Medication Summary
The goals of pharmacotherapy for heart failure are to reduce morbidity and to prevent complications. Along with oxygen, medications assisting with symptom relief include: (1) diuretics, which reduce edema by reduction of blood volume and venous pressures; (2) vasodilators, for preload and afterload reduction; (3) digoxin, which can cause a small increase in cardiac output; (4) inotropic agents, which help to restore organ perfusion and reduce congestion; (5) anticoagulants, to decrease the risk of thromboembolism; (6) beta-blockers, for neurohormonal modification, left ventricular ejection fraction (LVEF) improvement, arrhythmia prevention, and ventricular rate control; (7) angiotensin-converting enzyme inhibitors (ACEIs), for neurohormonal modification, vasodilatation, and LVEF improvement; (8) angiotensin II receptor blockers (ARBs), also for neurohormonal modification, vasodilatation, and LVEF improvement; and (9) analgesics, for pain management.
Drugs that can exacerbate heart failure should be avoided, such as nonsteroidal anti-inflammatory drugs (NSAIDs), calcium channel blockers (CCBs), and most antiarrhythmic drugs (except class III). NSAIDs can cause sodium retention and peripheral vasoconstriction, and they can attenuate the efficacy and enhance the toxicity of diuretics and ACEIs. CCBs can worsen heart failure and may increase the risk of cardiovascular events; only the vasoselective CCBs have been shown not to adversely affect survival. Antiarrhythmic agents can have cardiodepressant effects and may promote arrhythmia; only amiodarone and dofetilide have been shown not to adversely affect survival.
Beta-Blockers, Alpha Activity
Class Summary
Beta-blockers inhibit the sympathomimetic nervous system and block alpha1-adrenergic vasoconstrictor activity. These agents have moderate afterload reduction properties and cause slight preload reduction. In addition to decreasing mortality rates, beta-blockers also reduce hospitalizations and the risk of sudden death; improve LV function and exercise tolerance; and reduce heart failure functional class. Although other beta-blockers with similar pharmacologic properties might hypothetically be beneficial in heart failure, the target doses have not been identified in clinical trials.
Carvedilol (Coreg, Coreg CR)
Carvedilol is a nonselective beta- and alpha1-adrenergic blocker. It does not appear to have intrinsic sympathomimetic activity. Carvedilol at the target dose of 25 mg twice daily has been shown to reduce mortality in clinical trials of heart failure patients with reduced ejection fraction.
Beta-Blockers, Beta-1 Selective
Class Summary
Certain beta-1 blockers are selective in blocking beta-1 adrenoreceptors. These agents are used in heart failure to reduce heart rate and blood pressure.
Metoprolol (Lopressor, Toprol XL)
Metoprolol is a selective beta1-adrenergic blocker at lower doses. It inhibits beta2-receptors at higher doses. It does not have intrinsic sympathomimetic activity. The long-acting formulation (metoprolol succinate) at a target dose of 200 mg daily has been shown to reduce mortality in a clinical trial of patients with heart failure and low ejection fraction.
Bisoprolol (Zebeta)
Bisoprolol is a highly selective beta1-adrenergic receptor blocker that decreases the automaticity of contractions. Bisoprolol at the target dose of 10 mg daily has been shown to reduce mortality in a clinical trial of patients with heart failure and reduced ejection fraction, but is not approved for heart failure use in the US.
ACE Inhibitors
Class Summary
Angiotensin-converting enzyme inhibitors (ACEIs) prevent conversion of angiotensin I to angiotensin II, which results in lower aldosterone secretion. Use of ACEIs increases survival, improves symptoms, and decreases repeat hospitalizations.
Captopril
Captopril prevents conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, resulting in lower aldosterone secretion. Captopril at a target dose of 25 mg three times daily has been shown to improve survival in patients with low ejection fraction after myocardial infarction.
Enalapril (Vasotec)
Enalapril prevents conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, resulting in increased levels of plasma renin and a reduction in aldosterone secretion. It helps control blood pressure and proteinuria. Enalapril decreases the pulmonary-to-systemic flow ratio in the catheterization laboratory and increases systemic blood flow in patients with relatively low pulmonary vascular resistance. It has a favorable clinical effect when administered over a long period. It helps prevent potassium loss in distal tubules. The body conserves potassium; thus, less oral potassium supplementation is needed. Enalapril at a target dose of 10 mg twice daily has been shown to improve survival in patients with heart failure and reduced ejection fraction.
