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November 18th, 2013

Cutting-Edge Lifestyle and Behavioral Interventions — Promises and Challenges at AHA.13

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. You can find the previous post here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

It’s bright and early in Dallas, and I’m at the second Late-Breaking Clinical Trial Session at the AHA 2013 Scientific Sessions, “Prevention: From Schools to Countries.”

In this session, Jaime Céspedes presented results from a educational intervention in Columbia that improved healthy eating habits in preschoolers. Nicole Li showed that a village-level salt reduction intervention in rural China reduced urinary sodium excretion but did not significantly affect blood pressure. Michael Ho discussed a low-cost, pharmacist-led adherence intervention consisting of medication reconciliation and phone-call refill reminders that targeted VA patients hospitalized for ACS, which effectively improved medication adherence and showed a trend for slightly improving clinical outcomes.

I was especially excited by a novel approach to effect lifestyle change by leveraging social networks, presented by Eric Ding. It has been observed in recent years that social networks can influence the spread of healthy and unhealthy behaviors. This led to the MICROCLINIC trial, which randomized social clusters of participants in Bell County, KY, to weekly and biweekly classes in settings that encouraged social support and diffusion. The approach effectively achieved losses in weight  (-6.5 lbs, p<0.001) and waist circumference (-1.24 inches, p<0.001) compared to usual care at 10 months, and the results were largely sustained at 6 months. The discussant, Lawrence Appel, noted how much the observed effect was due to intervening on the social-network level. Further explorations into the issues of scalability and adaptability to different cultures are also needed.

Despite these caveats, I still believe we are about to enter into an exciting era in which new technologies and better understanding of factors underpinning human behavior will shift how we approach behavioral and lifestyle change. These advances should also help us meet the challenge of standardizing and implementing interventions in innovative ways to achieve scale. (As an example, my mentor, Karina Davidson, has done extensive work on standardized delivery of depression treatment to post-ACS patients.)

What are your thoughts on innovative behavioral interventions in cardiovascular medicine and ways to implement and sustain them?

November 18th, 2013

Replacement Versus Repair for Mitral Valve Regurgitation

Surgery is thought to be life-saving for people who have ischemic mitral regurgitation, but it is unknown whether surgical repair or surgical replacement of the mitral valve is the better procedure. Repair is thought to result in fewer preoperative deaths and replacement is thought to have better long-term outcomes with a reduced incidence of recurrent mitral regurgitation. In recent years, many surgeons have grown to favor repair.

In a trial presented at the American Heart Association meeting in Dallas and published simultaneously in the New England Journal of Medicine, members of the Cardiothoracic Surgical Trials Network randomized 251 patients with severe ischemic mitral regurgitation to either repair or replacement.

At one year there was no difference in the primary end point, left ventricular end-systolic volume index, between the two groups. The mean change from baseline was -6.6 per square meter of body-surface area in the repair group and -6.8 in the replacement group. Mortality was not significantly different, either: 14.3% in the repair group versus 17.6% in the replacement group (HR 0.79, CI 0.42-1.47, p=0.45). However, moderate or severe recurrence of mitral regurgitation occurred significantly more often in the repair group: 32.6% versus 2.3% (p<0.001).

The authors wrote that their “findings contradict much of the published literature on this topic, which reports several advantages to mitral-valve repair over replacement, including lower operative mortality, improved left ventricular function, and higher rates of long-term survival.” One partial explanation may be that “evolution of valve replacement with chordal sparing may account for the improved results.”

 

November 17th, 2013

The Gaps in the (Guide)Lines?

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. You can find the previous post here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

Along with Reva, I was also at the “Clinical Lipidology” talk this morning. The talk by Dr. Karol Watson titled, “Are there racial/ethnic considerations for statins in primary prevention?” was very instructive. I had not known, for instance, that the ideal dose of statins may be lower in Asians or that the baseline creatine kinase level can be higher in black Americans.

The talk naturally reminded me of the recently released AHA/ACC guideline for cardiovascular risk assessment. I realized, to my chagrin, that the recommendation for using the new Pooled Cohort Equations to predict cardiovascular risk falls into the “may be considered” category for myself, several of my fellow bloggers, and most of the patients I take care of in the Washington Heights neighborhood (who tend to be Hispanic/Dominican).

I think it’s great that the Guidelines frankly acknowledge this, devoting almost a page to the potential for over- and under-estimation of risk for non-white, non-African-American subgroups. But as the U.S. becomes increasingly diverse, are we also falling behind on evidence-based guidelines for a large segment of the U.S. population?

