<?xml version="1.0" encoding="utf-8"?>
<recommendedContent xmlns="http://api.mspoke.com">
    <recommendedItem id="20100101_19_443"
                     title="Evidence-Based Treatment Improves Older Stroke Victims&apos; Chances (CME/CE)"
                     score="0.011"
                     href="http://www.medpagetoday.com/Cardiology/Strokes/tb/18360?impressionId=1265766068425"
                     
      &lt;p&gt;Older stroke patients remain at higher risk for adverse outcomes than younger ones, but the gap has narrowed with wider implementation of evidence-based guidelines, researchers say.&lt;/p&gt;
&lt;p&gt;More than 10% of stroke patients over 80 died in the hospital, compared with 3% of those under age 50, Gregg C. Fonarow, MD, of the University of California Los Angeles, and colleagues reported online in &lt;em&gt;Circulation&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;But overall use of guideline-recommended therapies improved substantially in older patients from 2003 to 2009, particularly for patients over 90, they said.&lt;/p&gt;
&lt;p&gt;During that time, several hospitals and stroke centers have adopted &quot;Get with the Guidelines,&quot; an intervention to apply evidence-based guidelines to care. Adopters have seen &quot;substantial improvements ... in performance measures for ischemic stroke patients, including pharmacological and nonpharmacological management in each age group,&quot; the researchers wrote.&lt;/p&gt;
&lt;p&gt;Before launching the initiative in 2003, studies generally showed lower use of guideline-recommended therapy and worse outcomes in older stroke patients.&lt;/p&gt;
&lt;p&gt;To assess changes since initiative started, the researchers analyzed more than 502,036 ischemic stroke admissions to 1,256 hospitals participating in the guidelines program between 2003 and 2009. Mean patient age was 71, and 52.5% were women.&lt;/p&gt;
&lt;p&gt;They found that performance on most evidence-based measures was lower in older patients  --  those ages 80 and up  --  compared with younger patients.&lt;/p&gt;
&lt;p&gt;The largest differences were seen in the proportion of eligible patients who received intravenous tissue plasminogen activator (tPA) treatments (51.1% for older patients versus 61.6% for those under 50, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001).&lt;/p&gt;
&lt;p&gt;Providers were also less likely to treat older stroke patients with lipid-lowering therapies than younger patients (54.2% versus 71.7%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001).&lt;/p&gt;
&lt;p&gt;The smallest differences involved antithrombotic therapy within 48 hours of admission and at discharge.&lt;/p&gt;
&lt;p&gt;In terms of outcomes, older patients had a significantly higher inhospital mortality rate (10.3% versus 3%), and they were less likely to be discharged home. Rather, they were more likely to be discharged to a skilled nursing facility (42.1% versus 5.3%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001) or hospice (12% versus 0.5%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001).&lt;/p&gt;
&lt;p&gt;With each 10-year age increase, patients with ischemic stroke were 31% less likely to be discharged home and 27% more likely to die in the hospital.&lt;/p&gt;
&lt;p&gt;But the researchers said that, generally, the use of guideline-recommended therapies improved substantially in older patients from 2003 to 2009.&lt;/p&gt;
&lt;p&gt;In those ages 90 and older, use of intravenous tPA increased threefold, from 20.4% in 2003 to 62.4% in 2009. And use of lipid lowering therapy increased from 15.6% in 2003 to 71.7%.&lt;/p&gt;
&lt;p&gt;The researchers wrote that by 2009, &quot;many of the age-related differences in care had narrowed or were eliminated.&quot;&lt;/p&gt;
&lt;p&gt;They cautioned, however, that there could be residual confounding by unmeasured factors. For example, physicians may be uncertain about risks versus benefits in treating older patients who are under-represented in RCTs.&lt;/p&gt;
&lt;p&gt;The authors noted that their study was limited by its reliance on the accuracy and completeness of medical records.&lt;/p&gt;
