Cardiology
Heart Failure
Heart failure requires phenotype-specific confirmation, rapid identification of reversible precipitants, early disease-modifying therapy for reduced ejection fraction, and surveillance for congestion, arrhythmia, renal dysfunction, and progression to advanced therapies. Management must align treatment intensity with hemodynamics, comorbidity, and patient goals.
Diagnosis
Confirm the syndrome and define the phenotype
Use symptoms, examination, biomarkers, imaging, and etiologic assessment rather than ejection fraction alone.
Heart failure is a clinical syndrome caused by structural or functional impairment of ventricular filling or ejection. Dyspnea, fatigue, congestion, and edema are common but nonspecific; no single diagnostic test is sufficient. A prior low EF without clinical evidence of heart failure should not be equated with heart failure. AHA Journals+1AHA Journals2021 ACC/AHA Key Data Elements and Definitions for Heart Failure: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Data Standards (Writing Committee to Develop Clinical Data Standards for Heart Failure)PubMedDiagnosing heart failure - Chronic Heart Failure in Adults - NCBI Bookshelf
Initial assessment should establish acuity, congestion versus hypoperfusion, blood pressure, rhythm, ischemic symptoms, valve disease, renal and hepatic dysfunction, and competing cardiopulmonary diagnoses. Obtain ECG, chest radiography when clinically useful, CBC, renal function and electrolytes, liver tests, thyroid testing, glycemic assessment, and transthoracic echocardiography to evaluate ventricular systolic and diastolic function, valves, chamber size, and shunts. PubMedPubMedDiagnosing heart failure - Chronic Heart Failure in Adults - NCBI Bookshelf
Classify by LVEF: HFrEF at 40% or less, HFmrEF above 40% to below 50%, HFpEF at 50% or greater, and HF with recovered EF when a previously reduced EF improves to at least 50%. These categories guide evidence application but do not define etiology or filling pressures. AHA JournalsAHA Journals2021 ACC/AHA Key Data Elements and Definitions for Heart Failure: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Data Standards (Writing Committee to Develop Clinical Data Standards for Heart Failure)
Use natriuretic peptides to support or weaken diagnostic probability, recognizing that age, renal dysfunction, tachycardia, right-sided pressure overload, hypoxemia, sepsis, COPD, diabetes, and cirrhosis can elevate values; obesity and treatment with diuretics, ACE inhibitors, ARBs, beta blockers, or mineralocorticoid receptor antagonists can lower them. PubMedPubMedDiagnosing heart failure - Chronic Heart Failure in Adults - NCBI Bookshelf
If echocardiography is nondiagnostic or image quality is inadequate, cardiac MRI can clarify ventricular structure, function, scar, inflammation, or infiltrative disease; CT is an alternative when echo is limited and CMR is unavailable or contraindicated. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Treatment
Build phenotype-directed long-term therapy
Separate symptom relief from therapies that alter morbidity and mortality.
The supplied U.S. heart failure guideline is the principal source for patient-centered prevention, diagnosis, and management recommendations, but detailed drug dose tables are not available in the provided search excerpts. Therefore, this review names core medication classes without adding unsupported dose or titration schedules. AHA JournalsAHA Journals2022 AHA/ACC/HFSA Guideline for the Management of ...
In HFrEF, foundational therapy includes renin-angiotensin system modulation with an ARNI or other appropriate RAAS-directed therapy, an evidence-based beta blocker, a mineralocorticoid receptor antagonist, and an SGLT2 inhibitor. The 2022 AHA/ACC/HFSA guideline is the key U.S. reference for selection, sequencing, eligibility, and monitoring. AHA JournalsAHA Journals2022 AHA/ACC/HFSA Guideline for the Management of ...
Sacubitril/valsartan is FDA-indicated to reduce cardiovascular death and heart failure hospitalization in adults with chronic heart failure, with benefit most clearly evident when LVEF is below normal. The usual adult starting dose is 49/51 mg orally twice daily, titrated every 2 to 4 weeks as tolerated to 97/103 mg twice daily; begin at half the usual starting dose for severe renal impairment, moderate hepatic impairment, or no/low prior ACE inhibitor or ARB exposure. Do not coadminister with an ACE inhibitor; allow a 36-hour washout when switching from an ACE inhibitor. accessdata fdaaccessdata fdaENTRESTO® (sacubitril and valsartan) tablets, for oral use ...
