Author Interviews, Heart Disease, JAMA, Pediatrics / 14.08.2019

MedicalResearch.com Interview with: Dr Juan Pablo Kaski MD(Res) FRCP FESC Director of the GOSH Centre for Inherited Cardiovascular Diseases Great Ormond Street Hospital, University College London Institute of Cardiovascular Science, London, UK  MedicalResearch.com: What is the background for this study? Would you briefly explain what is meant by Hypertrophic Cardiomyopathy?  Response: Hypertrophic cardiomyopathy (HCM) is a genetic condition characterised by abnormal thickening of the muscle of the heart and can affect people of all ages. It is associated with an increased risk of sudden cardiac death (SCD) and, in the last few years, a clinical risk tool that estimates the 5-year risk of SCD in adults with HCM has been developed. However, there are no similar risk models in children, where risk stratification has traditionally been based on clinical risk factors extrapolated from the adult population. We have recently shown that this approach does not discriminate risk well in children, and so the aim of this study was to develop a new risk tool to provide an individualised risk of SCD in children with HCM.  (more…)
Author Interviews, Heart Disease, Nature, Nutrition / 13.08.2019

MedicalResearch.com Interview with: apple-flavenoidsNicola Bondonno PhD National Health and Medical Research Council Early Career Research Fellow School of Medical and Health Sciences Edith Cowan University Joondalup  Perth WA   MedicalResearch.com: What is the background for this study? Response: In an aging society, there could be a huge importance in appropriate evidence-based diets to reduce mortality risk. Therefore, our main question was ‘do diets high in flavonoids reduce the risk of all-cause and cause-specific mortality and is this relationship affected by lifestyle risk factors for early mortality’? In brief, this is the largest study of flavonoid intake and mortality outcomes to date. This population based cohort study was conducted in 56,048 men and women of the Danish Diet, Cancer, and Health Cohort, followed for 23 years, with estimated intakes of 219 individual flavonoid compounds. The results provide a clarity not seen in previous smaller, often underpowered studies.  (more…)
Author Interviews, Heart Disease, Pharmaceutical Companies, Stem Cells, Technology / 12.08.2019

MedicalResearch.com Interview with: Misti Ushio, Ph.D. Chief Executive Officer Michael Graziano, PhD Chief Scientific Officer TARA Biosystem MedicalResearch.com: What is the background for this study? Response: Almost half of all drug recalls are due to cardiac toxicity that was not picked up during early screens. These human cardiac liabilities can go undetected because historically it has been challenging to predict how human hearts will respond to potentially cardiotoxic drugs despite rigorous testing in both animals and in vitro systems throughout drug development. Traditional in vitro systems and animal models do not translate well to humans, and human donor tissue availability is limited for in vitro testing. There is great potential for human-induced pluripotent stem cell cardiomyocytes (iPSC-CMs) to bridge this human translation gap, but it’s been a challenge to train these cells to recapitulate pharmacology seen in mature human heart cells. This stems from the fact that existing experimental models utilize immature human iPSC-CMs which lack relevant physiological hallmarks of adult human cardiac muscle and therefore fail to predict drug responses seen in the clinic. (more…)
Author Interviews, Genetic Research, Heart Disease / 11.08.2019

MedicalResearch.com Interview with: Ambry GeneticsNancy Niguidula, MS, DPH Doctorate in Public Health in Toxicology Ambry Genetics   MedicalResearch.com: What is the background for this study? Response: The clinical presentations of many inherited cardiovascular conditions overlap; thus, genetic testing may clarify diagnoses, help with risk stratification, facilitate appropriate clinical management decisions, and aid in identifying asymptomatic, at-risk relatives. A large number of professional societies have developed practice guidelines and recommendations for genetic testing of cardiovascular diseases. These include international and collaborative expert panels that establish genetic screening and treatment recommendations by drawing on evidence-based medicine. To further strengthen the clinical utility of cardiovascular genetic testing, the American College of Medical Genetics and Genomics (ACMG) published a guideline for 59 genes with clinical actionability that should be reported if found on whole exome sequencing, even when unrelated to the testing indication. (more…)
Author Interviews, Circadian Rhythm, Heart Disease, JACC / 11.08.2019

MedicalResearch.com Interview with: Dr. Alan Cheng, MD MBA Vice President at Medtronic Clinical Research and Therapy Development, Cardiac Rhythm Management Medtronic, Minnesota 55112  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Ventricular arrhythmias can be life threatening among patients with certain types of heart disease. While implantable cardioverter defibrillators (ICDs) have become the primary means in managing these events, we still don’t fully understand when ventricular arrhythmias occur and whether they are just random events that occur at any time of the day. We pooled patient-level data from 6 prospective studies of ICD recipients and leveraged the continuous monitoring features of the ICD to understand when ventricular arrhythmias occur. Across almost 4000 patients with almost 2 years average follow up from the time of implant, we saw that ventricular arrhythmias aren’t randomly distributed throughout the day. In fact, there is a predilection for these events to occur during normal waking hours as compared to the times of the day when most patients are asleep. Additionally, we found that across the year, the spring season had higher rates of arrhythmia occurrence when compared to summer. We didn’t observe any differences in arrhythmia occurrence by the days of the week or months of the year. This analysis is not the first to explore this question but it is the largest to date.  (more…)
Author Interviews, Brigham & Women's - Harvard, Heart Disease, Race/Ethnic Diversity / 05.08.2019

MedicalResearch.com Interview with: Muhammad Ali Chaudhary, MD Research Scientist Center for Surgery and Public Health Department of Surgery Brigham and Women’s Hospital Harvard Medical School Harvard T. H. Chan School of Public Health MedicalResearch.com: What is the background for this study? Response: Many studies have documented disparities in cardiovascular care for minorities, specifically African Americans compared to white patients. Coronary artery bypass grafting (CABG) is a common procedure in the United States, and the outcomes and post-surgical care for African Americans tend to be worse. We examined whether patients insured through TRICARE — a universal insurance and equal-access integrated healthcare system that covers more than 9 million active-duty members, veterans and their families — experienced these disparities. We found no racial disparities in quality-of-care outcomes, providing insights about the potential impacts of universal insurance and an equal-access health care system. The study included 8,183 TRICARE patients, aged 18-64, who had undergone CABG. The study took its data from TRICARE health care claims from the Military Health System Data Repository for the years of 2006 to 2014. (more…)
Author Interviews, Heart Disease, Lancet, Mayo Clinic, Technology / 02.08.2019

MedicalResearch.com Interview with: Paul Friedman, M.D. Professor of Medicine Norman Blane & Billie Jean Harty Chair Mayo Clinic Department of Cardiovascular Medicine Honoring Robert L. Frye, M.D. MedicalResearch.com: What is the background for this study? Response: Atrial fibrillation is an irregular heart rhythm that is often intermittent and asymptomatic.  It is estimated to affect 2.7–6.1 million people in the United States, and is associated with increased risk of stroke, heart failure and mortality. It is difficult to detect and often goes undiagnosed. After an unexplained stroke, it is important to accurately detect atrial fibrillation so that patients with it are given anticoagulation treatment to reduce the risk of recurring stroke, and other patients (who may be harmed by this treatment) are not. Currently, detection in this situation requires monitoring for weeks to years, sometimes with an implanted device, potentially leaving patients at risk of recurrent stroke as current methods do not always accurately detect atrial fibrillation, or take too long. We hypothesized that we could train a neural network to identify the subtle findings present in a standard 12-lead electrocardiogram (ECG) acquired during normal sinus rhythm that are due to structural changes associated with a history of (or impending) atrial fibrillation.   Such an AI enhanced ECG (AI ECG) would be inexpensive, widely available, noninvasive, performed in 10 seconds, and immensely useful following embolic stroke of unknown source to guide therapy. To test this hypothesis, we trained, validated, and tested a deep convolutional neural network using a large cohort of patients from the Mayo Clinic Digital Data Vault. (more…)
Author Interviews, Frailty, Geriatrics, Heart Disease / 29.07.2019

MedicalResearch.com Interview with: Dr-Dalgaard MedicalResearch.com: What is the background for this study? Response: We know that having atrial fibrillation puts you at a higher risk of falls, especially if you are elderly and frail. Additionally, some of the medications used to treat it can cause bradycardia (low heart rate), which could itself increase the risk of falls. Therefore, the aim of this study was to investigate if common medications used to treat atrial fibrillation in older patients were associated with fall-related injuries and syncope (fainting). The medications investigated were rate-lowering drugs (beta-blockers, digoxin, verapamil, diltiazem) and the anti-arrhythmic drugs (amiodarone, propafenone, and flecainide). (more…)
Annals Internal Medicine, Author Interviews, Heart Disease / 29.07.2019

MedicalResearch.com Interview with: Jeffrey L Jackson, MD, MPH Medical College of Wisconsin Milwaukee, Wisconsin MedicalResearch.com: What is the background for this study? What are the main findings? Response: Unfortunately,  most systematic reviews exclude non-English trials, mostly for convenience, but nearly all systematic reviews wind up excluding at least 1 non-English trial.  We looked at whether this was justified, since Google Translate is a free and easily usable platform.  We had native-language speakers in 9 languages (Chinese, French, German, Italian, Japanese, Korean, Romanian, Russian and Spanish) abstract data and had another researcher abstract all the articles using Google Translate. We found that there was over 90% agreement and that the few differences were due to human error, not to problems with the translations. (more…)
AHA Journals, Author Interviews, Cleveland Clinic, Exercise - Fitness, Heart Disease / 26.07.2019

MedicalResearch.com Interview with: Dermot Phelan, MD, PhD Director of the Sports Cardiology Center Cleveland Clinic in Cleveland, Ohio MedicalResearch.com: What is the background for this study? Response: It is well recognized that long-term elite endurance athletes are at higher risk of atrial fibrillation.  We wished to evaluate whether this held true for primarily strength-type athletes. We had the opportunity to screen almost 500 former NFL athletes.  It became clear that we were seeing more atrial fibrillation than one would expect during the screenings. (more…)
Annals Thoracic Surgery, Author Interviews, Beth Israel Deaconess, Brigham & Women's - Harvard, Geriatrics, Heart Disease, Primary Care / 23.07.2019

MedicalResearch.com Interview with: Christina C. Wee, MD, MPH Associate Professor of Medicine Harvard Medical School Director , Obesity Research Program Division of General Medicine Beth Israel Deaconess Medical Center (BIDMC) Associate Program Director, Internal Medicine Program, BIDMC Deputy Editor of the Annals of Internal Medicine MedicalResearch.com: What is the background for this study? Response: New research is showing that for many people without diagnosed heart disease, the risk of bleeding may outweigh the benefits of taking a daily aspirin particularly in adults over 70 years of age.  The American Heart Association and the American College of Cardiology recently updated their guidelines and now explicitly recommend against aspirin use among those over the age of 70 who do not have existing heart disease or stroke. Our study found that in 2017,  a quarter of adults aged 40 years or older without cardiovascular disease – approximately 29 million people – reported taking daily aspirin for prevention of heart disease. Of these, some 6.6. million people did so without a physician's recommendation. (more…)
Author Interviews, Geriatrics, Heart Disease, Lipids / 18.07.2019

MedicalResearch.com Interview with: Richard G. Bach, MD FACC Professor of Medicine Washington University School of Medicine Director, Cardiac Intensive Care Unit Director, Hypertrophic Cardiomyopathy Center Barnes-Jewish Hospital St. Louis, MO 63110 MedicalResearch.com: What is the background for this study? Response: Elderly patients represent the largest group of those hospitalized for an acute coronary syndrome, and age is an important marker of increased risk. The risk of death and recurrent cardiovascular events is greatest among the elderly. High intensity lipid lowering by statins has been shown to reduce the incidence of recurrent cardiovascular events after an acute coronary syndrome in general, but there remains limited data on efficacy and safety of that treatment in the elderly, and guidelines do not routinely advocate higher intensity treatment for patients older than 75 years. In practice, older age has been associated with a lower likelihood of being prescribed intensive lipid lowering therapy. IMPROVE-IT evaluated the effect of higher-intensity lipid lowering with ezetimibe combined with simvastatin compared with simvastatin-placebo among patients after ACS, and observed that ezetimibe added to statin therapy incrementally lowered LDL-cholesterol level and improved CV outcomes. IMPROVE-IT enrolled patients with no upper age limit, which gave us the opportunity to examine the effect of age on outcome on the benefit of more intensive lipid lowering with ezetimibe combined with simvastatin vs. simvastatin monotherapy. (more…)
Author Interviews, Heart Disease, Lipids / 18.07.2019