&lt;p&gt;Also, they noted, the &quot;Get with the Guidelines&quot; program tends to attract larger teaching hospitals, which already have a &quot;strong interest in stroke care and quality improvement,&quot; and thus the findings may not be generalizable.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The &quot;Get with the Guidelines&quot; program is supported by the American Heart Association and the American Stroke Association, as well as grants from Pfizer and the Merck-Schering Plough Partnership.&lt;/p&gt;&lt;p&gt;Fonarow reported relationships with Pfizer, Merck/Schering Plough, BMS/Sanofi.&lt;/p&gt;&lt;p&gt;Co-authors reported relationships with Boehringer Ingelheim, Ferrer, CoAxia, Talecris, Concentric Medical, and Cygnis.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_407"
                     title="ICU Catheter Infections Can Be Virtually Eliminated (CME/CE)"
                     score="0.01"
                     href="http://www.medpagetoday.com/CriticalCare/InfectionControl/tb/18308?impressionId=1265766068425"
                     
      Catheter-related infections aren&apos;t inevitable in the ICU, according to a quality initiative that maintained rates at nearly zero for three years in Michigan hospitals.&lt;br&gt;
&lt;br&gt;The maintenance phase, after initial implementation of low-tech measures such as handwashing and removal of unneeded catheters, saw no rebound in catheter-related infections, Peter J. Pronovost, MD, PhD, of Johns Hopkins, and colleagues reported online in &lt;em&gt;BMJ&lt;/em&gt;.&lt;br&gt;
&lt;br&gt;The first 18 months of their &lt;a href=&quot;http://www.medpagetoday.com/InfectiousDisease/GeneralInfectiousDisease/4771&quot; mce_href=&quot;http://www.medpagetoday.com/InfectiousDisease/GeneralInfectiousDisease/4771&quot; target=&quot;_blank&quot;&gt;Keystone ICU initiative&lt;/a&gt; dropped catheter-related interventions from a mean of 7.7 and median of 2.2 per 1,000 catheter days down to 1.3 and 0, respectively.&lt;br&gt;
&lt;br&gt;At the 36 month mark, infection rates remained almost nil, at a mean of 1.1 and median of 0 per 1,000 catheter days.&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&quot;For the most part, hospitals view these infections as inevitable, as the cost of doing business, that patients are too sick, that these can&apos;t be prevented,&quot; Pronovost told &lt;em&gt;MedPage Today&lt;/em&gt;. &quot;That&apos;s just not true.&quot;&lt;/p&gt;
&lt;p&gt;Catheter-related infections are the number one cause of preventable death in hospitals and ICUs, ahead of even ventilator-related pneumonia, he noted.&lt;/p&gt;
&lt;p&gt;The changes seen at the 90 Michigan ICUs that stayed with the catheter-related infection initiative were impressive, representing one of the largest and longest improvements the field has seen.&lt;/p&gt;
&lt;p&gt;Often, quality initiatives fail on durability after the study funding and resources disappear, and hospitals are left on their own, Pronovost noted.&lt;/p&gt;
&lt;p&gt;&quot;If you push you might get some effect, but then you stop pushing  --  in other words the external control goes away  --  and the performance goes right back down,&quot; he said in an interview. &quot;It can&apos;t just be the stick that drives it.&quot;&lt;/p&gt;
&lt;p&gt;The intervention started with 103 ICUs that implemented strategies to reduce rates of catheter-related bloodstream infections rates over 18 months, with measurement and feedback of infection rates.&lt;/p&gt;
&lt;p&gt;The strategies aimed at improving execution of five evidence-based recommendations, as follows: &lt;ul&gt; &lt;li&gt;Hand washing before insertion of the catheter&lt;/li&gt; &lt;li&gt;Using gowns and full barrier precautions at catheter insertion&lt;/li&gt; &lt;li&gt;Cleaning the skin with chlorhexidine before catheter insertion&lt;/li&gt; &lt;li&gt;Avoiding the femoral site when possible&lt;/li&gt; &lt;li&gt;Removing unnecessary catheters&lt;/li&gt; &lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Then, over the subsequent 18-month maintenance period, ICU teams were instructed to integrate this intervention into staff orientation, to collect monthly data from hospital infection control staff, and to report infection rates to physicians and others.&lt;/p&gt;
&lt;p&gt;Along with the sustained reduction in overall catheter-related infections, the researchers found a prolonged reduction in bloodstream infections that was significant during all study periods, compared to baseline.&lt;/p&gt;
&lt;p&gt;Rates decreased from a mean of 7.7 and median 2.7 of per 1,000 catheter days at baseline to 1.3 and 0, respectively, at 16 to 18 months after implementation. They remained at 1.1 and 0 at months 34 to 36 (-1% versus 18 months, 95% CI -9% to +7%).&lt;/p&gt;
