MedicalResearch.com Interview with:
Mintu Turakhia, MD MAS, FHRS FACC FAHA
Assistant Professor of Medicine and (by courtesy) of Health Research & Policy
Stanford University School of Medicine
Director of Cardiac Electrophysiology
Core Investigator, Center for Innovation to Implementation
VA Palo Alto Healthcare System
Medical Research: What are the main findings of the study
Dr. Turakhia: We found that the reported success rate of a study correlated with the number of times the study was cited in the literature, even after adjustment for a wide range of factors.
MedicalResearch.com Interview with:
Sumeet S. Chugh MD
Pauline and Harold Price Endowed Professor
Associate Director, the Heart Institute
Section Chief, Clinical Cardiac Electrophysiology
Cedars-Sinai Medical Center, Los Angeles, CA
Medical Research: What are the main findings of the study?
Dr. Chugh: Our study, conducted in the community, showed that there are unique alterations in sex hormone levels identified among patients who have sudden cardiac arrest. Male victims have lower testosterone and both males and females have higher estrogren levels.
MedicalResearch.com Interview with:
Dr Weiguo Zhang, MD PhD
Cardiovascular and Neurological Institute
6771 San Fernando,
Irving, TX 75039, USA
Medical Research: What are the main findings of the study?
Prof. Zhang: Higher heart rate has emerged as a cardiovascular risk factor and is associated with higher mortality rate. However the mechanistic link between heart rate and mortality outcome in population has been missing. The main findings of the present study in a relatively large population are two-fold: Firstly, there is a strong and positive association between resting heart rate and metabolic syndrome, which is defined when an adult has 3 of the following: obesity (waist circumference ≥90 cm for men or ≥80 for women); hypertriglyceridemia (triglycerides ≥1.7 mmol/L); low plasma level of high-density lipoprotein <1.03 mmol/L for men or <1.30 mmol/L for women); hypertension (systolic blood pressure/ diastolic blood pressure≥130/85 mmHg or current use of antihypertensive medications); hyperglycemia (fast blood glucose ≥5.6 mmol/L or previously diagnosed type 2 diabetes or current use of hypoglycaemic agents or insulin). Secondly and more importantly, those without metabolic syndrome but with higher resting heart rate will have greater risk in developing metabolic syndrome in the near future. As such, the findings from both cross-sectional and longitudinal studies provide evidence that resting heart rate is an independent risk factor for existing metabolic syndrome and a powerful predictor for its future incidence.
MedicalResearch.com Interview with:
Martin Huth Ruwald, MD, PhD
Post doctoral research fellow
Heart Research Follow-up Program
University of Rochester Medical Center
Rochester, NY, US
Medical Research: What are the main findings of the study?
Dr. Ruwald: A high percentage of biventricular pacing is required for optimal outcome in patients treated with cardiac resynchronization therapy (CRT), but the influence of ectopic beats on the success of biventricular pacing has not been well established.
We found that patients with increasing amount of ectopic beats (the ectopic burden) (≥0.1%) were more likely to achieve low biventricular pacing <97% and had higher risk of heart failure or death and ventricular arrhythmias. Similarly the study identified patients with a very low amount of ectopic beats, less than 1 in 1000, who are very likely to obtain high biventricular pacing and who have very low risk of adverse outcomes.
MedicalResearch.com: Interview with:
Jean-Philippe Couderc, PhD, MBA
Associate Professor of Medicine
Research Associate professor of Electrical and Computer Engineering
University of Rochester, NY
Heart Research Follow-Up Program - Cardiology Department
Rochester, New-York 14642
Medical Research: What are the main findings of the study?
Dr. Couderc: We have developed a unique technology which enables any individual to evaluate if he/she suffers from atrial fibrillation (AF) by using a simple video camera (webcam). There are approximately 3.2 million people with AF in the US, and estimated 30 million people in the world. It has been shown that around 30% of people suffering from AF are not aware of their disease, this form is called 'silent' atrial fibrillation. AF is a progressive disease leading to stroke and heart failure. It results in significant morbidity and mortality. The total cost of AF in the US is estimated to $7billion and 75% of this cost is associated with patient hospitalization.
