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Related Concept Videos

Heart Valves01:16

Heart Valves

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The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
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Cardiovascular System Abnormal Findings II: Auscultation01:25

Cardiovascular System Abnormal Findings II: Auscultation

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Auscultation, an essential part of a heart examination, is done using a stethoscope. It provides crucial information about heart function and possible heart problems. Due to heart problems, abnormal sounds can be heard during systole or diastole. These sounds include S3 and S4 gallops, opening snaps, systolic clicks, and murmurs.
Abnormal Heart Sounds
Gallops:
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Disturbances in Heart Rhythm01:28

Disturbances in Heart Rhythm

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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow...
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Heart Sounds01:15

Heart Sounds

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Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V)...
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Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

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Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
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Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

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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.
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...
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Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
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Acute Heart Valve Emergencies.

Ryan R Keane1, Venu Menon1, Paul C Cremer1

  • 1Department of Cardiovascular Medicine, Cleveland Clinic Coordinating Center for Clinical Research, Heart Vascular and Thoracic Institute, 9500 Euclid Ave: Desk J1-5, Cleveland, OH 44195, USA.

Cardiology Clinics
|April 17, 2024
PubMed
Summary
This summary is machine-generated.

Prompt recognition of severe acute valvular lesions in the cardiac intensive care unit is crucial. Understanding hemodynamic changes and causes of heart failure is key for timely management and treatment strategies.

Keywords:
Acute aortic regurgitationAcute mitral regurgitationCICUSevere aortic stenosisSevere mitral stenosisTricuspid regurgitationTricuspid stenosisValvular emergency

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Area of Science:

  • Cardiology
  • Intensive Care Medicine
  • Echocardiography

Background:

  • Severe acute valvular lesions can lead to rapid hemodynamic collapse in cardiac intensive care units.
  • Lack of compensatory remodeling in cardiac chambers exacerbates the risk of decompensation.
  • Distinguishing acute from chronic valvular lesions is critical for appropriate management.

Purpose of the Study:

  • To address optimal medical management for severe acute valvular lesions.
  • To discuss considerations for temporary mechanical circulatory support.
  • To outline decisive treatment strategies for acute valvular abnormalities.

Main Methods:

  • Review of fundamental concepts in hemodynamic and echocardiographic assessment.
  • Analysis of sudden changes in flow and pressure gradients.
  • Understanding causes of decompensated heart failure and cardiogenic shock.

Main Results:

  • Acute valvular lesions present distinct hemodynamic and echocardiographic findings compared to chronic lesions.
  • Sudden hemodynamic shifts significantly impact patient presentation.
  • Specific valvular abnormalities have unique etiological pathways to heart failure and shock.

Conclusions:

  • Early identification and management of acute valvular lesions are vital in the cardiac intensive care setting.
  • A thorough understanding of hemodynamic principles and echocardiographic data is essential for effective treatment.
  • Tailored strategies for medical management, circulatory support, and definitive treatment are necessary for improved patient outcomes.