Metoprolol succinate is FDA-indicated for stable symptomatic NYHA II or III heart failure. Start 25 mg once daily for 2 weeks in NYHA II or 12.5 mg once daily in more severe heart failure, then double every 2 weeks to the highest tolerated dose or 200 mg daily. Stabilize other heart failure therapy first; with transient worsening heart failure, intensify diuresis and restore clinical stability before further titration. Avoid abrupt discontinuation. accessdata fdaaccessdata fdaMetoprolol succinate - accessdata.fda.gov
Monitor blood pressure, renal function, potassium, heart rate, volume status, and symptom trajectory during initiation and titration of disease-modifying therapy. Sacubitril/valsartan can cause hypotension, hyperkalemia, renal dysfunction, and angioedema. accessdata fdaaccessdata fdaENTRESTO® (sacubitril and valsartan) tablets, for oral use ...
Use loop diuretics for congestion. Thiazide-like diuretics such as chlorthalidone can cause hypokalemia, hyponatremia, hypomagnesemia, hyperuricemia, hyperglycemia, and acute kidney injury from hypovolemia; monitor renal function and electrolytes. nctr-crs fdanctr-crs fdaThese highlights do not include all the information needed to use HEMICLOR<sup>TM </sup>safely and effectively. See full prescribing information for HEMICLOR.<br/> <br/>HEMICLOR (chlorthalidone) tablets, for oral use<br/>Initial U.S. Approval: 1960
Dapagliflozin labeling includes warnings for ketoacidosis and volume depletion; review full prescribing information when selecting an SGLT2 inhibitor, especially in patients with diabetes, reduced intake, acute illness, or diuretic-associated volume depletion. fdafdaFDA Approves First Generic Dapagliflozin Tablets | FDA
| Agent | Use and dosing | Key safety actions |
|---|---|---|
| Sacubitril/valsartan | Chronic heart failure: start 49/51 mg twice daily; double after 2-4 weeks as tolerated to 97/103 mg twice daily. Use half the usual starting dose with severe renal impairment, moderate hepatic impairment, or no/low prior ACE inhibitor or ARB exposure. accessdata fdaaccessdata fdaENTRESTO® (sacubitril and valsartan) tablets, for oral use ... | Contraindicated with ACE inhibitors and in prior ACE inhibitor- or ARB-related angioedema; require 36-hour ACE inhibitor washout. Monitor potassium and renal function. accessdata fdaaccessdata fdaENTRESTO® (sacubitril and valsartan) tablets, for oral use ... |
| Metoprolol succinate | Stable symptomatic NYHA II-III heart failure: 25 mg once daily for NYHA II or 12.5 mg once daily for more severe heart failure; double every 2 weeks to highest tolerated dose or 200 mg daily. accessdata fdaaccessdata fdaMetoprolol succinate - accessdata.fda.gov | Do not initiate in decompensated heart failure. Monitor for bradycardia and worsening congestion during titration; taper over 1-2 weeks if discontinuing chronic therapy. accessdata fdaaccessdata fdaMetoprolol succinate - accessdata.fda.gov |
Acute congestion and decompensation
Acute pulmonary edema or pulmonary congestion requires rapid assessment of oxygenation, perfusion, blood pressure, ischemia, arrhythmia, renal function, and precipitating causes. Invasive hemodynamics may be useful when noninvasive testing does not resolve diagnostic uncertainty or when refractory symptoms require precise characterization of filling pressures, cardiac output, and pulmonary pressures. AHA Journals+1AHA Journals2021 ACC/AHA Key Data Elements and Definitions for Heart Failure: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Data Standards (Writing Committee to Develop Clinical Data Standards for Heart Failure)AHA Journals2022 AHA/ACC/HFSA Guideline for the Management of ...
Avoid routine initiation of high-dose extended-release metoprolol immediately before noncardiac surgery; perioperative initiation in a trial was associated with more bradycardia, hypotension, stroke, and death. Chronic beta-blocker therapy should not routinely be withdrawn before major surgery. accessdata fdaaccessdata fdaMetoprolol succinate - accessdata.fda.gov
For patients treated with sacubitril/valsartan who develop hypotension, address volume depletion and reconsider concomitant diuretics or antihypertensives before permanent discontinuation when feasible. accessdata fdaaccessdata fdaENTRESTO® (sacubitril and valsartan) tablets, for oral use ...
Etiology matters
Modify treatment when cardiomyopathy physiology changes the risk
Heart failure management changes substantially when obstruction, infiltrative disease, or systolic decline is present.