MedicalResearch.com Interview with:
Gilles Montalescot M.D., Ph.D.
Professor of Cardiology
University of Paris VI; Director, Cardiac Care Unit
Institute of Cardiology, Pitié-Salpêtrière University Hospital
Paris, France
Medical Research: What are the main findings of the study?
Dr. Montalescot : Among the 1862 patients with ongoing STEMI who were enrolled in the ATLANTIC study, we found no difference between those randomized to pre-hospital (in-ambulance) ticagrelor 180 mg and those randomized to in-hospital (in-catheterization laboratory) ticagrelor 180 mg in terms of either pre-PCI ST-segment elevation resolution (≥70%) or pre-PCI TIMI 3 flow in the culprit artery, which were the co-primary endpoints. There was also no difference between the groups in terms of major adverse cardiovascular events at 30 days, with the exception that rates of definite stent thrombosis were lower in the pre-hospital ticagrelor group than in the in-hospital group, both in the first 24 hours (0% versus 0.8%, p= 0.008) and at 30 days (0.2% versus 1.2%, p = 0.02). The safety of pre-hospital ticagrelor did not appear to be an issue, since the incidence of non-CABG-related major bleeding was low and similar in both treatment groups, whichever bleeding definition was used (PLATO, TIMI, STEEPLE, GUSTO, ISTH or BARC).
MedicalResearch.com Interview with:
Massimo Imazio on behalf of the COPPS-2 Investigators
Massimo Imazio. MD, FESC
Dipartimento di Cardiologia/Cardiology Department
Maria Vittoria Hospital and University of Torino
Torino, Italia
Medical Research: What is the background for this investigation?
Dr. Imazio: Post-pericardiotomy syndrome, post-operative atrial fibrillation (AF), and post-operative effusions may be responsible for increased morbidity and healthcare costs after cardiac surgery. Postoperative use of colchicine prevented these complications in a single trial (the COPPS trial published on EHJ in 2010).
Here all events occurred within 3 months and colchicine was given after cardiac surgery starting from postoperative day 3 for 1 month. However most postoperative AF events are reported in the first 3 days and thus pre-treatment with colchicine may give better outcomes. Thus we performed the COPPS-2 giving colchicine 48 to 72 hours before surgery for 1 month without a loading dose and weight adjusted doses (i.e. 0.5 mg twice daily for patients >70kg or 0.5 mg once for patients <70Kg) in order to improve patients compliance.The Colchicine for Prevention of the Post-pericardiotomy Syndrome and post-operative atrial fibrillation (COPPS-2 trial) is an investigator-initiated, double-blind, placebo-controlled, randomized clinical trial. A total of 360 consecutive candidates for cardiac surgery, 180 for each arm, were enrolled in 11 Italian centers between March 2012 and March 2014. Main exclusion criteria were absence of sinus rhythm at enrollment, cardiac transplantation, and contraindications to .
MedicalResearch.com Interview with:
John J.V. McMurray, M.D
Professor of Medical Cardiology
British Heart Foundation,
Cardiovascular Research Centre
University of Glasgow,
Glasgow, United Kingdom
Medical Research: What are the main findings of the study?
Dr. McMurray: That compared to an evidence-based dose of an evidence-based ACE inhibitor (enalapril 10 mg bid), LCZ696 reduced the primary composite outcome of cardiovascular death or heart failure hospitalization by 20%, both the components of that composite and all-cause mortality (the latter by 16%) - all reductions are highly statistically significant and clinically important. LCZ696 treated patients also reported fewer symptoms and physical limitations due to heart failure. We think this is a remarkable finding - to beat what has been the gold-standard, cornerstone, therapy for around 25 years. The findings show conclusively that adding neprilysin inhibition to renin-angiotensin system blockade is superior to renin-angiotensin system blockade alone in patients with heart failure and reduced ejection fraction .