Another way to look at this issue may be to acknowledge the inherent challenges of applying population estimates to individuals. As Joseph Ladapo pointed out recently, we still know very little about how to quantify within-individual uncertainty when estimating risk. So perhaps what we really need is not the perfectly calibrated equation but a better understanding of how to engage our patients under conditions of uncertainty to make the best patient-centered decisions?

What’s your take on the best way to adopt the new guidelines? Share your ideas with the CardioExchange community.

November 17th, 2013

Brainstorming the Abstracts Submission Process at AHA.13

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. You can find the previous post here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

One of the less-known and advertised meeting/sessions at AHA.13, held in one of the smaller rooms, turned out to be an intriguing and provocative gathering.

A few of us were invited to discuss the possibility of improving the abstracts submission process. Some ways that might expedite or improve the process and make submissions an easier endeavor seemed pretty obvious. At the top of the list were things like reducing or eliminating submission fees for early-career individuals and making the submissions website more user-friendly and intuitive. Another idea was to upgrade the submissions website to give details of the requirements more in the tune of “instructions to authors” from the front-tier journals (which could better guide the initial submissions for the “newbies”).

Other ideas were bounced around — having a rewards system for earlier submissions, providing feedback/peer review for subsequently rejected pieces, and ways to ensure that abstracts reflected the final content of the subsequent complete manuscript at publication. Finally, wider attention for interesting sessions or presentations of early career individuals could enhance the current submissions process.

Do you have any insights about these ideas? Do you have other ideas to improve the abstracts submission process?

November 17th, 2013

Clinical Lipidology Becomes a Controversial Field

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. You can find the previous post here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

This morning, I was off to a slightly start and found myself scrambling for a seat at a well-attended session: Clinical Lipidology – Controversies in Cardiovascular Risk Reduction. I should have known that this would be overcrowded in light of the release of the prevention guidelines last week. The new guidelines have been a hot topic of daily conversation in our program amongst the trainees and experienced faculty. The speakers, many of whom helped develop the guidelines, seemed to be the subject of intense interrogation at times, with people lining up at the microphone demanding answers.

Topics were presented in a debate-like format with speakers on pro and con sides. They initially addressed evidence for statins in women and the elderly and race considerations. Karol Watson noted that diversity in most of the early statin trials was limited and that most of what we know about race effects is from subgroup analyses of larger trials that do show that statins confer benefit. When she pointed out lower LDL goal attainment rates and adherence in minority populations, one attendee was quick to note that the new guidelines could cause worse adherence rates in these patients if they are recommended to start on high-dose statins.

A lively debate ensued between Samia Mora and James Otvos over the utility of advanced lipid testing (apoB, LDL particle size). Dr. Otvos argued that in certain patients, LDL-C is not as accurate a marker of risk compared to LDL-P, pointing to an analysis of TNT that showed the patients who obtained the most benefit from high-dose statins were those with metabolic syndrome traits and discordantly high LDL-P. Dr. Mora presented robust evidence that no evidence to date has shown that advanced lipid testing improves CVD risk classification compared to total cholesterol/HDL ratio. Dr. Otvos “conceded,” stating that the benefit is not in the initial risk assessment but helps to identify the source of risk and tailor therapy in those with discordant numbers.

The last debate wasn’t much of a debate — on the treatment of HDL and TG (pro and con), which — to Neil Stone’s surprise (he was arguing the con side) — the pro speaker Alberico Catapano actually seemed to also be arguing the con side, focusing on the disappointing results of AIM HIGH and HPS2-THRIVE.

While half the crowd cleared at the 15-minute Q/A session at the end, those who remained lined up to ask questions about the new guidelines. Many people were concerned about the loss of the traditional treating to a number, and one attendee commented that while it is being promoted as a step forward, it feels like a step backwards.

At the end, the most insightful thought came from Dr. Stone, who compared guideline development to the story of Sisyphus, the Greek myth of the king who was forced to roll a boulder up the hill only to watch it roll down — once the guidelines get to the top, they will roll back down (that is, they will need to be redeveloped).

This session was lively, informative (and overcrowded) but left me with more questions than answers.

The formal information session for the new guidelines is planned for Wednesday – has anyone else attended a session where the guidelines have been discussed or debated? Was the session useful?

November 17th, 2013

What Council Involvement Can Add

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. The current post is written by the comoderator of the Fellowship Training discussions. You can find the preceding post here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

When I became a cardiology fellow and joined AHA, as part of the first application, the website asked me what I wanted my primary council to be. I had no idea what this meant. It then asked what my secondary council was. Again, I was perplexed. I saw the clinical cardiology council and thought that sounded relevant to me and so chose that. As time has evolved, so have my involvement and my understanding of AHA councils, and I have joined the functional genomics and translational biology council and the 3CPR council.