&lt;p&gt;ICU teams interviewed attributed the continuously low rates to five factors: &lt;ul&gt; &lt;li&gt;Continued feedback on infection data&lt;/li&gt; &lt;li&gt;Improvements in safety culture as part of the project&lt;/li&gt; &lt;li&gt;An &quot;unremitting belief in the preventability of bloodstream infections&quot;&lt;/li&gt; &lt;li&gt;Involvement of senior leaders&lt;/li&gt; &lt;li&gt;A noncompetitive, shared goal to reduce infection rates throughout the state&lt;/li&gt; &lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Of these, Pronovost called culture change in the ICUs the key factor to sustainability, although the researchers cautioned that which aspects contributed were not formally evaluated.&lt;/p&gt;
&lt;p&gt;They said they could not determine the impact incentive payments from Blue Cross Blue Shield of Michigan to hospitals that continued their participation  --  payments that were based on performance thresholds in subsequent years.&lt;/p&gt;
&lt;p&gt;Pronovost&apos;s team is now working to implement the quality initiative state-by-state nationwide, supported by the Agency for Healthcare Research and Technology.&lt;/p&gt;
&lt;p&gt;&quot;It seems absurd that this wouldn&apos;t be in every hospital in the country,&quot; he said in an interview. &quot;It&apos;s worked on a large scale, it&apos;s exceedingly cheap, there&apos;s no fancy technology.&quot;&lt;/p&gt;
&lt;p&gt;Success isn&apos;t only for community hospitals, Pronovost emphasized.&lt;/p&gt;
&lt;p&gt;Large, often academic, medical centers frequently express the conviction that their sicker, more complex ICU population wouldn&apos;t produce the same results, that their infections truly are inevitable, he said.&lt;/p&gt;
&lt;p&gt;&quot;To them I say, Not so,&quot; he told &lt;em&gt;MedPage Today&lt;/em&gt;. &quot;We have shown at Johns Hopkins, at the University of Michigan, at Pittsburgh, using a similar but different approach, at Tufts  --  many large academic medical centers have had dramatic reductions of these infections.&quot;&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The project was supported, for the period from October 2003 to September 2005, by the Agency for Healthcare Research and Quality and the Michigan Health &amp;amp; Hospital Association.&lt;/p&gt;&lt;p&gt;Pronovost and a co-author reported receiving received lecture fees from various healthcare organizations and grant support from the Agency for Healthcare Research and Quality, the Robert Wood Johnson Foundation, the National Patient Safety Agency, and the World Health Organization to study and improve quality of care, including catheter-related bloodstream infections.&lt;/p&gt;&lt;p&gt;Co-authors reported conflicts of interest with government agencies, Cubist, Astellas, Merck, Forrest, Cadence, the Robert Wood Johnson Foundation, Lilly, Edward Life Sciences, and Sage.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_388"
                     title="Laser Cardiac Lead Extraction Gets Better Grades (CME/CE)"
                     score="0.009"
                     href="http://www.medpagetoday.com/Cardiology/Arrhythmias/tb/18280?impressionId=1265766068425"
                     
      &lt;p&gt;Laser-assisted extraction of implanted heart device leads appears to have become safer and more successful in recent years, researchers said.&lt;/p&gt;
&lt;p&gt;A retrospective multicenter series suggested a 97.7% clinical success rate and complete lead removal in 96.5% of cases attempted with the newer iteration of transvenous excimer laser extraction tools.&lt;/p&gt;
&lt;p&gt;Major procedural complication rates were low at 1.4% with 0.28% procedure-related deaths, Oussama M. Wazni, of the Cleveland Clinic, and colleagues reported in the Feb. 9 issue of the &lt;em&gt;Journal of the American College of Cardiology&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;&quot;Since the initially reported experiences, which employed earlier editions of the extraction tools and largely represented the learning curve with laser extraction techniques, this consecutive patient experience represents the mature contemporary practice in multiple centers with varying degrees of experience,&quot; the researchers wrote.&lt;/p&gt;
&lt;p&gt;These results suggested improvements, they said, compared with the original PLEXES trial using the first version of a laser sheath for lead extraction, which showed 94% procedural success and 1.96% procedure-related major complications.&lt;/p&gt;
