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Related Concept Videos

Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

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...
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

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...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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...
Heart Failure VII: Nursing Interventions01:30

Heart Failure VII: Nursing Interventions

The first step in nursing management of a patient with heart failure involves thoroughly assessing the patient's medical history.Subjective Data: Obtain the patient's medical history of coronary artery disease, hypertension, myocardial infarction, and symptoms like dyspnea, orthopnea, and paroxysmal nocturnal dyspnea.Objective Data: Conduct a physical examination to identify findings such as jugular vein distention, pulmonary crackles, tachycardia, murmurs, peripheral edema, and vital signs,...

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Related Experiment Video

Updated: Jun 15, 2026

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
07:30

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions

Published on: April 23, 2021

Cognitive deficits in chronic heart failure.

Susan J Pressler1, Usha Subramanian, David Kareken

  • 1School of Nursing, University of Michigan, Ann Arbor, MI 48109, USA. spressle@umich.edu

Nursing Research
|March 11, 2010
PubMed
Summary

Heart failure (HF) significantly impairs cognitive functions like memory and executive function in nearly a quarter of patients. Cognitive deficits are linked to HF severity, particularly in older men.

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Area of Science:

  • Neurology
  • Cardiology
  • Psychology

Background:

  • Heart failure (HF) is associated with cognitive deficits, but the causes remain unclear, possibly linked to aging or comorbidities.
  • Investigating cognitive function in HF patients is crucial for understanding disease impact.

Purpose of the Study:

  • To determine the types, frequency, and severity of cognitive deficits in chronic HF patients compared to healthy and other medical controls.
  • To evaluate the relationship between HF severity, age, comorbidities, and cognitive deficits.

Main Methods:

  • A study involving 414 participants (249 HF patients, 165 controls) assessed HF severity, comorbidities, and neuropsychological functioning.
  • Neuropsychological tests measured memory, psychomotor speed, executive function, and visuospatial recall.
  • Clinical variables including blood pressure and oxygen saturation were recorded.

Main Results:

  • HF patients exhibited poorer memory, psychomotor speed, and executive function compared to controls.
  • 24% of HF patients had deficits in three or more cognitive domains.
  • Higher HF severity correlated with increased cognitive deficits, especially in executive function for older patients; men with HF showed poorer memory and visuospatial recall.

Conclusions:

  • Heart failure leads to significant cognitive decline in memory, psychomotor speed, and executive function for a substantial portion of patients.
  • Patients with severe HF are at higher risk for cognitive deficits, with older males being particularly vulnerable.
  • Further research is needed to elucidate the mechanisms of cognitive impairment in HF and develop interventions.