Lisinopril (Prinivil, Zestril)
Lisinopril prevents conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, resulting in increased levels of plasma renin and a reduction in aldosterone secretion. Lisinopril at a target dose of 10 mg daily has been shown to reduce mortality after myocardial infarction.
Ramipril (Altace)
Ramipril prevents conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, resulting in increased levels of plasma renin and a reduction in aldosterone secretion. Ramipril at a target dose of 5 mg twice daily has been shown to reduce mortality in patients with heart failure after myocardial infarction.
Quinapril (Accupril)
Quinapril prevents conversion of angiotensin I to angiotensin II, a potent vasoconstrictor, resulting in increased levels of plasma renin and a reduction in aldosterone secretion.
ARBs
Class Summary
Angiotensin receptor blockers (ARBs) are reasonable first-line therapy for patients with mild to moderate heart failure symptoms and left ventricular (LV) dysfunction when patients are already taking these agents for other indications. ARBs block the renin-angiotensin-aldosterone system (RAAS) by competitive inhibition of the AT1 receptor, thereby decreasing afterload and preventing LV remodeling. The use of ARBs increases survival and decreases hospitalization rates, but these agents are not superior to angiotensin-converting enzyme inhibitors (ACEIs). ARBs can also be used as add-on therapy for patients who have refractory heart failure symptoms despite optimal heart failure therapy.
Losartan (Cozaar)
Losartan blocks the vasoconstrictor and aldosterone-secreting effects of angiotensin II at tissue receptor sites. It may induce more complete inhibition of the renin-angiotensin system than ACE inhibitors, and it does not affect the response to bradykinin (less likely to be associated with cough and angioedema). These agents are used in patients unable to tolerate ACE inhibitors. Losartan has not been demonstrated to improve survival in heart failure.
Valsartan (Diovan)
Valsartan is a prodrug that produces direct antagonism of angiotensin II receptors. It displaces angiotensin II from the AT1 receptor and may lower blood pressure by antagonizing AT1-induced vasoconstriction, aldosterone release, catecholamine release, arginine vasopressin release, water intake, and hypertrophic responses. It may induce more complete inhibition of the renin-angiotensin system than ACE inhibitors, does not affect the response to bradykinin, and is less likely to be associated with cough and angioedema. It is used in patients unable to tolerate ACE inhibitors. Valsartan at a target dose of 160 mg twice daily has been shown to improve survival in patients with heart failure and reduced ejection fraction.
Candesartan (Atacand)
Candesartan blocks the vasoconstriction and aldosterone-secreting effects of angiotensin II. It may induce more complete inhibition of the renin-angiotensin system than ACE inhibitors, does not affect the response to bradykinin, and is less likely to be associated with cough and angioedema. Use candesartan in patients unable to tolerate ACE inhibitors. Candesartan at a target dose of 32 mg daily has been shown to improve survival in patients with heart failure and reduced ejection fraction.
Irbesartan (Avapro)
Irbesartan blocks the vasoconstrictor and aldosterone-secreting effects of angiotensin II at tissue receptor sites. It may induce more complete inhibition of the renin-angiotensin system than ACE inhibitors, and it does not affect the response to bradykinin (less likely to be associated with cough and angioedema). Irbesartan has not been shown to improve survival in heart failure.
Azilsartan (Edarbi)
Azilsartan blocks the vasoconstrictor and aldosterone-secreting effects of angiotensin II at tissue receptor sites. It may induce more complete inhibition of the renin-angiotensin system than ACE inhibitors, and it does not affect the response to bradykinin (less likely to be associated with cough and angioedema).
Inotropic Agents
Class Summary
Inotropic agents such as milrinone, digoxin, dopamine, and dobutamine are used to increase the force of cardiac contractions. Intravenous positive inotropic agents should only be used in inpatient settings — and then only in patients who manifest signs and symptoms of low cardiac output syndrome (volume overload with evidence of organ hypoperfusion).
