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Related Concept Videos

Heart Failure I: Introduction01:27

Heart Failure I: Introduction

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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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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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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.
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Mitral Regurgitation I: Introduction01:20

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Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
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Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

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Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
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Relationship with Other Adult Family Members and Siblings01:29

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Other adult family members and siblings play a crucial role in shaping children’s social and emotional development. While parents or primary caregivers are often the central figures in early attachment and socialization, other adults in a child’s life, such as grandparents, aunts, and uncles, can significantly influence developmental outcomes. These influences depend on each adult’s personality and may help compensate when a primary caregiver is emotionally distant or...
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Related Experiment Video

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Mortality risks associated with sibling heart failure.

Magnus P Lindgren1, Jianguang Ji1, J Gustav Smith2

  • 1Center for Primary Health Care Research, Lund University and Region Skåne, Malmö, Sweden.

International Journal of Cardiology
|November 19, 2019
PubMed
Summary

Individuals with a sibling history of heart failure (HF) face increased mortality risk, especially with early-onset HF. This highlights potential genetic links and the need for cardiovascular screening in affected families.

Keywords:
EpidemiologyFamily historyGeneticsHeart failureMortality

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Area of Science:

  • Cardiovascular Medicine
  • Genetics
  • Public Health

Background:

  • Family history of heart failure (HF) is a known risk factor, but its impact on mortality is not fully understood.
  • Previous studies have not comprehensively assessed mortality risks associated with having a sibling with HF.

Purpose of the Study:

  • To determine the mortality risk in individuals with a sibling affected by heart failure (HF).
  • To investigate the influence of early-onset HF in siblings on overall and cause-specific mortality.

Main Methods:

  • A nationwide sib-pair study utilizing Swedish population registers (1987-2012).
  • Exclusion of families with cardiomyopathy or congenital heart disease.
  • Calculation of mortality hazard ratios (HRs) for siblings of HF patients compared to controls, analyzing overall, cardiovascular, and unknown cause mortality.

Main Results:

  • Siblings of HF patients had a 21% increased overall mortality risk (HR 1.21).
  • This increased risk persisted even in individuals without HF themselves (HR 1.19).
  • Early-onset HF (<50 years) in a sibling significantly elevated mortality risks for overall, cardiovascular, and unknown causes.

Conclusions:

  • Sibling history of HF, particularly early-onset, is linked to significantly increased mortality.
  • The lower risk observed in spouses suggests a potential role for genetic factors in HF heritability.
  • Targeted screening for HF and cardiovascular disease in individuals with a sibling history of HF may be beneficial.