To continue or Not to Continue statin therapy in patients with diagnosed CHF? Erin Woodard Mercer University October 2011 Chronic Heart Failure (CHF) Complex clinical syndrome resulting from any structural or functional cardiac disorder that impairs ability of ventricle to fill with or eject blood Pericardium, myocardium, endocardium Systolic dysfunction Diastolic dysfunction EF < 40% Impaired LV contractility Dilated LV Normal EF Impaired LV filling Contractility preserved In most patients, abnormalities of systolic and diastolic dysfunction coexist, regardless of EF. CHF Overview Clinical Presentation Epidemiology Dyspnea Fatigue Lead to limiting exercise tolerance & excess fluid retention pulmonary congestion and peripheral edema CAD HTN Dilated cardiomyopathy There is no single diagnostic test for HF because it is largely a clinical diagnosis that is based on a careful history and physical examination. CHF Overview Cont. Symptomatic disorder NYHA Functional assessment Progressive disorder NYHA Classification Class I (asymptomatic): Patients with no limitation of activities due to their HF; they suffer no symptoms from ordinary activities. Class II (mild): Slight limitation of physical activity. Comfortable at rest, but ordinary physical activity results in fatigue, palpitation, or dyspnea. Class III (moderate): Patients with marked limitation of activity due to their HF; they are comfortable only at rest. Class IV (severe): Patients who have to be at complete rest, confined to bed or chair due to their HF; any physical activity brings on discomfort and symptoms occur at rest. CHF Treatment Jessup M et al. N Engl J Med 2003;348:2007-18. Statins – Friend vs Foe Known benefit and part of first-line treatment for patients with CAD HMG-coA reductase inhibitors Increase presentation of LDL receptors Total Cholesterol Desirable <200 mg/dL Borderline high 200 – 239 mg/dL High >240 mg/dL Treat CAD and prevent events decrease new onset HF Lipoprotein – Endotoxin Hypothesis Hypothesize optimum lipoprotein concentration Serum lipoproteins to modulate the inflammatory immune function CHF patients have increased serum cytokine increased endotoxins Circulating cholesterol – and triglyceride rick lipoproteins are natural nonspecific buffers of endotoxins Bind and detox bacterial LPS Patients with CHF, a non-lipid-lowering statin (with immunomodulatory and anti-inflammatory actions) could be as effective or even more beneficial than a lipid-lowering statin Patients with CAD should be treated differently from patients with ischemic CHF Ubiquinone hypothesis Inhibition of mevalonate synthesis decreases ubiquinone Ubiquinone most abundant in heart Essential component of mitochondrial respiratory chain ATP Deleterious effects on cardiac muscles CHF patients found to have depleted ubiquinone levels Addition of CoQ helpful? Selenoprotein hypothesis Reduction of mevalonate reduction of isopentenyl-pyrophosphate Interfere with enzyme isopentenylation of SectRNA preventing maturation Literature Support 1998 Vrederoe et al. Skin test anergy in advanced heart failure Observational secondary to either ischemic or idiopathic dilated cardiomyopathy 2000 Rauchhaus et al. Inflammatory cytokines and the possible immunological role for lipoproteins in CHF Observational Small sample 2002 Horwich et al. Low serum total cholesterol is associated with marked increase in mortality in advanced heart failure Observational Large sample 2003 Rauchhaus et al. Relationship between cholesterol and survival in patients with chronic heart failure Cohort 2006 Review: Statins in the treatment of chronic heart failure: Biological and clinical considerations 2007 CORONA Randomized, doubleblind placebo controlled 2008 GISSI-HF Randomized, doubleblind placebo controlled Vredevoe DL et al. Skin test anergy in advanced heart failure secondary to either ischemic or idiopathic dilated cardiomyopathy. Am J Cardiol 1998:82:323-8. Vrederoe - 1998 Skin test anergy in advanced HF secondary to either ischemic or idopathic dilated cardiomyopathy 222 patients enrolled followed for 1 year Skin testing in NYHA functional class III,IV and assess mortality Primary endpoints Skin test anergy Mortality Vrederoe - 1998 Results Skin test anergy occurred in 45% of HF patients Mortality Increased with lack of ACEi, dec CO, dec lipids Significant differences in lipid values for TC, LDL, and TG (all lower in anergy) More with NYHA class IV HF patients significantly less reactive for 3 antigens Lower levels of lipids were predictors of higher mortality Idiopathic: no significance Ischemic: decreased lipids and increased mortality Only 1 year follow – up Rauchhaus M, Koloczek V et al. Inflammatory cytokines and the possible immunological role for lipoproteins in chronic heart failure. Int J Cardiology 2000; 76:125-33 Rauchhaus - 2000 Goal: Observe fasting cholesterol, LDL, HDL, & TG in patient with CHF in relation to concentrations of tumor necrosis factor-alpha (TNFa), soluble TNF receptor-1 and -2 and a ratio potentially indicating recent endotoxin bioactivity (sCD14/TC) 58 CHF patients and 19 controls Hypothesis – lipoprotein bind endotoxin as natural buffer Rauchhaus - 2000 Results sTNF-R1 and sCD14 were higher in CHF patients than controls where as TNFalpha and sTNF-R2 were not. Increase cholesterol decreased TNFalpha TC <200 poor outcome Limited small sample size, short term F/U Horwich TB et al. Low serum total cholesterol is