Milrinone
Milrinone is a type 3 phosphodiesterase inhibitor that increases inotropy, chronotropy, and lusitropy, acting via cyclic guanosine monophosphate (cGMP) to increase the intramyocardial adenosine triphosphate (ATP). It is a potent vasodilator agent, being a venous and arterial vasodilator, and it is used in patients with pulmonary hypertension. Milrinone can be used in the presence of a beta-blocker. Milrinone is thought to create less tachycardia, because it does not directly stimulate beta-receptors.
Digoxin (Lanoxin)
Digoxin is a cardiac glycoside with direct inotropic effects, in addition to indirect effects, on the cardiovascular system. It acts directly on cardiac muscle, increasing myocardial systolic contractions. Indirect actions result in increased carotid sinus nerve activity and enhanced sympathetic withdrawal for any given increase in mean arterial pressure. It is used to improve symptoms associated with HF by enhancing cardiac contractility. Although digoxin does not confer a survival benefit, it has reduced the number of hospitalizations that occur as a result of worsening heart failure.
Dopamine
Dopamine is a naturally occurring catecholamine that acts as a precursor to norepinephrine. It stimulates both adrenergic and dopaminergic receptors. The hemodynamic effect is dose dependent. Low-dose use is associated with dilation within renal and splanchnic vasculature, resulting in enhanced diuresis. Moderate doses enhance cardiac contractility and the heart rate. Higher doses cause increased afterload through peripheral vasoconstriction. Administer by continuous intravenous infusion. It is usually used in severe heart failure and is reserved for patients with moderate hypotension (eg, systolic blood pressure 70-90 mm Hg). Typically, moderate or higher doses are used.
Dobutamine
Dobutamine, a beta-receptor agonist, increases inotropy and chronotropy and decreases afterload, thereby improving end-organ perfusion. It produces vasodilation and increases the inotropic state. At higher dosages, it may cause increased heart rate, exacerbating myocardial ischemia. Careful hemodynamic and patient monitoring is required.
Vasodilators
Class Summary
In addition to diuretic therapy, vasodilators are recommended as first-line therapy for patients with acute heart failure in the absence of hypotension, for relief of symptoms. Vasodilators decrease preload and/or afterload as well as reduce systemic vascular resistance (SVR).
Nitroprusside sodium (Nitropress)
Nitroprusside sodium is a potent balanced arterial and venous vasodilator, resulting in a very efficient decrease of intracardiac filling pressures. It requires careful hemodynamic monitoring using indwelling catheters and monitoring for cyanide toxicity, especially in the presence of renal dysfunction. It is particularly helpful for patients who present with severe pulmonary congestion in the presence of hypertension and severe mitral regurgitation. The drug should be titrated down to cessation rather than abruptly stopped, owing to the rebound potential.
Hydralazine
Hydralazine decreases systemic resistance through direct vasodilation of arterioles. A hydralazine and nitrate combination reduces preload and afterload. Combinations of hydralazine and nitrates are recommended to improve outcomes for African Americans with moderate-to-severe symptoms of heart failure on optimal medical therapy with ACEIs/ARBs, beta-blockers, and diuretics.
Nitrates
Class Summary
Nitrates improve hemodynamic effects in heart failure by decreasing left ventricular filling pressure and systemic vascular resistance. These agents also result in a slight improvement on cardiac output.
Nitroglycerin (Nitrostat, Nitro-Dur, Nitrolingual, Nitro-Time, NitroMist, Minitran)
Nitroglycerin is first-line therapy for patients who are not hypotensive. It provides excellent and reliable preload reduction. Higher doses provide mild afterload reduction. It has rapid onset and offset (both within minutes), allowing rapid clinical effects and rapid discontinuation of effects in adverse clinical situations. It produces vasodilation and increases inotropic activity of the heart. At higher dosages, it may exacerbate myocardial ischemia by increasing the heart rate.
Isosorbide dinitrate (Dilatrate-SR, Isordil Titradose)
Isosorbide dinitrate relaxes vascular smooth muscle by stimulating intracellular cyclic GMP. It decreases left ventricular pressure (preload) and arterial resistance (afterload). By decreasing left ventricular pressure and dilating arteries, it reduces cardiac oxygen demand. Chronic use of isosorbide dinitrate as a sole vasodilating agent is not recommended.
