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    <recommendedItem id="20100101_19_441"
                     title="Be Ready for Drug-Induced Vfib, Groups Urge (CME/CE)"
                     score="0.011"
                     href="http://www.medpagetoday.com/Cardiology/Arrhythmias/tb/18358?impressionId=1265808263347"
                     
      Awareness of medication-induced torsade de pointes and a preset protocol for treating it could save lives in the hospital with swift action to prevent cardiac arrest, according to a joint statement from two professional associations.&lt;br&gt;
&lt;br&gt;These cases &quot;should be avoidable&quot; with consistent electrocardiographic monitoring of patients receiving drugs known to prolong the QT interval, the American Heart Association and American College of Cardiology wrote in a statement endorsed by the American Association of Critical-Care Nurses.&lt;br&gt;
&lt;br&gt;The rare arrhythmia often provides telltale signs on ECG an hour or so before ventricular fibrillation, according to writing committee chair Barbara J. Drew, RN, PhD, of the University of California San Francisco, and colleagues.&lt;/p&gt;
&lt;p&gt;However, the statement made no one-size-fits-all recommendation on what cardiac monitoring should entail, given hospital-to-hospital differences in equipment that range from fully automated QT-monitoring systems at the high end to a computer-assisted electronic caliper feature at the other.&lt;/p&gt;
&lt;p&gt;&quot;Of utmost importance, however, is that a hospital protocol be established so that a single consistent method is used by all healthcare professionals charged with the responsibility for cardiac monitoring,&quot; Drew&apos;s group wrote.&lt;/p&gt;
&lt;p&gt;This protocol should stipulate which equipment to use for QT measurement, how to determine the end of the T wave, the formula for heart rate correction, lead-selection criteria, and the importance of measuring the same lead in the same patient over time, they said.&lt;/p&gt;
&lt;p&gt;The new statement, published online in &lt;em&gt;Circulation: Journal of the American Heart Association&lt;/em&gt; and the &lt;em&gt;Journal of the American College of Cardiology&lt;/em&gt;, included the following signs of impending torsade de pointes: &lt;ul&gt; &lt;li&gt;An increase of 60 ms in heart-rate&amp;#8211;corrected QT interval (QTc) from the preadministration baseline&lt;/li&gt; &lt;li&gt;Marked QTc interval prolongation of more than 500 ms&lt;/li&gt; &lt;li&gt;The characteristic &quot;twisting&quot; of the points on ECG as T-U wave distortion becomes more exaggerated in the beat after a pause&lt;/li&gt; &lt;li&gt;Visible (macroscopic) T-wave alternans&lt;/li&gt; &lt;li&gt;New-onset ventricular ectopy&lt;/li&gt; &lt;li&gt;Couplets and &lt;span&gt;nonsustained&lt;/span&gt; polymorphic ventricular tachycardia initiated in the beat after a pause&lt;/li&gt; &lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Prompt recognition of these ECG harbingers allows for treatment with intravenous magnesium, removal of the drug that induced the condition, and correction of electrolyte abnormalities and other exacerbating factors, including the prevention of bradycardia and long pauses with temporary pacing if necessary, according to the new statement.&lt;/p&gt;
&lt;p&gt;Prior guidelines on ventricular arrhythmias provided little help with prevention of torsade de pointes in the hospital but did recommend discontinuation of whatever drug induced long QT syndrome.&lt;/p&gt;
&lt;p&gt;The most common drugs associated with this potentially fatal arrhythmia are antibiotics, antipsychotics, and antiarrhythmia drugs.&lt;/p&gt;
&lt;p&gt;Administration in the hospital is more likely to be associated with torsade de pointes than is treatment of an outpatient population with the same drug, Drew&apos;s group noted.&lt;/p&gt;
&lt;p&gt;Hospitalized patients are often elderly, with comorbidities such as underlying heart disease and renal or hepatic dysfunction. They are also more likely to get intravenous push of the drugs.&lt;/p&gt;