On the Saturday before the Scientific Sessions started, the program committee from the FGTB council established an early career session. The title of my talk was “Tools for Epigenetic Research,” and I built my presentation around epigenetic research in pulmonary hypertension to demonstrate the tools and techniques of the trade. I was nervous about this presentation — trying to condense a field of epigenetics into a 10-minute talk is challenging. However, in the world of academic medicine, being able to explain complex ideas to a broad audience is an important skill, one that I am still working on. As Albert Einstein famously said, “If you can’t explain it simply, you don’t understand it well enough.” All in all, the talk went well, with good questions at the end and constructive feedback from the FGTB leadership committee afterwards.

The council structure within the AHA provides a unique opportunity not only to be involved in the association but also to meet and get to know people who are influential in your field. Navigating what council works for you is difficult, with limited guidance from the AHA to figure out the council that fits your need. But once you find your fit and get involved in council activities, it adds an extra dimension to the AHA Scientific Sessions and valuable career experience.

What has council involvement given you?

November 17th, 2013

Remaking the Heart: Stem Cells, Patches, Scaffolds, and More

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. You can find the previous post here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

Day 2 of AHA Sessions continues to maintain a high bar, with a number of talks on cutting-edge science. Having had a good dose of young investigator talks yesterday, I decided to focus on basic-translational lectures in the realm of regenerative cardiovascular biology this morning.

Drs. Jonathan Epstein, Eric Olson, Piero Anversa, James Willerson, and Joseph Hill gave really great lectures on regenerative cardiovascular biology. Collectively, they covered a number of exciting advances in the field with potential forthcoming therapies falling into broad categories: reprogramming fibroblasts into functional cardiomyocytes, development of a prosthetic heart built from a decellularized heart scaffold, insertion of a reparative “bio-patch,” augmentation of endogenous stem cell regenerative potential, and peri-infarct administration of stem cells. It is clear that a vast amount of groundwork still needs to be done in all of these areas.

It seems to me that the most elegant system – and perhaps the one closest to clinical application (by concept) – is direct reprogramming of fibroblasts into functional, healthy cardiomyocytes. This system bypasses the limitations intrinsic to foreign material insertion and cell delivery, both of which are problematic in a number of ways. For this reason, harnessing the regenerative potential of endogenous cardiac stem cells (or epicardial-derived progenitors, for that matter) are a close runner-up to reprogramming fibroblasts in my opinion.

Do you think that one modality may be better than the others? It would be great to hear everyone’s thoughts.

November 17th, 2013

Early-Career Sessions at AHA 2013: Pearls, Personal Insights, and Powerhouse Presentations

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. You can find the previous post here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

AHA 2013 has got off to a rollicking start! The first day was largely devoted to the early career sessions, where lots of us fellows were walking about starry-eyed and a little overwhelmed at the scale of things, as well as to be walking the same halls as some of the legends of cardiology. There were lots of practical tips for the fellows on how to initiate a career in research and how to be clinically strong.

We faced some hard choices, because attending one session meant missing other concurrent sessions. The quality of the presentations was high, and a few of the presenters struck personal notes. For instance, in a talk titled “The Importance of Good Mentorship” for the early-career Functional Genomics and Translational Biology council, Dr. Emelia Benjamin presented a few anecdotal pearls – and shared that she learnt the art of texting from her mentee John J. Ryan! For me, it’s small human interactions such as these that make the mentor-mentee relationship so special.

There were also powerhouse presentations from the Peripheral Vascular Disease council – including from world leaders in the field – and a workshop for the fellows-in-training. I have attended this session for the past 2 years now. As many programs lack a lot of exposure to PVDs, especially in the initial months of fellowship, it has garnered a lot of interest.

One of the other aspects of the first day was the fact that things appeared well organized, to the point that even the unofficial symposia were summarized in a handout – and the teaching value of such a session became apparent during a presentation on “Cardiovascular Controversies in Diabetes” chaired by Dr. Valentin Fuster. One speaker from Canada outlined the recent preventive guidelines published by the AHA/ACC, while Dr. David Holmes brought to the fore some of the lesser-known issues associated with the FREEDOM trial (on which Dr. Fuster was PI): e.g., poor enrollment of patients (<10% of those screened); a higher risk for stroke with CABG compared with PCI in diabetics with multivessel disease; issues of patient preference in choosing lower immediate stroke risk over long-term mortality benefits. This sparked an interesting conversation between two giants of medicine.

Overall, an extremely encouraging and interesting prelude to what I hope will be a fantastic meeting, with lots of education and information for cardiologists in all stages of their careers.

What’s your take on the issues framed in the early sessions at AHA? Share them with the CardioExchange community.