Isosorbide dinitrate and Hydralazine (BiDil)
This is a fixed-dose combination of isosorbide dinitrate (20 mg/tab), a vasodilator with effects on both arteries and veins, and hydralazine (37.5 mg/tab), a predominantly arterial vasodilator. It is indicated for heart failure in black patients, based in part on results from the African American Heart Failure Trial. Two previous trials in the general population of patients with severe heart failure found no benefit but suggested a benefit in black patients. Black patients showed a 43% reduction in mortality rate, a 39% decrease in hospitalization rate, and a decrease in symptoms from heart failure.
Isosorbide mononitrate (Monoket)
Isosorbide mononitrate causes relaxation of vascular smooth muscle and consequent dilatation of peripheral arteries and veins. Dilation of the veins promotes peripheral pooling of blood and decreases venous return to the heart, thereby reducing left ventricular end-diastolic pressure and pulmonary capillary wedge pressure (preload). Arteriolar relaxation reduces systemic vascular resistance, systolic arterial pressure, and mean arterial pressure (afterload).
Cardiovascular, Other
Class Summary
Human B-type natriuretic peptides (hBNPs) such as nesiritide are used in patients with acutely decompensated heart failure. These agents reduce pulmonary capillary wedge pressure and improve dyspnea.
Nesiritide (Natrecor)
Nesiritide is a recombinant DNA form of hBNP that dilates veins and arteries. hBNP binds to the particulate guanylate cyclase receptor of vascular smooth muscle and endothelial cells. Binding to the receptor causes an increase in cGMP, which serves as a second messenger to dilate veins and arteries. It reduces PCWP and improves dyspnea in patients with acutely decompensated HF.
Diuretics, Loop
Class Summary
Diuretics remain the mainstay of therapy and the current standard of care for acute heart failure. First-line diuretic therapy is a loop diuretic (furosemide, bumetanide, torsemide) in the lowest effective dose, either once or twice a day — although it can be used up to 3-4 times a day — depending on the individual response and renal function. Response to diuretic therapy often depends on bioavailability of the drug (better on an empty stomach) and nutritional level (loop diuretics are bound to proteins for renal delivery).
Furosemide (Lasix)
Furosemide increases the excretion of water by interfering with the chloride-binding cotransport system, which, in turn, inhibits sodium and chloride reabsorption in the ascending loop of Henle and distal renal tubule. The dose must be individualized to the patient. Depending on the response, administer furosemide at small dose increments (20-200 mg) until desired diuresis occurs.
Torsemide (Demadex)
Torsemide acts from within the lumen of the thick ascending portion of the loop of Henle, where it inhibits the sodium, potassium, and chloride carrier system. It increases urinary excretion of sodium, chloride, and water, but does not significantly alter the glomerular filtration rate, renal plasma flow, or acid-base balance. Torsemide is roughly twice as potent as furosemide on a milligram basis. Depending on the response, administer furosemide at small dose increments (10-100 mg) until desired diuresis occurs.
Bumetanide
Bumetanide increases the excretion of water by interfering with the chloride-binding cotransport system, which, in turn, inhibits sodium, potassium, and chloride reabsorption in the ascending loop of Henle. These effects increase urinary excretion of sodium, chloride, and water, resulting in profound diuresis. Renal vasodilation occurs following administration, renal vascular resistance decreases, and renal blood flow is enhanced. Bumetanide is roughly four times as potent as furosemide on a milligram basis. Depending on the response, administer bumetanide at small dose increments (0.5-5 mg) until desired diuresis occurs.
Diuretics, Thiazide
Class Summary
If patients with heart failure do not have a response to treatment with loop diuretics, a thiazide diuretic such as hydrochlorothiazide or metolazone can be added 30 minutes before adminstration of the loop diuretic to enhance the response. Thiazide diuretics inhibit reabsorption of sodium and chloride in the cortical thick ascending limb of the loop of Henle and the distal tubules. They also increase potassium and bicarbonate excretion as well as decrease calcium excretion and uric acid retention. Combination diuretic therapy should be monitored closely for development of hypovolemia, hypokalemia, hypomagnesemia, and hyponatremia.