&lt;p&gt;Clinical risk factors for torsade de pointes include: &lt;ul&gt; &lt;li&gt;A preexisting long QTc interval of more than 500 ms&lt;/li&gt; &lt;li&gt;Concurrent use of more than one QT-prolonging drug&lt;/li&gt; &lt;li&gt;Rapid infusion of a QT-prolonging drug intravenously&lt;/li&gt; &lt;li&gt;Heart disease, such as MI or heart failure&lt;/li&gt; &lt;li&gt;Advanced age&lt;/li&gt; &lt;li&gt;Female sex&lt;/li&gt; &lt;li&gt;Hypokalemia&lt;/li&gt; &lt;li&gt;Hypomagnesemia&lt;/li&gt; &lt;li&gt;Hypocalcemia&lt;/li&gt; &lt;li&gt;Treatment with diuretics&lt;/li&gt; &lt;li&gt;Impaired hepatic drug metabolism, whether from hepatic dysfunction or drug-drug interactions&lt;/li&gt; &lt;li&gt;Bradycardia&lt;/li&gt; &lt;/ul&gt;&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;Drew reported conflicts of interest with GE Healthcare and Philips.&lt;/p&gt;&lt;p&gt;Co-authors reported conflicts of interest with Medtronic, Pfizer, PGxHealth, FAMILION, GE HealthCare, Philips Healthcare, Abbott, Bristol-Myers Squibb, sanofi-aventis, Schering Plough, Inovise, Siloam, ArgiNOx, Astellas, Daiichi Sankyo/Lilly, Heartscape Technologies, Biosite, Inovise, Medicines Co., Millennium Pharmaceuticals, PDL BioPharma, Roche Diagnostics, Scios, Mortara Instrument, Cardiac Science, MDS Pharma, Medicure, St. Jude, Adolor, ARCA, AstraZeneca, Avanir, Cardiome, CardioDx, Novartis, Ortho Diagnostics, Sanofi, Vanderbilt/Clinical Data, iCardiac Technologies, LipoScience, Anthera, Abbott Vascular, Novo Nordisk, Roche, Biotronic, and Boston Scientific.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_189"
                     title="Tailoring Trumps Targeting for Cholesterol Control (CME/CE)"
                     score="-0.005"
                     href="http://www.medpagetoday.com/Cardiology/Dyslipidemia/tb/18023?impressionId=1265808263347"
                     
      &lt;p&gt;Lipid control is more than a simple matter of &quot;knowing your numbers,&quot; according to a computer model that found tailoring statin therapy to fit an individual&apos;s five-year risk of heart attack or stroke is a better prevention strategy than treating to preset goals.&lt;/p&gt;
&lt;p&gt;In the model, patients who whose five-year coronary artery disease risk was 5% to 15% received 40 mg of simvastatin (Zocor), while those whose risk was greater were given 40 mg of atorvastatin (Lipitor).&lt;/p&gt;
&lt;p&gt;In every scenario, the tailored approach was preferable, Rodney A. Hayward, MD, of the University of Michigan and the Veterans Affairs Ann Arbor Healthcare System, and colleagues wrote in the Jan. 19 &lt;em&gt;Annals of Internal Medicine.&lt;/em&gt;&lt;/p&gt;
&lt;p&gt;While treating-to-target is appealingly simple, that simplicity may be its main limitation, the researchers argued.&lt;/p&gt;
&lt;p&gt;Treating to a single target means that one risk factor receives &quot;dramatically more weight than all other predictors of treatment benefit, resulting in other highly relevant information being either ignored or underweighted,&quot; they wrote.&lt;/p&gt;
&lt;p&gt;That approach, tailoring treatment to reflect multiple risk factors rather than treating-to-target, is an &quot;interesting&quot; one, according to Christopher Cannon, MD, of Brigham and Women&apos;s Hospital in Boston, who was not involved in the study.&lt;/p&gt;
&lt;p&gt;But Cannon, principal investigator of a number of statin trials, said the idea may be a little too late to impact clinical practice.&lt;/p&gt;
&lt;p&gt;&quot;The guidelines won&apos;t shift to this approach any time soon, and in two years, atorvastatin will be generic, so all patients can inexpensively be treated with more intensive therapy (which is better for everyone at all risk levels),&quot; Cannon wrote in an e-mail.&lt;/p&gt;
&lt;p&gt;Although intensive therapy may be better as a rule, he conceded, it&apos;s less cost-effective when an expensive drug is used. When atorvastatin becomes available as a generic, he wrote, for &quot;$4 a month at Walmart it is simply cheaper  --  and of course better  --  to treat everyone with atorvastatin 80 mg.&quot;&lt;/p&gt;