&lt;p&gt;Another study of the total initial U.S. experience of laser lead extraction indicated 90% procedural success with a 1.9% major complication rate and an inhospital death rate of 0.8%.&lt;/p&gt;
&lt;p&gt;The early, relatively small trials and voluntary registry results upon which the perceptions of lead extraction safety and effectiveness were based had painted a &lt;a href=&quot;http://www.medpagetoday.com/Cardiology/Arrhythmias/3162&quot; mce_href=&quot;http://www.medpagetoday.com/Cardiology/Arrhythmias/3162&quot; target=&quot;_blank&quot;&gt;picture&lt;/a&gt; that limited it to patients with life-threatening situations, Wazni&apos;s group explained.&lt;/p&gt;
&lt;p&gt;It used to be felt that removing infected leads was dangerous because of the potential for infected debris to spread through the bloodstream and become lodged in the lungs, commented Ann Bolger, MD, of San Francisco General Hospital and a spokesperson for the American Heart Association.&lt;/p&gt;
&lt;p&gt;&quot;Because there are just more and more patients all the time with these devices and because we went through a phase when we might not have always retrieved wires that were no longer functional completely, there are patients who have what they call abandoned leads,&quot; she said in an interview.&lt;/p&gt;
&lt;p&gt;AHA guidelines released last month now recommend removal of all hardware even in the absence of symptoms for patients with more than a superficial or incisional infection at the pocket site, suggesting percutaneous extraction as the preferred method despite significant risks.&lt;/p&gt;
&lt;p&gt;The AHA agreed with guidelines from the Heart Rhythm Society released last spring cautioning that only experienced centers should do extractions. The HRS went so far as to set &lt;a href=&quot;http://www.medpagetoday.com/MeetingCoverage/HRS/14255&quot; mce_href=&quot;http://www.medpagetoday.com/MeetingCoverage/HRS/14255&quot; target=&quot;_blank&quot;&gt;minimum standards&lt;/a&gt; for operators.&lt;/p&gt;
&lt;p&gt;For a look at more contemporary data, Wazni&apos;s group examined outcomes for 1,449 consecutive patients treated with transvenous laser-assisted lead extraction at 13 U.S. and Canadian centers between January 2004 and December 2007.&lt;/p&gt;
&lt;p&gt;Among the 2,405 procedures, 70% were for pacemakers leads and 29.2% for defibrillator leads, with most being active fixation leads (1,226).&lt;/p&gt;
&lt;p&gt;The extracted leads had been in place for an average of 82.1 months (range 0.4 to 356.8). They were taken out predominantly because of infection (29.2% device-related endocarditis and 27.7% pocket infection).&lt;/p&gt;
&lt;p&gt;More than a quarter were nonfunctional (26.6%), while an additional 11.1% were functional but abandoned.&lt;/p&gt;
&lt;p&gt;Removal was complete for 96.5% of the leads and partial for 2.3%. Clinical success  --  achieving the clinical goals associated with the indication for lead removal  --  was achieved in 97.7% of the cases.&lt;/p&gt;
&lt;p&gt;Clinical failure of the procedure was associated with low patient body mass index (less than 25 kg/m&lt;sup&gt;2&lt;/sup&gt;) and with a lower volume of procedures (60 or fewer) at a center over the four years (&lt;em&gt;P&lt;/em&gt;=0.0128).&lt;/p&gt;
&lt;p&gt;Procedural adverse events, too, were more common for low BMI patients (&lt;em&gt;P&lt;/em&gt;=0.0132).&lt;/p&gt;
&lt;p&gt;Procedural failure was linked to a long implant duration (at least 10 years) and lower center volume (&lt;em&gt;P&lt;/em&gt;=0.0005).&lt;/p&gt;
&lt;p&gt;Although extraction of noninfected but nonfunctional leads is controversial, leaving them in place may just serve as a nidus for infection such that they have to be removed eventually anyway, the researchers suggested.&lt;/p&gt;
&lt;p&gt;Considering extraction in such cases requires carefully weighing patient risks individually, including operator experience in the equation, they wrote.&lt;/p&gt;
&lt;p&gt;A significant learning curve for laser-assisted extraction is not surprising, but the results in experienced hands are encouraging, Bolger concluded.&lt;/p&gt;
&lt;p&gt;By the end of the study, physicians averaged 11.4 years of experience with lead extraction (range 2.0 to 19.0 years) and 7.87 years at laser-assisted lead extraction (range 2.0 to 13.0 years).&lt;/p&gt;
&lt;p&gt;The researchers agreed that the high success and low complication rate may have been due to the experienced centers and operators.&lt;/p&gt;