Hydrochlorothiazide (Microzide)
Hydrochlorothiazide inhibits reabsorption of sodium in the distal tubules, causing increased excretion of sodium, water, potassium, and hydrogen ions.
Indapamide
Indapamide has a diuretic effect that is localized at the proximal segment of the distal tubule of the nephron. Similar to other diuretics it may enhance sodium, chloride and water excretion.
Chlorthalidone (Thalitone)
Chlorthalidone inhibits the reabsorption of sodium in distal tubules, causing increased excretion of sodium and water, as well as potassium and hydrogen ions.
Chlorothiazide (Diuril)
Chlorothiazide affects the distal renal tubular mechanism of electrolyte reabsorption. It increases excretion of sodium and chloride in approximately equivalent amounts. Natriuresis may be accompanied by some loss of potassium and bicarbonate
Diuretics, Other
Class Summary
Metolazone is a diuretic of the quinazoline class and has thiazidelike properties. This agent interferes with the renal tubular mechanism of electrolyte reabsorption.
Metolazone (Zaroxolyn)
Metolazone increases excretion of sodium, water, potassium, and hydrogen ions by inhibiting reabsorption of sodium in the distal tubules. Metolazone may be more effective in patients with impaired renal function.
Diuretics, Potassium-Sparing
Class Summary
The potassium-sparing diuretics interfere with sodium reabsorption at the distal tubules, resulting in decreased potassium secretion. These agents have a weak diuretic and antihypertensive effect when used alone. The potassium-sparing diuretics spironolactone or triamterene are usually used in addition to the loop diuretics. Note that careful monitoring of renal function and potassium is necessary for all diuretics.
Spironolactone (Aldactone)
Spironolactone is used for the management of edema resulting from excessive aldosterone excretion. It competes with aldosterone for receptor sites in the distal renal tubules, increasing water excretion while retaining potassium and hydrogen ions. Spironolactone at a target dose of 25 mg has been shown to improve survival in patients with heart failure and reduced ejection fraction.
Amiloride (Midamor)
Amiloride is unrelated chemically to other known antikaliuretic or diuretic agents. It is a potassium-conserving (antikaliuretic) drug that, compared with thiazide diuretics, possesses weak natriuretic, diuretic, and antihypertensive activity.
Triamterene (Dyrenium)
Triamterene is a potassium-sparing diuretic with relatively weak natriuretic properties. It exerts its diuretic effect on the distal renal tubules by inhibiting the reabsorption of sodium in exchange for potassium and hydrogen. It increases sodium excretion and reduces excessive loss of potassium and hydrogen associated with hydrochlorothiazide.
Alpha/Beta Adrenergic Agonists
Class Summary
In the presence of significant hypotension, adrenergic agonists are used to improve cardiac output and organ perfusion.
Epinephrine (Adrenaclick, Adrenalin, EpiPen, EpiPen Jr.)
Epinephrine is an alpha-agonist and its effects include increased peripheral vascular resistance, reversed peripheral vasodilatation, systemic hypotension, and vascular permeability. Beta2-agonist effects include bronchodilatation, chronotropic cardiac activity, and positive inotropic effects.
Norepinephrine (Levophed)
Norepinephrine is a naturally occurring catecholamine with potent alpha-receptor and mild beta-receptor activity. It stimulates beta1- and alpha-adrenergic receptors, resulting in increased cardiac muscle contractility, heart rate, and vasoconstriction. It increases blood pressure and afterload. Increased afterload may result in decreased cardiac output, increased myocardial oxygen demand, and cardiac ischemia. It is generally reserved for use in patients with severe hypotension (eg, systolic blood pressure < 70 mm Hg) or hypotension that is unresponsive to other medications.
Aldosterone Antagonists, Selective
Class Summary
Aldosterone antagonists are weak diuretics that reduce mortality and the risk of sudden death by blocking the effects of aldosterone, thereby decreasing myocardial and vascular inflammation and collagen production. This, in turn, prevents apoptosis, decreases stimulation of the renin-angiotensin-aldosterone system (RAAS) and sympathetic nervous system (SNS), and acts as a membrane stabilizer, thus preventing arrhythmia. Aldosterone antagonists are recommended for patients who have moderately severe and severe heart failure and reduced left ventricular (LV) systolic function (Randomized Aldactone Evaluation Study [RALES]) who can be carefully monitored for preserved renal function and normal potassium concentration.