&lt;p&gt;Assuming a population of Americans ages 30 to 75 with no history of myocardial infarction, the authors developed three treatment models: &lt;ul&gt; &lt;li&gt;Standard National Cholesterol Education Program III (NCEP) treat-to-target recommendation, which requires treatment to an LDL target of less than 190 mg/dL for low-risk individuals, less than 160 mg/dL for moderate-risk, and less than 130 mg/dL for high-risk individuals&lt;/li&gt; &lt;li&gt;Intensive NCEP III treat-to-target approach, with targets of less than 100 mg/dL for high-risk individuals&lt;/li&gt; &lt;li&gt;The tailored model, with 40 mg of simvastatin for patients who whose five-year coronary artery disease risk was 5% to 15% and 40 mg of atorvastatin (Lipitor) for higher-risk patients&lt;/li&gt; &lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;(In both NCEP III strategies statins would be used in a stepwise fashion  --  20 mg simvastatin, 40 mg simvastatin, 40 mg atorvastatin, and, finally, 80 mg atorvastatin  --  to achieve targets).&lt;/p&gt;
&lt;p&gt;Using standard NCEP III treat-to-target recommendations, &quot;37.9 million U.S. persons should receive statins, of which 7.9 million should receive high dose-potency therapy (atorvastatin 40 to 80 mg),&quot; the authors wrote.&lt;/p&gt;
&lt;p&gt;Compared with no treatment, the standard strategy would save an estimated 48 quality adjusted life years (QALYs) per 1,000 Americans treated for five years, or a total of 1.83 million total QALYs.&lt;/p&gt;
&lt;p&gt;The intensive NCEP III treat-to-target recommendations would &quot;recommend that 53.4 million U.S. persons receive statins&quot; and would save about 570,000 more QALYs than the standard treatment.&lt;/p&gt;
&lt;p&gt;Using the computer model, this strategy prevented &quot;about 720,000 more nonfatal CAD events and 30,000 more deaths&quot; than the standard treatment.&lt;/p&gt;
&lt;p&gt;Tailored treatment, by contrast, would require that about the same number of people receive a statin  --  53 million. But only 13.3 million would require high-dose statin therapy, versus roughly 18 million who would be given high-dose statin therapy using the intensive NCEP III strategy.&lt;/p&gt;
&lt;p&gt;Even so, the tailored approach would save 520,000 more QALYs than the intensive treatment approach, the authors found.&lt;/p&gt;
&lt;p&gt;&quot;The tailored treatment approach was superior to both NCEP III approaches, resulting in both more CAD morbidity and mortality prevented in the overall population and higher treatment efficiency (greater benefit per person treated),&quot; they wrote.&lt;/p&gt;
&lt;p&gt;The authors noted a number of limitations, including the paucity of clinical trial data on statin therapy in persons ages 75 or older.&lt;/p&gt;
&lt;p&gt;Moreover, although the model suggested a robust benefit for tailored treatment, &quot;the absolute population-level benefit of the tailored treatment over the treat-to-target approaches are much less certain and can vary substantially on the basis of several factors, such as statin&apos;s effect on total mortality (estimates of which are less precise in the literature than estimates for nonfatal CAD events) and the level of treatment adherence that is achievable in real-world clinical practice.&lt;/p&gt;
&lt;p&gt;&quot;Whether a tailored treatment approach is superior for other conditions in which treat-to-target strategies are currently recommended, such as blood pressure and glycemic control, warrants examination,&quot; they concluded.&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 funded in part by the Department of Veteran Affairs Health Services Research &amp;amp; Development Service&apos;s Quality Enhancement Research Initiative.&lt;/p&gt;&lt;p&gt;Hayward did not report any financial disclosures.&lt;/p&gt;&lt;p&gt;Cannon reported receiving research/grants/suport from Accumetrics, AstraZeneca, Bristol-Myers Squibb/Sanofi Partnership, GlaxoSmithKline, Intekrin Therapeutics, Merck, Merck/Schering-Plough Partnership, Novartis, and Takeda. He is a clinical adviser with equity in Automedics Medical Systems.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
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                     title="Corticosteroids Helps Some ICU Patients Off Ventilators Faster"
                     score="-0.007"
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