Congestive heart failure epidemiology and demographics

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Congestive Heart Failure Microchapters
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Overview
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Pathophysiology Systolic Dysfunction Diastolic Dysfunction HFpEF HFrEF
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Differentiating Congestive heart failure from other Diseases
Epidemiology and Demographics
Risk Factors
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Natural History, Complications and Prognosis
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Medical Therapy:
Summary
Acute Pharmacotherapy
Chronic Pharmacotherapy in HFpEF
Chronic Pharmacotherapy in HFrEF Diuretics ACE Inhibitors Angiotensin receptor blockers Aldosterone Antagonists Beta Blockers Ca Channel Blockers Nitrates Hydralazine Positive Inotropics Anticoagulants Angiotensin Receptor-Neprilysin Inhibitor Antiarrhythmic Drugs Nutritional Supplements Hormonal Therapies Drugs to Avoid Drug Interactions Treatment of underlying causes Associated conditions
Exercise Training
Surgical Therapy: Biventricular Pacing or Cardiac Resynchronization Therapy (CRT) Implantation of Intracardiac Defibrillator Ultrafiltration Cardiac Surgery Left Ventricular Assist Devices (LVADs) Cardiac Transplantation
ACC/AHA Guideline Recommendations Initial and Serial Evaluation of the HF Patient Hospitalized Patient Patients With a Prior MI Sudden Cardiac Death Prevention Surgical/Percutaneous/Transcather Interventional Treatments of HF Patients at high risk for developing heart failure (Stage A) Patients with cardiac structural abnormalities or remodeling who have not developed heart failure symptoms (Stage B) Patients with current or prior symptoms of heart failure (Stage C) Patients with refractory end-stage heart failure (Stage D) Coordinating Care for Patients With Chronic HF Quality Metrics/Performance Measures
Implementation of Practice Guidelines
Congestive heart failure end-of-life considerations
Specific Groups: Special Populations Patients who have concomitant disorders Obstructive Sleep Apnea in the Patient with CHF NSTEMI with Heart Failure and Cardiogenic Shock
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Saleh El Dassouki, M.D [3]; Atif Mohammad, M.D.

Overview

Heart failure affects close to 5 million people in the United States of America and each year close to 500,000 new cases are diagnosed. Congestive heart failure is responsible for a significant portion of the healthcare budget, and more than 50% of patients seek re-admission within 6 months after treatment and the average duration of hospital stay is 6 days.

Epidemiology and Demographics

Prevalence

In 2005 the prevalence among adults aged 20 and older in the United States was 5,300,000 (about 2,650,000 males, and 2,650,000 females).

Incidence

• Data from the NHLBI’s Framingham Heart Study indicate that;

1. Heart failure (HF) incidence approaches 10 per 1,000 population after age 65.
2. 75% of heart failure cases have antecedent hypertension. About 22% of male and 46% of female myocardial infarction (MI) victims will be disabled with heart failure within 6 years of the index event.
   • At age 40, the lifetime risk of developing heart failure for both men and women is 1 in 5.
   • At age 40, the lifetime risk of heart failure occurring without antecedent myocardial infarction is 1 in 9 for men and 1 in 6 for women.
   • The lifetime risk doubles for people with blood pressure >160/90 mm Hg compared to those with blood pressure <140/90 mm Hg.

• A study conducted in Olmsted County, Minnesota, showed that the incidence of heart failure (ICD9/428) has not declined during two decades, but survival after onset has increased overall, with less improvement among women and elderly persons.

Age

Heart failure is the leading cause of hospitalization in people older than 65. In developed countries, the mean age of patients with heart failure is 75 years old. In developing countries, two to three percent of the population suffers from heart failure, but in those 70 to 80 years old, it occurs in 20—30 percent.

Gender

Men have a higher incidence of heart failure, but the overall prevalence rate is similar in both sexes, since women survive longer after the onset of heart failure. Women tend to be older when diagnosed with heart failure (after menopause), they are more likely than men to have diastolic dysfunction, and seem to experience a lower overall quality of life than men after diagnosis.

Race

New information suggests that elements of heart failure in African Americans and Caucasians may be different and therapy for heart failure has different efficacies depending on racial, ethnic, and genetic backgrounds. Blacks have the highest risk for HF. In the Atherosclerosis Risk In Communities (ARIC) study, black men were found to have the highest risk, while white women were found to have the lowest risk.

Country Specific Causes

In tropical countries, the most common cause of HF is valvular heart disease or some type of cardiomyopathy. Moreover as underdeveloped countries become more affluent, there has also been an increase in diabetes, hypertension and obesity which has resulted in heart failure.

In USA, HF is much higher in African Americans, Hispanics, Native Americans and recent immigrants from the eastern bloc countries like Russia. This high prevalence in these ethnic populations has been linked to high incidence of diabetes and hypertension. In many new immigrants to the USA the high prevalence of heart failure has largely been attributed to lack of preventive health care or substandard treatment.

Costs

In the United States, HF costs exceed $40 billion, taking into consideration the cost of medications, healthcare services and lack of productivity. It's noteworthy that HF is respsonsible for 1 in 9 deaths in the United States.

References

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