Eplerenone (Inspra)
Eplerenone selectively blocks aldosterone at the mineralocorticoid receptors in epithelial (eg, kidney) and nonepithelial (eg, heart, blood vessels, and brain) tissues; thus, it decreases blood pressure and sodium reabsorption. It is indicated to improve survival for heart failure or left LV dysfunction following acute MI. Compared with placebo, a significant risk reduction (15%) has been observed. The EMPHASIS-HF trial has shown that patients with systolic heart failure with mild symptoms treated with eplerenone have a significant reduction in cardiovascular death or heart failure hospitalization when compared with placebo.
Anticoagulants, Cardiovascular
Class Summary
Patients with heart failure and depressed left ventricular (LV) ejection fraction are thought to have an increased risk of thrombus formation due to low cardiac output. Hospitalized patients with heart failure are at a high risk for venous thromboembolism and should receive prophylaxis. Anticoagulation with an international normalized ratio (INR) goal of 2-3 is indicated in the presence of: (1) an LV thrombus, (2) a thromboembolic event with or without evidence of an LV thrombus, and (3) paroxysmal or chronic atrial arrhythmias.
Warfarin (Coumadin, Jantoven)
Warfarin interferes with hepatic vitamin K–dependent carboxylation. It is used for the prophylaxis and treatment of thromboembolic disorders.
Dabigatran (Pradaxa)
Competitive, direct thrombin inhibitor. Thrombin enables fibrinogen conversion to fibrin during the coagulation cascade, thereby preventing thrombus development. Inhibits both free and clot-bound thrombin and thrombin-induced platelet aggregation.
Calcium Channel Blockers
Class Summary
Generally, calcium channel blockers (CCBs) should be avoided. CCBs do not play a direct role in the management of heart failure; however, these agents may be used to treat other conditions, such as hypertension or angina in heart failure patients.
CCBs may be used in heart failure with normal left ventricular ejection fraction. These drugs may also improve exercise tolerance via their vasodilatory properties.
Amlodipine (Norvasc)
Amlodipine has antianginal and antihypertensive effects. It blocks the post-excitation release of calcium ions into cardiac and vascular smooth muscle, thereby inhibiting the activation of ATPase on myofibril contraction. The overall effect is reduced intracellular calcium levels in cardiac and smooth muscle cells of the coronary and peripheral vasculature, resulting in dilatation of the coronary and peripheral arteries. It also increases myocardial oxygen delivery in patients with vasospastic angina.
Nifedipine (Adalat CC, Afeditab CR, Nifediac CC, Nifedical XL, Procardia, Procardia XL)
Nifedipine relaxes coronary smooth muscle and produces coronary vasodilation, which in turn, improves myocardial oxygen delivery. Sublingual administration is generally safe, despite theoretical concerns.
Felodipine
Felodipine is a dihydropyridine calcium channel blocker. It inhibits the influx of extracellular calcium across the myocardial and vascular smooth muscle cell membranes. The resultant decrease in intracellular calcium inhibits the contractile processes of the smooth muscle cells, resulting in dilation of coronary and systemic arteries.
Opioid Analgesics
Class Summary
Opioid analgesics such as morphine sulfate may help to relieve patients’ anxiety, distress, and dyspnea.
Morphine sulfate (Astramorph, Avinza, DepoDur, Duramorph, Infumorph 200, Infumorph 500, Kadian, MS Contin, Oramorph SR, Roxanol)
Morphine is the drug of choice for narcotic analgesia because of its reliable and predictable effects, safety profile, and ease of reversibility with naloxone. Morphine sulfate administered intravenously may be dosed in a number of ways and commonly is titrated until the desired effect is obtained. Morphine sulfate also decreases preload in heart failure and relieves dyspnea.