MedicalResearch.com Interview with:
Dr. Frank B. Hu
Department of Nutrition
Harvard School of Public Health
Boston, MA
Medical Research: What are the main findings of the study?
Dr. Hu: in this study among approximately 5000 patients with type 2 diabetes followed for up to 10 years, longer duration of sulfonylurea therapy was associated with a higher risk of coronary heart disease. The continuous sulfonylurea therapy for 10 years was associated with almost two times greater risk of coronary heart disease compared with nonusers. However, given the observational nature of the study, we cannot make causal inference from these findings.
MedicalResearch.com Interview with
Prof Richard McManus MA PhD FRCGP
NIHR School for Primary Care Research,
Nuffield Department of Primary Care Health
Sciences, University of Oxford,
Oxford, Oxfordshire United Kingdom
Medical Research: What are the main findings of the study?
Prof. McManus: The TASMIN-SR clinical trial followed 552 patients with an average age of 70 and high blood pressure with pre-existing cardiovascular disease, diabetes or chronic kidney disease.
After training in how to self-monitor blood pressuring using a readily available device, patients took readings twice each morning for the first week of each month, and following an individualised management plan were able to request additional medication from their general practitioner without the need for consultation.
At the end of the study, patients who self-managed had significantly lower blood pressure (by 9.2 / 3.4 mmHg) than those who were visiting their GP for blood pressure monitoring, which would be expected to lower stroke risk by around 30% if sustained.
MedicalResearch.com Interview with
Steven M. Bradley, MD, MPH
Veterans Affairs, Eastern Colorado Health CareSystem
Denver, Colorado
Medical Research: What are the main findings of the study?
Dr. Bradley: In 539 hospitals participating in the CathPCI Registry that performed elective coronary angiography on more than 500,000 patients, 22% of patients were asymptomatic at the time of coronary angiography. We observed marked variation in the hospital rate of angiography performed in asymptomatic patients, ranging from 0.2% to 66.5%, suggesting broad variation in the quality of patient selection for coronary angiography across hospitals. Additionally, hospitals with higher rates of asymptomatic patients at diagnostic angiography also had higher rates of inappropriate PCI, due to greater use of PCI in asymptomatic patients. These findings suggest that patient selection for diagnostic angiography is associated with the quality of patient selection for PCI as determined by Appropriate Use Criteria. By addressing patient selection upstream of the catheterization laboratory, we may improve on the optimal use of both angiography and PCI.
MedicalResearch Interview with:
Michael B. Rothberg, MD, MPH
Department of Internal Medicine
Medicine Institute, Vice Chair for Research
Cleveland Clinic, Cleveland, Ohio
Medical Research: What are the main findings of the study?
Dr. Rothberg: In this randomized study we found that when people are presented with no information about the benefits of elective PCI, most assumed that it would prevent a heart attack. Unfortunately, this is incorrect, so people may choose to have the procedure based on false information. We also found that simply telling them that PCI would not prevent a heart attack successfully dispelled this belief for most, but not all, participants. Explaining why PCI does not prevent heart attacks in this circumstance was the most effective way to change people's beliefs. We also found that most people were willing to take medications, but when they were told that PCI does not prevent heart attacks, they were more likely to agree to medication.
MedicalResearch.com Interview with:
Antonis Hatzopoulos, PhD, FAHA
Associate Professor of Medicine- Division of Cardiovascular Medicine
Associate Professor of Cell & Developmental Biology
Vanderbilt Center for Stem Cell Biology
Vanderbilt University
Nashville, TN 37232-6300
Medical Research: What are the main findings of the study?
Dr. Hatzopoulos: Using cell tracking in the normal adult mouse heart, we found that endothelial cells can function as cardiac stem cells to generate new heart muscle. Our results show that besides heart muscle, endothelial cells produce quiescent and proliferating cardiac progenitor cells that reside in the media and adventitia layers of the coronary arteries, respectively.
MedicalResearch.com Interview with
Marco Perez, MD
Instructor in Cardiovascular Medicine
Director, Inherited Cardiac Arrhythmia Clinic
Stanford University Medical Center
Cardiac Electrophysiology & Arrhythmia Service
Stanford, CA 94305-5233
Medical Research: What are the main findings of the study?