MedicalResearch.com Interview with: Guanmin Chen MD PhD MPH Senior Biostatistician Research Facilitation, Alberta Health Services Adjunct Research Assistant Professor University of Calgary  Co-authors: Guanmin Chen, PhD, MD, MPH, Megan S. Farris, MSc, Tara Cowling, MA, MSc, Stephen M. Colgan, PhD, Pin Xiang, PharmD, Louisa Pericleous, PhD, Raina M. Rogoza, MSc, Ming-Hui Tai, MSc, PhD, and Todd Anderson, MD  MedicalResearch.com: What are the main findings? Response:
  • Atherosclerotic cardiovascular disease (ASCVD) remains a significant cause of morbidity and mortality in Canada (and worldwide). Despite the established benefits of treatment with statins, most Canadians fail to achieve dyslipidemia targets (a risk factor for ASCVD).
  • The objective of this study was to examine current treatment patterns of lipid-lowering therapies for the management of low-density lipoprotein cholesterol (LDL-C) in patients with ASCVD.
  • This was a retrospective cohort study conducted using province-wide administrative health data from Alberta, Canada. Datasets used included health services, pharmaceutical, and laboratory data, in addition to the Alberta population registry. The study population consisted of individuals aged 18 years or older diagnosed with ASCVD between 2011-2015, based on International Classification of Diseases (ICD) codes. The cohort was then restricted to individuals with an initial (index) LDL-C measurement after ASCVD diagnosis and at least one year of pre-index data and one year of follow-up data.
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Author Interviews, Biomarkers, Heart Disease, JACC / 17.07.2019

MedicalResearch.com Interview with: Dr. Fred Apple, PhD, DABCC Medical director,Clinical Laboratories, Clinical Chemistry, Clinical and Forensic Toxicology and Point of Care Testing, Hennepin HealthCare Principal investigator, Minneapolis Medical Research Foundation Professor, Department of Laboratory Medicine and Pathology University of Minnesota  MedicalResearch.com: What is the background for this study? Response: Few studies have addressed the role of high sensitivity cardiac troponin (hs-cTn) assays in ruling out myocardial infarction (MI) based on the measurement of a single baseline specimen in US patients presenting to the emergency department with symptoms suggestive of ischemia. Most studies have been published predicated on patients in Europe, Australia, and New Zealand. As US emergency departments have different ordering practices for using cTn in triaging patients, it is important to validate the role of hs-cTn assays in US practices to assure providers of appropriate utilization. We have published two papers using the Abbott ARCHITECT hs-cTnI assay, the same one used outside the US in clinical practice (as this assay is not yet FDA cleared) in a US cohort (clinicialtrials.gov trial: UTROPIA - Sandoval Y, Smith SW, Shah ASV, Anand A, Chapman AR, Love SA, Schulz K, Cao J, Mills NL, Apple FS. Rapid rule-out of acute myocardial injury using a single high-sensitivity cardiac troponin I measurement. Clin Chem 2017;63:369-76. Sandoval Y, Smith SW, Love SA,  Sexter A, Schulz K, Apple FS. Single high-sensitivity cardiac troponin I to rule out myocardial infarction. Am J Med 2017;130:1076-1083) that have shown similar rule out capacities predicated on clinical presentation, a normal ECG and the role of hs-cTnI testing. (more…)
Annals Internal Medicine, Author Interviews, Clots - Coagulation, Heart Disease, Kidney Stones / 16.07.2019

MedicalResearch.com Interview with: Sunil Badve MBBS, MD, DNB, FRACP, PhD, FASN Senior Research Fellow, Renal & Metabolic Division Staff specialist nephrologist | St George Hospital University of New South Wales The George Institute for Global Health Australia MedicalResearch.com: What is the background for this study? Response: Despite the high prevalence of cardiovascular thrombotic events and venous thromboembolism (VTE) in chronic kidney disease (CKD), oral anticoagulant therapy is often underutilized in patients with advanced CKD and dialysis-dependent end-stage kidney disease (ESKD) due to uncertainty of benefit and potential bleeding complications. This comprehensive systematic review was performed to study the benefits and harms of oral anticoagulant therapy in patients with CKD. (more…)
Author Interviews, Genetic Research, Heart Disease, Imperial College, JAMA / 12.07.2019

MedicalResearch.com Interview with: Ben Cordon, PhD NIHR Post-doctoral Academic Clinical Fellow Specialist Registrar training in cardiology  James S. Ware, PhD, MRCP  Reader in Genomic Medicine Group head within the Cardiovascular Genetics & Genomics Unit Imperial College London     MedicalResearch.com: What is the background for this study?   Response: Non-ischaemic dilated cardiomyopathy is a common cause of heart failure and carries the risk of life-threatening ventricular arrhythmia. An implantable cardioverter defibrillator (ICD) can be life-saving in this condition. However, the decision to implant an ICD is not one that can be taken lightly - ICD insertion carries its own risks, such as infection or inappropriate shocks, and our ability to predict who will benefit from a device is currently far from perfect. Genetic sequencing is affordable and widely available and for DCM, like many diseases, it is hoped that genetic stratification may one day help deliver personalised management. In DCM, variants in the Lamin A/C gene for example are known to cause a phenotype with early and severe arrhythmias and, as a result, international guidelines advocate a lower threshold for ICD insertion in these patients. However, Lamin A/C is an infrequent cause of DCM. The commonest known genetic cause of DCM are protein-truncating variants in the gene encoding Titin (TTNtv), accounting for ~15% of DCM cases. We wanted to know if this group had a higher risk of arrhythmia than the general DCM population. Earlier work from our group on this topic found that patients with TTNtv-associated DCM were more likely to have a clinical history of arrhythmia (composite of atrial and ventricular arrhythmia, including NSVT), at the time of their initial DCM diagnosis. But it was unclear if this was driven by ventricular arrhythmia, atrial arrhythmia, or both or if it would translate into a long-term risk of potentially dangerous ventricular arrhythmia of the sort for which an ICD can be life-saving. In another study we analysed a larger cohort of ambulant DCM patients but did not find an increased risk of ventricular arrhythmia – but this was a relatively low-risk group, with comparatively mild symptoms (NHYA I/II heart failure) and moderately impaired LV function. As a result, the overall arrhythmic event rate was low, meaning that the power to detect differences between the TTNtv and non-TTNtv groups was reduced. (more…)
Author Interviews, Blood Pressure - Hypertension, Heart Disease, JAMA / 12.07.2019

MedicalResearch.com Interview with: Dr Kazem Rahimi Deputy Director of the George Centre for Healthcare Innovation James Martin Senior Fellow in Essential Healthcare Honorary Consultant Cardiologist at the John Radcliffe Hospital Deputy Director of the George Institute for Global Health MedicalResearch.com: What is the background for this study? Response: In the last century, we have witnessed a dramatic change in the spectrum of valvular heart disease and the prevalence of this condition has been rapidly increasing, due to population ageing, with poor patient outcomes and high healthcare costs associated with the only effective treatment available, which is valve repair or replacement. However, modifiable risk factors for valvular heart disease remain largely unknown, which limits prevention and treatment. We used a state-of-the-art, gene-based method called Mendelian randomization to determine the causality of the association between systolic blood pressure and risk of valvular heart diseases.  (more…)
Anemia, Author Interviews, Heart Disease, JAMA, Karolinski Institute / 11.07.2019

MedicalResearch.com Interview with: Dr. Niels Grote Beverborg, MD PhD Post-doctoral research fellow Department of experimental cardiology University Medical Center Groningen, Groningen, The Netherlands Integrated CardioMetabolic Center Karolinska Institutet, Stockholm Sweden  MedicalResearch.com: What is the background for this study?   Response: Iron deficiency is very prevalent worldwide and a significant cause of morbidity and mortality, especially in vulnerable populations such as patients with heart failure. It is well known that iron deficiency can be a consequence of an insufficient iron uptake or increased iron loss (termed low iron storage), or of a chronic low inflammatory state (defective iron utilization). However, so far, we had no tools to distinguish these causes from each other in patients and have not been able to assess their potential consequences. (more…)
Author Interviews, Biomarkers, Geriatrics, Heart Disease, JACC / 02.07.2019

MedicalResearch.com Interview with: Martin Bødtker Mortensen, læge PhD Afdelingen for Hjertesygdomme Aarhus Universitetshospital Danmark  MedicalResearch.com: What is the background for this study?   Response: The background for the study is a combination of two things: First, the proportion and number of elderly people 65 years of age or older are increasing fast worldwide. Second, given the dominant impact of age on estimated risk for cardiovascular disease, nearly all elderly individuals eventually become statin eligible under current guidelines – just because of aging alone. Thus, to limit overtreatment of elderly individuals, we wanted to find “negative” risk markers that can be used to identify elderly individuals at truly low cardiovascular risk who are less likely to benefit from statin therapy despite advancing age. (more…)
Author Interviews, Cost of Health Care, Heart Disease, JAMA, Medical Imaging / 17.06.2019