November 16th, 2013

Advice for Fellows-in-Training: Focus, Persistence Are Keys

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. You can find the previous post here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

This year, unlike the last time I was at AHA, I arrived a day early and attended some sessions that I hadn’t been able to in the past: the fellows-in-training early-career sessions. The most memorable quote from the sessions came from Robert Califf —”A research career is more like a game of basketball than a game of golf” — emphasizing the importance of a team approach and collaboration with mentors in advancing your career goals.

There were many pearls from these sessions for those interested in pursuing an academic career, and some of the best advice came from an afternoon panel. Robert Harrington encouraged fellows to think outside the box in an era of dwindling NIH funding and to look for nontraditional sources of funding such as foundation grants. He emphasized that we need to rethink how research is funded altogether — pointing to the TASTE trial done in Sweden on aspiration thrombectomy, which was done with minimal funding, compared to multi-million-dollar randomized controlled trials.

Sanjiv Shah encouraged fellows to focus on their specific interests, not to overcommit to too many projects and papers (emphasizing that two focused papers are better than ten that are all over the place), and to form relationships with mentors and sponsors early.

Overall, the most common theme emphasized was that of persistence — learning to never give up in the face of rejection, as grant writing can be a difficult and overwhelming process with an often disappointing rejection rate.

Today was an informative day for fellows in all stages – and even for young faculty early in their career, important advice in the changing landscape.

What other pearls of wisdom did you obtain from these sessions, and how did you feel leaving them?

November 16th, 2013

Becoming a Cardiovascular Investigator – Treading in Deep Waters, or a Sure Shot Toward a Successful Future?

Several Cardiology Fellows who are attending AHA.13 in Dallas this week are blogging for CardioExchange. The Fellows include Vimal RamjeeSiqin YeSeth MartinReva Balakrishnan, and  Saurav Chatterjee. You can find the previous post here and the next one here. For more of our AHA.13 coverage of late-breaking clinical trials, interviews with the authors of the most important research, and blogs from our fellows on the most interesting presentations at the meeting, check out our AHA.13 Headquarters.

Sifting through pages of exceptional programming in the days prior to AHA Scientific Sessions, I found myself drawn to the Saturday sessions for young trainees aspiring to become successful investigators in cardiovascular medicine. Thanks to the AHA for reorganizing their sessions into distinct tracks, which made finding programs of interest quite easy.

Topics including “Surviving Single-Digit Funding Levels,” “What You Need to Know if You Are Looking for Funding,” and “How to Successfully Prepare a K99/R00 Award” were a few of the many insightful lectures given today for young investigators. Leaders in our field, including Drs. Mariell Jessup, Joseph Wu, Robert Harrington, Kiran Musunuru, and Robert Califf, set the stage to collectively answer the golden question that sits uneasily with all of us as we contemplate our career paths: Is it possible to succeed as a young investigator in the current funding climate?

Dr. Gail Peterson nicely outlined the barriers we face given a decrease of 5.5% in overall NIH funding this year due to sequestration. To my surprise, however, she pointed out that K award funding and immediate venues affecting young investigators have been protected in a deliberate fashion by our leaders. This was very reassuring to learn and was in keeping with the theme of pro-young investigator talks over the remainder of the day.

Drs. Joseph Wu and Kiran Musunuru gave fascinating lectures on just how much has yet to be done. The sheer amount of investigative opportunity, spanning from basic to translational and clinical assessments, was described as “lifetimes and lifetimes” abound, and I have to say that I absolutely agree. The birth of “-omics” has opened venues with exponentially growing volumes of data that make bioinformatics a discipline that will truly become its own. Findings generated in this realm will inevitably come full circle to re-inform and focus reductionist basic science experiments with a new vigor. On all ends, it is clear that science is truly booming.

That being said, Drs. Donald Menick, Maria Kontaridis, Asa Gustafsson, and Burns Blaxall walked young investigators through essential pearls of the trade, which were quite informative. They noted that while upholding the highest standard in our writing, study design, and science is of utmost importance, other key qualities of successful investigators include true passion, perseverance, and humility. All admitted to frustrations that come with the trade – rejected grants, low or unscorable NIH summary sheets, poor-performing lab personnel, declined papers – but offered reassurance that these are the very instances that allow for constructive learning and growth as a scientist.

All in all, I have to say that it was a really key day for young investigators. The day ended with a great reception for early-career trainees, and there were a good number of faculty present as well. It is clear that while funding may be down, there is no shortage of investigative opportunities; moreover, our senior leaders are doing what they can to protect crucial first steps toward that direction by maintaining K award funding and YI venues, and by coming out to support us. I look forward to hearing what other FITs thought, and to learning whether others share my outlook of cautious optimism as they move forward with their careers in cardiovascular investigation.

What do you think about the prospects for researchers given funding challenges?