Dr. Perez: It was already known that obesity is an important risk factor for atrial fibrillation. We studied over 80,000 postmenopausal women enrolled in the Women’s Health Initiative who were followed for the onset of atrial fibrillation, an irregular heart rhythm associated with stroke and death. We found that those who exercised more than 9 MET-hours/week (equivalent to a brisk walk of 30 minutes six days a week) were 10% less likely to get atrial fibrillation than those who were sedentary. Importantly, the more obese the women were, the more they benefited from the exercise in terms of atrial fibrillation risk reduction.
MedicalResearch.com Interview with:
Gregg C. Fonarow, MD, FACC, FAHA
Eliot Corday Professor of Cardiovascular Medicine and Science
Director, Ahmanson-UCLA Cardiomyopathy Center
Co-Chief of Clinical Cardiology, UCLA Division of Cardiology
Co-Director, UCLA Preventative Cardiology Program
David Geffen School of Medicine at UCLA
Los Angeles, CA, 90095-1679
Medical Research: What are the main findings of the study?
Dr. Fonarow: Drawing on data from the Registry to Improve the Use of Evidence-Based Heart Failure Therapies in the Outpatient Setting (IMPROVE HF), 15,177 heart failure patients were followed over two years to measure the benefits of implantable device therapy on survival in community practice settings. The study demonstrated that ICD device therapy reduced the likelihood of death during the two-year period by 36 percent, with no significant differences by race or ethnicity. The study also demonstrated a 45 percent reduction in mortality during the two-year period with CRT therapy, again without any significant differences device benefit by race or ethnicity.
MedicalResearch.com Interview with:
Ryan T. Borne MD
University of Colorado Anschutz Medical Campus
Division of Cardiology
Aurora, CO 80045
Medical Research: What are the main findings of the study?
Dr. Borne: Using the NCDR ICD Registry, we identified Medicare beneficiaries aged 65 years and older with low left ventricular ejection fraction (≤ 35%) who underwent primary prevention implantable cardioverter defibrillator implantation, including those receiving cardiac resynchronization therapy with defibrillator, between 2006 and 2010 who could be matched to Medicare claims. We found that while there were modest changes in the patient characteristics undergoing ICD implantation, there were significant improvements over time in mid-term outcomes including 6-month mortality, re-hospitalization, and device-related complications.
MedicalResearch.com Interview with:
Dr. Juhani Airaksinen, MD, PhD
Heart Center, Turku University Hospital
Turku, Finland
Medical Research: What are the main findings of the study?
Dr. Airaksinen: The main result of our study is that the risk of thromboembolic complications in general was low (0.7%). However the risk rose to a 3.7-fold level when the delay to cardioversion exceeded 12 hours. The time-dependent increase in the risk of thromboembolic complications was more pronounced in female patients. In addition, as expected, old age, heart failure and diabetes were the other significant predictors of postcardioversion thromboembolic complications.
MedicalResearch.com Interview with:
Susan Cheng MD
Cardiovascular Division, Brigham and Women's Hospital
Boston, MA 02115
Medical Research: What are the main findings of the study?
Dr. Cheng: We've known for some time that smoking, high cholesterol, high blood pressure, diabetes, and obesity all contribute to a person’s risk of being at risk for heart disease. The goal of our study was to look back over the last two decades and see how we've been doing in reducing the impact of these major cardiovascular risk factors on the actual risk for developing heart and vascular disease. We found that, not surprisingly, we've been doing generally better over time at lowering the overall impact of some risk factors such as smoking and high cholesterol. On the other hand, the impact of hypertension and diabetes has been high and has remained high over time.
MedicalResearch.com Interview with:
Professeur Philippe Gabriel Steg
Département de Cardiologie
Hôpital Bichat, Assistance Publique - Hôpitaux de Paris
Université Paris-Diderot, Sorbonne Paris Cité, Paris, France
Medical Research: What are the main findings of this study?
Prof. Philippe Steg: