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Related Concept Videos

Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
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Pathophysiology of Heart Failure01:17

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Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
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Heart Failure I: Introduction01:27

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Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
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Heart Failure VI: Adjunct Therapies01:22

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Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
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Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
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Heart Failure V: Medical Management01:30

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Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
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Accelerometer-Measured Daily Activity Levels and Related Factors in Patients With Heart Failure.

Bunny J Pozehl1, Rita Mcguire, Kathleen Duncan

  • 1Bunny J. Pozehl, PhD, APRN-NP, FHFSA, FAHA, FAAN Professor, University of Nebraska, Medical Center, College of Nursing, Omaha. Rita McGuire, PhD, RN Assistant Professor, University of Nebraska Medical Center, College of Nursing, Lincoln. Kathleen Duncan, PhD, RN Associate Professor, University of Nebraska, Medical Center, College of Nursing, Lincoln. Melody Hertzog, PhD Associate Professor, University of Nebraska, Medical Center, College of Nursing, Lincoln. Pallav Deka, PhD, AGACNP-BC Assistant Professor, University of South Dakota, School of Health Sciences-Nursing, Sioux Falls. Joseph Norman, PhD, PT Professor, University of Nebraska, Medical Center, College of Allied Health, Omaha. Nancy T. Artinian, PhD, RN, FAHA, FAAN Visiting Professor, Michigan State University, East Lansing. Matthew A. Saval, MS, ACSM-RCEP Research Program Manager, Preventive Cardiology, Henry Ford Hospital, Detroit, Michigan. Steven J. Keteyian, PhD Director, Preventive Cardiology, Henry Ford Hospital, Detroit, Michigan.

The Journal of Cardiovascular Nursing
|March 15, 2018
PubMed
Summary

Patients with heart failure (HF) show low daily physical activity, with most not meeting the recommended 150 minutes of moderate-to-vigorous physical activity (MVPA) weekly. Factors like sex, race, and physical function influence activity levels.

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Area of Science:

  • Cardiology
  • Exercise Physiology
  • Rehabilitation Medicine

Background:

  • Limited objective data exists on daily physical activity in heart failure (HF) patients.
  • Accelerometer-measured physical activity provides objective insights into patient behavior.

Purpose of the Study:

  • To examine baseline physical activity levels in HF patients using accelerometers.
  • To identify factors associated with physical activity in this population.

Main Methods:

  • 182 patients with diagnosed HF (Stage C) participated.
  • 7-day accelerometer measurements (Actigraph GT3X) assessed physical activity energy expenditure and minutes of moderate-to-vigorous physical activity (MVPA).
  • Health-related factors were measured to explore associations with activity levels.

Main Results:

  • Patients averaged 10.2 minutes of MVPA daily, with only 12.6% meeting the 150-minute weekly recommendation.
  • Average daily energy expenditure was 304 kcal.
  • Higher activity levels were observed in men, white individuals, NYHA class II patients, and those with better physical function.

Conclusions:

  • Heart failure patients consistently fail to meet recommended physical activity guidelines.
  • Objective measurement highlights a significant gap in recommended MVPA for HF patients.