposity, and dyslipidaemia. The statement recommends that children consume ≤25 g (100 calories or ≈6 teaspoons) of added sugars per day and children <2 years of age should avoid added sugars. Although added sugars most likely can be safely consumed in low amounts as part of a healthy diet, few children achieve such levels, making this an important public health target. Circulation. 2016 Aug 22. [Epub ahead of print] Read the statement http://tinyurl.com/jqqxz8q. AHA calls for guidelines on sleep disorders and CV risk The AHA has released a scientific statement on the impact of short sleep duration and sleeping disorders on cardiovascular health, published in Circulation. Based on a review of available epidemiologic data, the AHA panel concluded that both short- and long-duration sleep and sleep disorders are associated with adverse cardiometabolic risk profiles and outcomes, and treating such disorders may provide clinical benefits, especially for blood pressure. In addition, they found that energy balance is negatively affected by less sleep; however, the impact of sleep disorder treatment on obesity remains unclear. The impact of obstructive sleep apnoea and insomnia on cardiovascular disease and metabolic disorders is substantial. Population-based studies show that individuals with obstructive sleep apnoea or insomnia are at significantly greater risk for cardiovascular and cerebrovascular diseases (e.g., arrhythmias, atherosclerosis, coronary heart disease, heart failure, hypertension, and stroke) and metabolic disorders (e.g., obesity, type 2 diabetes mellitus, and dyslipidaemia) but use of CPAP does not reduce CV events in these patients (see above) although there may be symptomatic benefit. Taking into account recommendations put forth by the American Academy of Sleep Medicine and the Sleep Research Society, the authors also urged the AHA to directly address sleep behaviour in a public health campaign. This campaign should include clear guidelines for adequate sleep, as well as suggestions for including sleep disorder screening in routine health care and in public health settings. For future research, the panel recommended including more diverse populations, longerterm follow-up, and accurate and objective measures of sleep behaviour and sleep architecture. Other sleep disorders such as restless leg syndrome and periodic limb movement disorder should also be studied to identify a relationship with cardiometabolic risk. Circulation. 2016 Sep 19. [Epub ahead of print] Download the statement http://tinyurl.com/hkengyw. www.researchreview.com.au NEWS in brief 1 October PBS price reductions From 1 October, more than 2000 medicines listed on the PBS will incur price reductions, saving consumers up to $20 per script and taxpayers $900 million over four years. These savings are the result of the PBS Access and Sustainability Package reforms which passed Parliament last year. Search the full list of PBS medicines http://tinyurl.com/j3no4rn. PBAC recommends sacubitril with valsartan The PBAC recommended the listing of sacubitril with valsartan for the treatment of patients with chronic heart failure and a reduced left ventricular ejection fraction on the basis of acceptable cost effectiveness compared to enalapril. The PBAC noted the reduced price proposed, the revised PBS expenditure estimates and considered the proposed two-tier capping levels to be a reasonable basis for the Risk Sharing Arrangement. Read more http://tinyurl.com/jc64er9. TGA statutory advisory committee and specialist advisor vacancies The TGA is seeking expressions of interest from professionals with expertise in relevant scientific and medical fields or appropriate consumer issues to support their functions as a best practice regulator. They are seeking applications to become core members on one or more of their statutory advisory committees or act as specialist expert advisors on specific topics. Find out more http://tinyurl.com/hpzb7b2. Subscribe free, visit www.researchreview.com.au and update your subscription to Research Review a RESEARCH REVIEW publication 4 Cardiology Practice Review TM Conferences Research Review Publications EuroEcho-Imaging 2016 Acute Coronary Syndrome Research Review with Professor John French http://tinyurl.com/gos7bqt Details: 7-10 December 2016, Leipzig, Germany Website: http://www.escardio.org/Congresses-&-Events/EuroEcho–Imaging International Stroke Conference 2017 Details: 22-24 February 2017, Houston, TX, USA Website: http://tinyurl.com/hn3z54l American College of Cardiology Scientific Sessions 2017 Atrial Fibrillation Research Review with Dr Andrei Catanchin http://tinyurl.com/gpvl4dv Cardiology Research Review with Associate Professor John Amerena http://tinyurl.com/gpxu6bl Website: https://accscientificsession.acc.org/ Heart Failure Research Review with Professor Peter Macdonald and Dr John Atherton http://tinyurl.com/hxxrsv6 Workshops, Webinars and CPD Interventional Cardiology Research Review with Associate Professor Craig Juergens http://tinyurl.com/h3h3wcp Hypertension: beyond LVH Product Review - Evolocumab for familial hypercholesterolaemia http://tinyurl.com/jqnjlhu Details: 17-19 March 2017, Washington, DC, USA Details: 1 December 2016, 18:00 to 19:00 CET Further information available, http://tinyurl.com/h63otmm. Clinical Review - Xantus, stroke prevention in AF http://tinyurl.com/jp66gd6 MELBOURNE: Basic bedside ECHO/FCU Workshop Clinical Review - Atherogenic dyslipidaemia, CV risk and statin therapy Details: 3-4 December, 2016, The Como, Chapel St, South Yarra, VIC Further information available, http://tinyurl.com/zkzlelb. http://tinyurl.com/z2gs8c7 Resuscitation and cardiogenic shock – from drugs to devices Details: 5 December 2016, 18:00 to 19:00 CETT Further information available, http://tinyurl.com/go2nv5m. Clinical applications and new insights of myocardial contrast echocardiography Details: 14 December 2016, 18:00 to 19:00 CET Further information available, http://tinyurl.com/j3yne3s. Cardiology Research Review TM Subscribe free, visit www.researchreview.com.au and update your subscription to receive Cardiology Research Review. Benefit of CRT optimisation: fiction or reality? Details: 20 December 2016, 18:00 to 19:00 CET Further information available, http://tinyurl.com/zvu3d6m. RESEARCH REVIEW The Australian Perspective Since 2007 Acute Coronary Syndrome Research Review TM Subscribe free, visit www.researchreview.com.au and update your subscriptionto receive Acute Coronary Syndrome Research Review. Australian Research Review subscribers can claim CPD/CME points for time spent reading our reviews from a wide range of local medical and nursing colleges. Find out more on our CPD page. Practice Reviews cover news and issues relevant to Australian clinical practice. Research Review Australia Pty Ltd is an independent Australian publisher. Research Review receives funding from a variety of sources including Government depts., health product companies, insurers and other organisations with an interest in health. Journal content is created independently of sponsor companies with assistance from leading local specialists. Privacy Policy: Research Review will record your email details on a secure database and will not release them to anyone without your prior approval. Research Review and you have the right to inspect, update or delete your details at any time. Disclaimer: This publication is not intended as a replacement for regular medical education but to assist in the process. The reviews are a summarised interpretation of the published study and reflect the opinion of the writer rather than those of the research group or scientific journal. It is suggested readers review the full trial data before forming a final conclusion on its merits. To contact Research Review Australia, please email [email protected]. Research Review publications are intended for Australian health professionals. www.researchreview.com.au a RESEARCH REVIEW publication © 2016 RESEARCH REVIEW 5