Related Experiment Video

Updated: Oct 9, 2026

Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs
08:19

Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs

Published on: July 12, 2022

Transesophageal Echocardiographic Study of Right Atrial Myocardial Infarction and Myocardial Viability

Jesús Vargas-Barrón1, Angel Romero-Cárdenas, Nilda Espinola-Zavaleta

  • 1Department of Echocardiography, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Tlalpan, 14080 México, D.F., Mexico.

Echocardiography (Mount Kisco, N.Y.)
|February 15, 2001
PubMed

Insights

Dobutamine positively impacts atrial muscle movement, aiding in the assessment of right atrial myocardial viability. Echocardiography reveals that right atrial ischemia presents as abnormal wall motion, with dobutamine

Area of Science:

  • Cardiology
  • Echocardiography
  • Myocardial Physiology

Background:

  • Right atrial wall movement is crucial for cardiac function.
  • Assessing atrial myocardial viability is important in diagnosing heart conditions.

Purpose of the Study:

  • To investigate the effects of dobutamine on right atrial wall movement.
  • To evaluate dobutamine's role in assessing atrial myocardial viability.

Main Methods:

  • Transesophageal echocardiography was used in two patient groups.
  • Group A: six patients without ischemic heart disease.
  • Group B: six patients with inferior wall infarction and abnormal right atrial movement.

Main Results:

  • Dobutamine increased right atrial movement amplitude in healthy patients.
  • In patients with right atrial infarction, dobutamine's effect varied based on coronary patency.
  • Altered segmental atrial movement was observed in some infarction patients.

Conclusions:

  • Dobutamine exhibits a positive inotropic effect on atrial myocardium.
  • Right atrial ischemia is detectable via echocardiographic wall movement abnormalities.
  • Dobutamine can aid in evaluating atrial myocardial viability.

More Related Videos

Assessment of Right Ventricular Structure and Function in Mouse Model of Pulmonary Artery Constriction by Transthoracic Echocardiography10:33

Assessment of Right Ventricular Structure and Function in Mouse Model of Pulmonary Artery Constriction by Transthoracic Echocardiography

Published on: February 3, 2014

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure07:41

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

Published on: February 8, 2022

Related Concept Videos

Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for diagnosing...
Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

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, evaluates...
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...