In obstructive hypertrophic cardiomyopathy, dynamic outflow obstruction is sensitive to preload, afterload, and contractility. A peak LVOT gradient of at least 30 mm Hg defines obstruction; resting or provoked gradients of at least 50 mm Hg are generally considered capable of causing symptoms and are the threshold for advanced pharmacologic or invasive strategies when symptoms are refractory. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
For symptomatic obstructive hypertrophic cardiomyopathy, nonvasodilating beta blockers are first-line. Verapamil or diltiazem are alternatives. Persistent symptoms despite first-line therapy may prompt consideration of a cardiac myosin inhibitor in adults, disopyramide with an AV nodal blocking agent, or septal reduction therapy at an experienced HCM center. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Avoid or reconsider pure vasodilators, high-dose diuretics, and positive inotropes in symptomatic obstructive hypertrophic cardiomyopathy because reduced preload or afterload and increased contractility can worsen obstruction. Low-dose diuretics may be used cautiously for persistent congestive symptoms. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Mavacamten reduces contractility and can reduce LVEF. In HCM, interrupt cardiac myosin inhibitor therapy if LVEF falls below 50%; restart at a lower dose only if LVEF recovers. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
For HCM with persistent systolic dysfunction defined by LVEF below 50%, evaluate alternative contributors including coronary disease, valvular disease, metabolic disease, and phenocopies, and apply HFrEF guideline-directed therapy as tolerated. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Consider referral to a comprehensive HCM center for complex diagnosis, genetic counseling, ICD decisions, septal reduction therapy, advanced heart failure therapies, or management of refractory arrhythmias. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
| Finding | Clinical implication | Action |
|---|---|---|
| Resting or provoked LVOT gradient ≥50 mm Hg with attributable symptoms | Hemodynamically important obstruction is likely. | Use nonvasodilating beta blocker first; escalate to disopyramide, adult myosin inhibitor, or septal reduction therapy if refractory. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ... |
| Congestion with obstructive physiology | Diuresis may relieve symptoms but can worsen obstruction by reducing preload. | Use low-dose diuretics cautiously and reassess symptoms, blood pressure, and gradient. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ... |
| LVEF <50% during myosin inhibitor therapy | Potential drug-related systolic dysfunction. | Interrupt therapy; consider lower-dose restart only after recovery. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ... |
Longitudinal care
Monitor trajectory and refer before advanced disease becomes irreversible
Serial assessment should detect congestion, arrhythmia, progressive dysfunction, and advanced-therapy eligibility.
Follow-up should include symptoms, NYHA class, blood pressure, heart rate and rhythm, weight and volume status, renal function, electrolytes, medication tolerance, and adherence. Heart failure data standards also identify functional assessment, patient-reported outcomes, cardiopulmonary exercise testing, rhythm monitoring, and invasive hemodynamics as appropriate tools in selected patients. AHA JournalsAHA Journals2021 ACC/AHA Key Data Elements and Definitions for Heart Failure: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Data Standards (Writing Committee to Develop Clinical Data Standards for Heart Failure)
In hypertrophic cardiomyopathy, serial transthoracic echocardiography every 1 to 2 years in asymptomatic patients can assess changes in systolic and diastolic function, wall thickness, chamber size, LVOT obstruction, and valvular disease. Ambulatory ECG monitoring every 1 to 2 years is reasonable for arrhythmia surveillance in patients without ICDs. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Advanced heart failure develops in an estimated 3% to 8% of patients with hypertrophic cardiomyopathy. Refer for transplant evaluation when severe symptoms or recurrent ventricular arrhythmias persist despite optimized medical therapy and septal reduction is not an option; preserved EF does not exclude advanced restrictive physiology or transplant candidacy. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Use cardiopulmonary exercise testing when evaluating severe symptoms or transplant candidacy; reduced peak oxygen consumption, impaired ventilatory efficiency, and abnormal anaerobic threshold are associated with adverse outcomes in HCM. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
For atrial fibrillation in HCM, oral anticoagulation is generally the default irrespective of CHA2DS2-VASc score because thromboembolic risk is elevated; direct oral anticoagulants are supported as at least as effective as warfarin in observational data. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Reassess sudden cardiac death risk in HCM every 1 to 2 years. Risk assessment incorporates prior cardiac arrest or sustained ventricular arrhythmia, family history, unexplained syncope, ventricular wall thickness, apical aneurysm, LVEF, ambulatory NSVT, and CMR fibrosis. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Common questions
What establishes a diagnosis of heart failure?
Diagnosis requires compatible clinical symptoms or signs plus evidence of relevant structural or functional cardiac abnormality; a reduced LVEF alone is insufficient. AHA Journals+1AHA Journals2021 ACC/AHA Key Data Elements and Definitions for Heart Failure: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Data Standards (Writing Committee to Develop Clinical Data Standards for Heart Failure)PubMedDiagnosing heart failure - Chronic Heart Failure in Adults - NCBI Bookshelf
How should suspected heart failure be evaluated initially?