MedicalResearch.com Interview with: Quinn R Pack, MD Assistant Professor of Medicine University of Massachusetts Medical School - Baystate Adjunct Assistant Professor of Medicine Tufts University School of Medicine MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Because echocardiograms are non-invasive, very low risk, and nearly universally available, it is easy to over-use this technique.  In myocardial infarction, echo is also recommended in guidelines. However, in our lab, we frequently find echocardiograms that are ordered purely out of routine, without any thought as to the likelihood of finding an abnormality.   Prior studies also suggested that as many as 70% of echocardiograms provide no additional diagnostic value. When spread across the approximate 600,000 patients in the United States each year, this low diagnostic yield represents an opportunity to reduce costs by reducing echocardiograms.  (more…)
Author Interviews, Heart Disease, JAMA, Surgical Research / 16.06.2019

MedicalResearch.com Interview with: Fausto Biancari, MD, PhD Professor University of Turku and University Oulu, Finland MedicalResearch.com: What is the background for this study? Response: Current data is scarce regarding the short- and midterm benefit of transcatheter aortic valve replacement (TAVR) compared to surgical aortic valve replacement (SAVR) in low-risk patients with severe aortic valve stenosis. MedicalResearch.com: What are the main findings? Response: In this observational study on 2841 low-risk patients with aortic valve stenosis from the Finnish nationwide FinnValve registry, propensity score matching analysis showed similar 30-day and three-year survival after TAVR and SAVR. (more…)
Author Interviews, Heart Disease, JACC / 12.06.2019

MedicalResearch.com Interview with:

J.L. Mehta, MD, PhD

Distinguished Professor of Medicine and Physiology and Biophysics

Stebbins Chair in Cardiology

University of Arkansas for Medical Sciences

Central Arkansas Veterans Healthcare System

Little Rock, AR 72205

MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Aspirin is commonly used for primary prevention of cardiovascular disease events in a variety of subjects around the world. Recent studies, however, show that routine use of aspirin without assessment of risk for cardiovascular disease events may not be appropriate, and may even be harmful.  (more…)
Author Interviews, Clots - Coagulation, Heart Disease, JACC / 11.06.2019

MedicalResearch.com Interview with: Prof. Dr. med. Dirk Sibbing, MHBA, FESC Oberarzt, Medizinische Klinik und Poliklinik I Ludwig-Maximilians-Universität (LMU) München Chairperson ESC Working Group on Thrombosis München, Germany  MedicalResearch.com: What is the background for this consensus statement? What are the main findings that led to these conclusions? Response: The availability of different P2Y12 receptor inhibitors (clopidogrel, prasugrel, ticagrelor) with varying levels of potency has enabled physicians to contemplate individualized treatment concepts. Such concepts may include escalation or de-escalation of P2Y12 inhibiting therapy. Alternative DAPT strategies may be chosen according to the clinical setting (stable coronary artery disease vs. acute coronary syndrome), the stage of the disease (early vs. chronic treatment) and patient risk for ischemic and bleeding complications. As always in clinical medicine, guidance by means of biomarkers or risk scores is always helpful and warranted. Here specifically, a tailored DAPT approach may be potentially guided by platelet function (PFT) or genetic testing. (more…)
Author Interviews, Brigham & Women's - Harvard, Heart Disease, JACC, Lung Cancer, Radiation Therapy / 10.06.2019

MedicalResearch.com Interview with:   Raymond H Mak, MD Assistant Professor of Radiation Oncology Harvard Medical School Radiation Oncology Brigham and Women's Hospital       Katelyn M. Atkins MD PhD Harvard Radiation Oncology Program Dana-Farber Cancer Institute Brigham and Women’s Hospital Boston, Massachusetts     MedicalResearch.com: What is the background for this study? What are the main findings? 
  • Lung cancer remains the leading cause of cancer-related death worldwide and nearly half of patients will require radiation therapy as part of their care.
  • Cardiac toxicity following radiotherapy has been well-studied in breast cancer and lymphomas, however the impact of cardiac toxicity following lung cancer radiotherapy has historically been under-appreciated due to the high risk of lung cancer death.
  • Recent studies highlighting cardiac toxicity following lung cancer radiotherapy have been limited by small numbers of patients and, to our best knowledge, have not included validated cardiac event endpoints defined by the American Heart Association (AHA)/American College of Cardiology (ACC).
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Author Interviews, Cost of Health Care, Heart Disease, JAMA, University of Pennsylvania / 07.06.2019