&lt;p&gt;&quot;However, in the community, these more challenging cases are usually referred to centers experienced in laser-assisted lead extraction,&quot; they wrote.&lt;/p&gt;
&lt;p&gt;They noted that any selection bias in the retrospective study was most likely toward the most challenging cases &quot;as laser-assisted extraction is reserved for leads with ingrown tissue and inability to be removed with traction only.&quot;&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was sponsored by Spectranetics, manufacturer of the laser lead removal system.&lt;/p&gt;&lt;p&gt;Wilkoff reported being on the advisory board of Spectranetics.&lt;/p&gt;&lt;p&gt;Co-authors reported financial conflicts of interests with Spectranetics, St. Jude, Medtronic, Boston Scientific, and Biotronik. One is an employee of Spectranetics; another is the senior biostatistician with the company.&lt;/p&gt;&lt;p&gt;Bolger reported no conflicts of interests.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_348"
                     title="No Rebound Seen After Antiplatelet Withdrawal (CME/CE)"
                     score="0.007"
                     href="http://www.medpagetoday.com/Cardiology/PCI/tb/18226?impressionId=1265766068425"
                     
      &lt;p&gt;No evidence of a platelet aggregation rebound occurs with abrupt discontinuation of clopidogrel (Plavix) in patients undergoing percutaneous coronary intervention (PCI), investigators in a randomized clinical trial concluded.&lt;/p&gt;
&lt;p&gt;Values for adenosine diphosphate (ADP)-induced platelet aggregation did not differ significantly between patients whose clopidogrel therapy was withdrawn abruptly and those in whom clopidogrel was tapered before discontinuation, they wrote in an article in the Feb. 9 issue of the &lt;em&gt;Journal of the American College of Cardiology&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;The findings also showed that tapering of clopidogrel does not lead to lower platelet aggregation values after clopidogrel withdrawal, according to Dirk Sibbing, MD, of Technical University Munich in Germany, and colleagues&lt;em&gt;&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;&quot;The time course of platelet aggregation values  --  regardless of the device, the agonist, or the agonist concentration used  --  after clopidogrel cessation provides no evidence for the existence of a rebound phenomenon of platelets after discontinuing clopidogrel,&quot; they wrote in conclusion.&lt;/p&gt;
&lt;p&gt;For patients undergoing PCI, dual antiplatelet therapy with aspirin and clopidogrel has become the mainstay for prevention of thrombotic events. Lifelong aspirin therapy is recommended for patients after PCI, but clinical guidelines recommend discontinuation of clopidogrel after six or 12 months. The standard practice is to withdraw clopidogrel abruptly, the authors noted.&lt;/p&gt;
&lt;p&gt;Recent studies have shown a clustering of thrombotic events in the first few weeks after discontinuation of long-term clopidogrel therapy. The observations have led to the hypothesis of a rebound phenomenon of platelet aggregation. However, the hypothesis had not been examined specifically within the context of clopidogrel withdrawal.&lt;/p&gt;
&lt;p&gt;&quot;Because different studies have demonstrated that insufficient suppression of platelet reactivity to ADP is associated with an increased risk of thrombotic events after coronary stent placement, the observed clustering of adverse events reported in clinical studies might be related to an intermittent status of platelet hyperreactivity or so-called platelet rebound with very high ADP-induced platelet aggregation levels,&quot; the authors wrote.&lt;/p&gt;
&lt;p&gt;&quot;A tapering of clopidogrel treatment over a certain period of time before stopping the intake of the drug completely might provide a beneficial treatment strategy to attenuate this supposed rebound phenomenon of platelets.&quot;&lt;/p&gt;
&lt;p&gt;Sibbing and colleagues designed a randomized clinical trial to determine whether a rebound phenomenon exists after discontinuation of clopidogrel and whether the rebound can be attenuated by a clopidogrel-tapering regimen.&lt;/p&gt;
&lt;p&gt;The investigators enrolled 69 patients receiving clopidogrel in association with PCI procedures. In all cases, discontinuation of clopidogrel was planned.&lt;/p&gt;
&lt;p&gt;The patients were randomized to two strategies of discontinuation: tapering of the clopidogrel dose over four weeks, followed by discontinuation; or treatment for four weeks, as planned, followed by abrupt discontinuation.&lt;/p&gt;