Use history, examination, ECG, laboratories for reversible contributors, natriuretic peptide testing when appropriate, and transthoracic echocardiography to define function, structure, valves, and shunts. PubMedPubMedDiagnosing heart failure - Chronic Heart Failure in Adults - NCBI Bookshelf
When should sacubitril/valsartan not be used?
Do not use with an ACE inhibitor or within 36 hours of ACE inhibitor exposure, in patients with prior ACE inhibitor- or ARB-related angioedema, or with aliskiren in diabetes. Monitor renal function and potassium. accessdata fdaaccessdata fdaENTRESTO® (sacubitril and valsartan) tablets, for oral use ...
When should patients with hypertrophic cardiomyopathy be referred to an expert center?
Refer for complex diagnostic or genetic issues, difficult ICD decisions, refractory obstruction, septal reduction therapy, complex arrhythmia management, or advanced heart failure and transplant assessment. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
Can advanced heart failure occur with preserved ejection fraction?
Yes. In hypertrophic cardiomyopathy, restrictive physiology can produce severe heart failure despite preserved EF; advanced therapy and transplant referral should be based on clinical trajectory, not EF alone. AHA JournalsAHA Journals2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ...
References
- prescribing information - accessdata.fda.gov — www.accessdata.fda.gov · www.accessdata.fda.gov
- ENTRESTO® (sacubitril and valsartan) tablets, for oral use ... — www.accessdata.fda.gov · www.accessdata.fda.gov
- Metoprolol succinate - accessdata.fda.gov — www.accessdata.fda.gov · www.accessdata.fda.gov
- FDA Approves First Generic Pimobendan for Management of Congestive Heart Failure in Dogs | FDA — www.fda.gov · www.fda.gov
- These highlights do not include all the information needed to use VALSARTAN TABLETS safely and effectively. See full prescribing information for VALSARTAN TABLETS. <br/> <br/> <br/> <br/> VALSARTAN tablets, for oral use <br/> <br/> <br/> <br/> Initial U.S. Approval: 1996 — www.accessdata.fda.gov · www.accessdata.fda.gov
- FDA Approves First Generic Dapagliflozin Tablets | FDA — www.fda.gov · www.fda.gov
- These highlights do not include all the information needed to use HEMICLOR<sup>TM </sup>safely and effectively. See full prescribing information for HEMICLOR.<br/> <br/>HEMICLOR (chlorthalidone) tablets, for oral use<br/>Initial U.S. Approval: 1960 — nctr-crs.fda.gov · nctr-crs.fda.gov
- 2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for ... — www.ahajournals.org · www.ahajournals.org
- Get With The Guidelines-Heart Failure: Twenty Years in ... — www.ahajournals.org · www.ahajournals.org
- 2021 ACC/AHA Key Data Elements and Definitions for Heart Failure: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Data Standards (Writing Committee to Develop Clinical Data Standards for Heart Failure) — www.ahajournals.org · www.ahajournals.org
- 2022 AHA/ACC/HFSA Guideline for the Management of ... — www.ahajournals.org · www.ahajournals.org
- Prognosis of Heart Failure - an overview — www.sciencedirect.com · www.sciencedirect.com
- Endpoints in Heart Failure Drug Development — www.sciencedirect.com · www.sciencedirect.com
- Hydralazine Plus Isosorbide Dinitrate - an overview — www.sciencedirect.com · www.sciencedirect.com
- Prognostic impact of the coexistence of hepato-renal ... — www.sciencedirect.com · www.sciencedirect.com
- Changes in Mortality From Heart Failure -- United States, 1980-1995 — www.cdc.gov · www.cdc.gov
- Overview | Chronic heart failure in adults: diagnosis and management | Guidance | NICE — www.nice.org.uk · www.nice.org.uk
- ESC Clinical Practice Guidelines — www.escardio.org · www.escardio.org
- 2023 Focused Update on Heart Failure — www.escardio.org · www.escardio.org
- Heart Failure — www.escardio.org · www.escardio.org
- Clinical Policy: Critical Issues in the Evaluation and ... — www.annemergmed.com · www.annemergmed.com
- ESC 365 - Longitudinal patterns of guideline-directed medical therapy use in severe heart failure with reduced ejection fraction after hospitalization: insights from the CONNECT-HF trial — esc365.escardio.org · esc365.escardio.org
- Diagnosing heart failure - Chronic Heart Failure in Adults - NCBI Bookshelf — www.ncbi.nlm.nih.gov · www.ncbi.nlm.nih.gov
- Diagnostic Modalities in Heart Failure: A Narrative Review - PMC — pmc.ncbi.nlm.nih.gov · pmc.ncbi.nlm.nih.gov