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| Major Criteria | Minor Criteria |
| Paroxysmal nocturnal dyspnea | Nocturnal cough |
| Weight loss of 4.5 kg in 5 days in response to treatment | Dyspnea on ordinary exertion |
| Neck vein distention | A decrease in vital capacity by one third the maximal value recorded |
| Rales | Pleural effusion |
| Acute pulmonary edema | Tachycardia (rate of 120 bpm) |
| Hepatojugular reflux | Hepatomegaly |
| S3 gallop | Bilateral ankle edema |
| Central venous pressure > 16 cm water | |
| Circulation time of 25 sec | |
| Radiographic cardiomegaly | |
| Pulmonary edema, visceral congestion, or cardiomegaly at autopsy | |
| Source: Ho KK, Pinsky JL, Kannel WB, Levy D. The epidemiology of heart failure: the Framingham Study. J Am Coll Cardiol. 1993 Oct;22(4 suppl A):6A-13A.[49] | |
| Class | Functional Capacity |
| I | Patients without limitation of physical activity |
| II | Patients with slight limitation of physical activity, in which ordinary physical activity leads to fatigue, palpitation, dyspnea, or anginal pain; they are comfortable at rest |
| III | Patients with marked limitation of physical activity, in which less than ordinary activity results in fatigue, palpitation, dyspnea, or anginal pain; they are comfortable at rest |
| IV | Patients who are not only unable to carry on any physical activity without discomfort but who also have symptoms of heart failure or the anginal syndrome even at rest; the patient's discomfort increases if any physical activity is undertaken |
| Source: American Heart Association. Classes of heart failure. Available at: http://www.heart.org/HEARTORG/Conditions/HeartFailure/AboutHeartFailure/Classes-of-Heart-Failure_UCM_306328_Article.jsp. Accessed: September 6, 2011.[1] | |
| level | Description | Examples | Notes |
| A | At high risk for heart failure but without structural heart disease or symptoms of heart failure | Patients with coronary artery disease, hypertension, or diabetes mellitus without impaired LV function, hypertrophy, or geometric chamber distortion |
|
| B | Structural heart disease but without signs/symptoms of heart failure | Patients who are asymptomatic but who have LVH and/or impaired LV function | |
| C | Structural heart disease with current or past symptoms of heart failure | Patients with known structural heart disease and shortness of breath and fatigue, reduced exercise tolerance |
|
| D | Refractory heart failure requiring specialized interventions | Patients who have marked symptoms at rest despite maximal medical therapy |
|
| Sources: (1) Hunt SA, American College of Cardiology, and the American Heart Association Task Force on Practice Guidelines (Writing Committee to Update the 2001 Guidelines for the Evaluation and Management of Heart Failure). ACC/AHA 2005 guideline update for the diagnosis and management of chronic heart failure in the adult: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2005 Sep 20;46(6):e1-82.[3] ; and (2) Hunt SA, Abraham WT, Chin MH, et al. 2009 Focused update incorporated into the ACC/AHA 2005 Guidelines for the Diagnosis and Management of Heart Failure in Adults A Report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines Developed in Collaboration With the International Society for Heart and Lung Transplantation. J Am Coll Cardiol. Apr 14 2009;53(15):e1-e90.[2] | |||
| Criterion | BNP, pg/mL | NT-proBNP, pg/mL | |||
| HF Unlikely (LR-Negative) | HF Likely (LR-Positive) | HF Unlikely (LR-Negative) | HF Likely (LR-Positive) | ||
| Age, y | >17 | < 100 (0.13)* | >500 (8.1)* | - | - |
| >21 | - | - | < 300 (0.02)† | - | |
| 21-50 | - | - | - | >450 (14)† | |
| 50-75 | - | - | - | >900 (5.0)† | |
| >75 | - | - | - | >1800 (3.1)† | |
| Estimated GFR, < 60 mL/min | < 200 (0.13)‡ | >500 (9.3)‡ | - | - | |
| BNP = B-type natriuretic peptide; GRF = glomerular filtration rate; HF = heart failure; LR = likelihood ratio; NPV = negative predictive value; NT-pro-BNP = N-terminal proBNP; PPV = positive predictive value; – = not specifically defined. * Derived from Breathing Not Properly data (1586 emergency department [ED] patients, prevalence of HF = 47%).[54] † Derived from PRIDE data (1256 ED patients, prevalence of HF = 57%).[55, 62] ‡ Derived from subset of Breathing Not Properly data (452 ED patients, prevalence of HF = 49%).[61] | |||||
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