Evaluation of Left-Sided Heart Chambers With Novel Echocardiographic Techniques in Men With Duchenne or Becker

Raphael Henrique Déa Cirino1, Rosana Herminia Scola2, Renata Dal-Prá Ducci3

  • 1Cardiology Division, Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Parana, Brazil.

Insights

Two-dimensional echocardiography effectively evaluates heart structure in Duchenne (DMD) and Becker (BMD) muscular dystrophy patients. Myocardial strain analysis using this method detects early left ventricular systolic dysfunction (LVSD) in a significant number of these patients.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Genetics

Background:

  • Left ventricular systolic dysfunction (LVSD) is prevalent in Duchenne (DMD) and Becker (BMD) muscular dystrophies.
  • Echocardiography is crucial for assessing cardiac function in these patients.

Purpose of the Study:

  • To compare cardiac imaging data from 3D and 2D echocardiography in DMD and BMD patients.
  • To evaluate myocardial strain for early LVSD detection in DMD and BMD.

Main Methods:

  • Cross-sectional study of 46 DMD and 14 BMD patients.
  • Utilized 3D and 2D echocardiography for cardiac measurements.
  • Assessed global longitudinal strain (GLS) via 2D speckle tracking.

Main Results:

  • Strong correlation between 3DE and 2DE for chamber volume measurements.
  • 2DE showed larger chamber volumes, but ejection fraction was similar between techniques.
  • Myocardial strain detected early LVSD in 50% of DMD and 9.1% of BMD patients.

Conclusions:

  • 2D echocardiography is a viable tool for cardiac evaluation in DMD and BMD.
  • Myocardial strain analysis effectively identifies early LVSD in dystrophinopathies.

Related Concept Videos

Satellite Stem Cells and Muscular Dystrophy01:21

Satellite Stem Cells and Muscular Dystrophy

Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
2.4K
Chambers of the Heart01:16

Chambers of the Heart

The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
Deoxygenated blood from the body is received in the right...
10.5K
The Muscular System01:18

The Muscular System

The muscular system is essential to the body's overall structure and function, playing a crucial role in movement, stability, and internal processes. It consists of three distinct types of muscle tissue: the skeletal, the smooth, and the cardiac muscles.
7.1K
Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
687
Anatomy of the Heart01:27

Anatomy of the Heart

The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
119.7K
Anatomy of the Heart01:20

Anatomy of the Heart

The heart is a hollow, muscular organ approximately the size of a fist, consisting of four chambers. It is enclosed in the pericardium, a fibrous sac with two layers: the visceral and parietal pericardium, separated by a fluid-filled space containing serous fluid to reduce friction.
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
3.1K