&lt;p&gt;Investigators assessed platelet aggregation at enrollment and during weeks two through eight after randomization. Aggregation was assessed simultaneously by light transmission aggregometry (LTA) and multiple electrode aggregometry (MEA).&lt;/p&gt;
&lt;p&gt;The primary endpoint was the highest rate of ADP-induced platelet aggregation by LTA in weeks five through eight after clopidogrel withdrawal.&lt;/p&gt;
&lt;p&gt;Platelet aggregation by LTA peaked at 73% in the group that had clopidogrel abruptly withdrawn and at 69.3% in the tapering group, resulting in a nonsignificant difference (&lt;em&gt;P&lt;/em&gt;=0.21). The between-group values did not differ across the range of ADP concentrations used (1.25 to 20 &amp;#181;mol/L).&lt;/p&gt;
&lt;p&gt;Results by MEA were similar: The peak aggregation value associated with abrupt withdrawal was 925 AU x min compared with 890 AU x min with clopidogrel tapering (&lt;em&gt;P&lt;/em&gt;=0.55).&lt;/p&gt;
&lt;p&gt;Studies with different agonists of platelet aggregation also yielded similar results in the two patient groups.&lt;/p&gt;
&lt;p&gt;Despite finding no difference between the two strategies for clopidogrel withdrawal, the authors did not rule out the possibility of a beneficial effect of tapering clopidogrel.&lt;/p&gt;
&lt;p&gt;&quot;It could be hypothesized that, apart from the maximal values of platelet aggregation observed, a more gradual increase of platelet aggregation values achieved by a clopidogrel-tapering regimen is beneficial for the reduction of thrombotic events,&quot; the authors wrote.&lt;/p&gt;
&lt;p&gt;&quot;In fact, we observed a relatively rapid increase of platelet aggregation values in the [abrupt withdrawal] group of patients in our study. Whether this rapid increase might be disadvantageous in case of stopping clopidogrel treatment remains uncertain.&quot;&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was supported by Cordis, Medtronic, and Dynabyte.&lt;/p&gt;&lt;p&gt;Sibbing disclosed relationships with Dynabyte and Eli Lilly.&lt;/p&gt;&lt;p&gt;Co-author Adnan Kastrati disclosed relationships with Eli Lilly, sanofi-aventis, and Bristol-Myers Squibb.&lt;/p&gt;&lt;p&gt;Co-author Nicolas von Beckerath disclosed relationships with Eli Lilly and sanofi-aventis.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_323"
                     title="Peptide Predicts Heart Failure in Older Patients (CME/CE)"
                     score="0.004"
                     href="http://www.medpagetoday.com/Cardiology/CHF/tb/18193?impressionId=1265766068425"
                     
      &lt;p&gt;Serial measurement of a natriuretic peptide predicted the risk of heart failure and cardiovascular death in older patients who were initially free of heart failure, data from a longitudinal cohort study showed.&lt;/p&gt;
&lt;p&gt;An increase of more than 25% in levels of N-terminal pro-B type natriuretic peptide (NT-proBNP) doubled the risk of heart failure and cardiovascular death. In contrast, a more than 25% decrease in NT-proBNP was associated with a greater than 40% reduction in the risk of both end points.&lt;/p&gt;
&lt;p&gt;&quot;NT-proBNP levels frequently change over time, and these fluctuations reflect dynamic changes in cardiovascular risk,&quot; Christopher R. deFilippi, MD, of the University of Maryland in Baltimore, and co-authors concluded in an article in the Feb. 2 issue of the &lt;em&gt;Journal of the American College of Cardiology&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;&quot;This change in [NT-proBNP] level reflects a significant change in patient risk independent of cardiovascular risk factors, ejection fraction, or medication use,&quot; they added. &quot;Ultimately, NT-proBNP levels may guide further diagnostic testing or potential preventive measures to reduce the risk of developing heart failure or dying of cardiovascular disease.&quot;&lt;/p&gt;
&lt;p&gt;About 80% of cardiovascular deaths occur in older adults. Assessing cardiovascular risk in older patients is challenging because traditional cardiovascular risk factors are less predictive in older versus middle-age populations, the authors wrote.&lt;/p&gt;
&lt;p&gt;Subclinical cardiovascular disease is common among older adults and increases the risk of cardiovascular events, including heart failure. Repeated measures of traditional markers of cardiovascular disease in patients with subclinical disease are associated with increased risk compared with patients who remain free of identifiable disease, the authors continued.&lt;/p&gt;