MedicalResearch.com Interview with: Sameed Khatana, MD, MPH Fellow, Cardiovascular Medicine, Perleman School of Medicine Associate Fellow, Leonard Davis Institute of Health Economics University of Pennsylvania  MedicalResearch.com: What is the background for this study?   Response: The Affordable Care Act (ACA) led to the largest increase in Medicaid coverage since the beginning of the program. However, a number of states decided not to expand eligibility. Studies of prior smaller expansions in Medicaid, such as in individual states, have suggested evidence of improved outcomes associated with Medicaid expansion. Additionally, studies of Medicaid expansion under the ACA of certain health measures such as access to preventive care and medication adherence have suggested some improvements as well. However, there have been no large, population-level studies to examine whether Medicaid expansion under the ACA led to changes in mortality rates. Given, a high burden of cardiovascular risk factors in the uninsured, we examined whether states that had expanded Medicaid had a change in cardiovascular mortality rates after expansion, compared to states that have not expanded Medicaid. (more…)
Author Interviews, Heart Disease, JAMA, Surgical Research / 04.06.2019

MedicalResearch.com Interview with: Rajat Kalra, MBCh Cardiovascular Division University of Minnesota, Minneapolis MedicalResearch.com: What is the background for this study? Response: New-onset atrial fibrillation after aortic valve procedures is thought to occur frequently after aortic valve procedures, such as transcatheter aortic valve implantation (TAVI) and surgical aortic valve replacement (AVR). However, the incidence estimates and implications of this new-onset atrial fibrillation in the contemporary era are unclear. We sought to examine the incidence of atrial fibrillation after aortic valve procedures, compare the incidence between TAVI and AVR, and evaluate the associated morbidity and mortality implications using a ‘big data’ approach. This big data approach employed the National Inpatient Sample and was validated in the New York State Inpatient Database. Both are publicly available datasets that are developed as part of the Healthcare Cost and Utilization Project, a federal-state-industry partnership that is sponsored by the Agency for Healthcare Research and Quality.  (more…)
Author Interviews, Gastrointestinal Disease, Heart Disease, Pharmacology / 31.05.2019

MedicalResearch.com Interview with: Ziyad Al-Aly, MD, FASN Assistant Professor of Medicine Director of the Clinical Epidemiology Center Chief of Research and Education Department of Veterans Affairs Health Care System Saint Louis  MedicalResearch.com: What is the background for this study?   Response: In 2017, we published a paper showing increased risk of death associated with Proton-pump inhibitors (PPI) use. Following the publication of that 2017 paper, several key stakeholders including patients, doctors, research scientists, medical media folks, mainstream media folks, and others asked us: what do these people die from? Did you study causes of death attributable to PPI use? In the study published today, we developed a causal inference framework to answer this question. (more…)
Author Interviews, Heart Disease, Supplements / 31.05.2019

MedicalResearch.com Interview with:

Lu Qi, MD, PhD, FAHA MD, PhD, FAHA HCA Regents Distinguished Chair and Professor Director, Tulane University Obesity Research Center Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans, LA 70112 

MedicalResearch.com: What is the background for this study? Response: There is evidence from previous experimental studies or cross-sectional analyses in humans linking glucosamine and a variety potentially protective effects such as improving lipids, inhibiting inflammation, and mimic a low-carb diet.   (more…)
Author Interviews, Clots - Coagulation, Duke, Genetic Research, Heart Disease, JAMA / 30.05.2019

MedicalResearch.com Interview with: Thomas J. Povsic, MD, PhD Interventional Cardiologist Duke Clinical Research Institute Duke University School of Medicine Durham, North Carolina  MedicalResearch.com: What is the background for this study?  Response: The background for this study is that it is unknown how mandatory reporting of CYP2C19 metabolizer status affects how doctors treat patients or to what degree provision of this information would affect choice of a P2Y12 inhibitor within a clinical trial. As part of the GEMINI-ACS trial, all patients underwent CYP2C19 metabolizer testing.  This trial enrolled patients with a recent acute coronary syndrome and randomized them to aspirin or a low dose of rivaroxaban.  All patients were also to be treated with ticagrelor or clopidogrel, which was at the discretion of the investigator.  Investigators were given information regarding the CYP2C19 metabolizer status about a week after randomization.  Importantly prior to randomization, all investigators were asked how they expected to use this information, and then we followed what they actually did. (more…)