associated with marked increase in mortality in advanced heart failure. J Card Failure 2002; 8:216-24 Horwich - 2002 1134 patients with advanced HF regardless of etiology (NYHA class III, IV) Purpose Describe correlation between cholesterol and baseline patient characteristics important in prognosis Investigate relationship between lipids, lipoproteins, and HF mortality Excluded patients LVEF <40% Primary endpoint Death or urgent heart transplant Horwich - 2002 Results Patients divided into quintiles based on baseline lipids 1 and 5 year survival rates (death or urgent heart transplant) Decreased TC worse outcomes HF More severe symptoms CHF Increased LDL, HDL, TG longer survival Lowest death/urgent heart transplant at TC 190-205 < 25% with TC <129 survived >5yr > 50% with TC>190 survived >5yr Confirmed findings of small sample trial Mortality based on Quintile of total cholesterol Total Cholesterol <129 (n= 222) 129-160 (n= 225) 161-189 (n=227) 190-223 (n=232) >223 (n=228) 1 year Death/UT Mortality 98 46.5% 62 29.6% 73 36% 45 21.4% 51 25.9% 2 year Death/UT Mortality 114 56.3% 77 38.6% 91 47.8% 63 32.8% 60 31.8% 5 year Death/UT Mortality 137 76.2% 108 64.9% 103 62.8% 77 48.4% 72 44.8% Similar lipid lowering therapy •14% in each group •Drug unspecified 1yr Survivors (n=805) Nonsurvivors (n=329) TC 185 165 LDL 120 106 TG 155 124 Horwich TB et al. Low serum total cholesterol is associated with marked increase in mortality in advanced heart failure. J Card Failure 2002; 8:216-24 Rauchhaus et al. Relationship between cholesterol and survival in patients with chronic heart failure. JACC 2003; 42: 11 Rauchhaus - 2003 Report on 2 cohort studies 114 patients with CHF recruited to metabolic study and followed for minimum 12 months (derivation study) 303 unselected patients with CHF (validation study) Purpose Relationship between endogenous lipoproteins and survival was explored Rauchhaus - 2003 Results “reciever operator curve analysis” showed 201mg/dL Decreased serum cholesterol = increased sTNF receptor-1 levels Theoretical Harm Lower total cholesterol (<190mg/dl) indicative of poor prognosis for CHF patients in NYHA class III and IV CAD lead to CHF Statin is proven outcomes to treat CAD and prevent coronary event Statin has been shown to prevent new onset CHF Statin decreasing levels of TC lead to poor prognosis? Statin used after diagnosis NYHA class III, IV? Studies and evaluation needed to describe risk/benefit in pharmacologically induced low TC (statin) vs naturally low TC Kjeckshus, J. et al. Rosuvastatin in Older Patients with Systolic Heart Failure. New Engl J Med 2007; 357:2248-61. “CORONA” Controlled Rosuvastatin Multinational Trial in Heart Failure *supported by AstraZeneca* CORONA - 2007 Large randomized placebo controlled study Hypothesized beneficial effects of rosuvastatin would outweigh any theoretical hazards improve survival, reduce morbidity, increase well-being Study drug: Total of 5011 patients, >60yo NYHA class II,III, or IV ischemic, systolic heart failure EF of no more than 40% Investigator thought no need for cholesterol-lowering drug 10mg of rosuvastatin vs placebo, 35 month follow up Primary Outcome Death from composite of cardiovascular causes, nonfatal MI, nonfatal stroke CORONA - 2007 Results: Primary Outcome Y N Rosuvastatin (n = 2514) 692 1822 Placebo (n=2497) 732 1765 NNT = 55 Baseline TC 5.35mmol/L Baseline LDL 3.54mmol/L (137) 1.96mmol/L (76) at 3 months Baseline HDL 1.24mmol/L (48) 1.29mmol/L (50) at 3 months Baseline TG 2.01mmol/L (178) 1.56mmol/L (138) at 3 months Baseline hsCRP 3.1mg/L 2.1mg/L Conclusion No significant reduction in primary outcome of deaths from any cause Significantly fewer hospitalizations of any type in rosuvastatin group than placebo group (for cardiovascular causes and heart failure) GISSI-HF Investigators. Effect of rosuvastatin in patietns with chronic heart failure: a randomised, double-blind, placebo-controlled trial. The Lancet; 372: 1231- 1239. “GISSI/HF” Gruppo Italiano per lo Studio della Sopravvivenza nell’Infarto miocardico trial *Funded by Societa Prodotti Antibiotici (SPA;Italy), Pfizer, Sigma Tau, and AstraZeneca GISSI/HF – 2008 Randomized, double-blind placebo controlled trial Italy. CHF class II-IV irrespective of LVEF Intervention: rosuvastatin 10mg vs placebo Followed for 3 – 9 year Primary endpoint Time to death Time to death + time to admission to hospital for cardiovascular reasons Intent- to-treat GISSI/HF – 2008 Results Death Death or hospital R 657 (29%) 1305 (57%) P 644 (28%) 1283 (56%) P=0.943 P=0.903 Conclusion Rosuvastatin 10mg daily did not affect clinical outcoems in patients with chronic heart failure of any cause, in whom drug was safe Low TC a Cause or Consequence? Association between Total Cholesterol (TC) and all-cause mortality Positive at 40 yo Negligible at 50 – 70 yo Negative at age 80 + Incidence/prevalence of CHF increasing steeply with age CHF patient untreated with statin naturally have cholesterol levels decrease? Discussion Points Most individuals on statin d/t CAD treatment Those individuals not already on a statin with prior need Take them off? Titrate down? Decrease aggressive tx? Start statin? Goal of increasing TC? Leave it alone? Benefit vs. risk? Other References Hunt SA, Abraham WT, Chin MH, et al. 2009 focused update incorporated into the ACC/AHA 2005 guidelines for the diagnosis and management of chronic heart failure in the adult. JACC 2009;53(15):e1-90.