&lt;p&gt;Levels of BNP and NT-proBNP are associated with long-term cardiovascular outcomes in the general population. However, the peptides&apos; ability to provide additional prognostic information beyond that of traditional risk factors remained controversial.&lt;/p&gt;
&lt;p&gt;To examine the prognostic value of NT-proBNP in an older population, deFilippi and colleagues analyzed data on 3,000 participants in the Cardiovascular Health Study. The authors hypothesized that NT-proBNP levels in an ambulatory population of older patients would independently predict new-onset heart failure and cardiovascular death.&lt;/p&gt;
&lt;p&gt;&quot;Furthermore, we anticipated that serial measurements of NT-proBNP, as a possible surrogate for change in subclinical disease status, identify a dynamic change in long-term risk of incident heart failure and cardiovascular mortality,&quot; the authors wrote.&lt;/p&gt;
&lt;p&gt;Stored serum samples obtained at enrollment and two to three years later were used to measure NT-proBNP levels. Median follow-up for the cohort was 11.9 years.&lt;/p&gt;
&lt;p&gt;After separating the study group into quintiles of NT-proBNP levels, investigators found that patients with the highest baseline levels of the peptide (&amp;gt;267.7 pg/mL) had a threefold greater risk of new-onset heart failure (HR 3.05, 95% CI 2.46 to 3.78) and cardiovascular death (HR 3.02, 95% CI 2.36 to 3.86) compared with patients in the lowest NT-proBNP quintile (&amp;lt;47.5 pg/mL).&lt;/p&gt;
&lt;p&gt;The researchers identified 190 pg/mL as the NT-proBNP threshold for increased risk. Among study participants with baseline levels less than 190 pg/mL, an increase greater than 25% to a level above 190 pg/mL had a twofold increased risk of heart failure (HR 2.13, 95% CI 1.68 to 2.71) and cardiovascular death (HR 1.91, 95% CI 1.43 to 2.53) compared with participants whose NT-proBNP levels remained below 190 pg/mL.&lt;/p&gt;
&lt;p&gt;Among study participants with elevated baseline NT-proBNP levels, an increase greater than 25% also doubled the risk of heart failure (HR 2.06, 95% CI 1.56 to 2.72) and cardiovascular disease (HR 1.88, 95% CI 1.37 to 2.57).&lt;/p&gt;
&lt;p&gt;A decrease greater than 25% from baseline significantly reduced the risk of heart failure (HR 0.58, 95% CI 0.36 to 0.93) and cardiovascular death (HR 0.57, 95% CI 0.32 to 1.01) compared with participants whose baseline levels remained elevated.&lt;/p&gt;
&lt;p&gt;The investigators noted limitations of the study including the fact that a quarter of the participants did not have a follow-up blood sample and those who did were younger and had fewer cardiac risk factors.&lt;/p&gt;
&lt;p&gt;In addition, the length of follow-up could not account for differences in treatment over time, and the accuracy of NT-proBNP levels in samples as much as 20 years old cannot be assured.&lt;/p&gt;
&lt;p&gt;The study is noteworthy for highlighting the concept of dynamic risk assessment based on serial measurement of NT-proBNP, Richard W. Troughton, MB ChB, PhD, Matthew G. Daly, MB ChB, and Christopher M. Frampton, PhD, of the University of Otago in Christchurch, New Zealand, wrote in an editorial.&lt;/p&gt;
&lt;p&gt;&quot;The findings confirm a modest improvement in risk stratification by including a single measurement of NT-proBNP levels,&quot; they wrote &quot;The investigators take this a step further by showing that serial NT-proBNP measurement at a later time provides a further modest improvement in risk stratification.&quot;&lt;/p&gt;
&lt;p&gt;&quot;Whether the improvement in risk stratification achieved by performing serial NT-proBNP testing crosses a threshold of definite clinical value needs further evaluation, with particular consideration of the cost-effectiveness of such a strategy,&quot; they added.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was supported by the National Institutes of Health, University of Pittsburgh, and Roche Diagnostics.&lt;/p&gt;&lt;p&gt;DeFilippi disclosed relationships with Siemens, Roche Diagnostics, BG Medicine, and Critical Diagnostics. Co-author Robert H. Christenson disclosed relationships with Roche Diagnostics, Siemens Healthcare Diagnostics, and Response Biomedical. Co-author Stephen L. Seliger disclosed a relationship with Roche.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
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