Related Experiment Video
Updated: Feb 8, 2026
07:26
Studying Left Ventricular Reverse Remodeling by Aortic Debanding in Rodents
Published on: July 14, 2021
5.6K
Is mitral annular ascent useful in studying left ventricular function through left atrio-ventricular interactions?
Paula M Hernández Burgos1, Francisco Lopez Menedez2, Maria D Candales3
1University of Puerto Rico School of Medicine, Medical Sciences Campus, San Juan, Puerto Rico, United States.
Indian Heart Journal
|July 3, 2018
Summary
M-mode evaluation of mitral annulus (MA) longitudinal motion, specifically MA excursion during systole (MAPSE), is useful for assessing atrio-ventricular interactions. Left ventricular ejection fraction and diastolic dysfunction significantly impact MA motion.
Area of Science:
- Cardiology
- Echocardiography
- Cardiac Mechanics
Background:
- The mitral annulus (MA) is a dynamic cardiac structure essential for proper heart function.
- Understanding MA motion aids in evaluating the complex interactions between the atria and ventricles.
Purpose of the Study:
- To determine if M-mode echocardiography of MA longitudinal motion can assess atrio-ventricular interactions.
- To identify echocardiographic determinants of MA motion.
Main Methods:
- Evaluated echocardiographic data from 150 patients.
- Assessed the relationship between MA motion and atrio-ventricular interaction measures.
Main Results:
- Left ventricular ejection fraction (LVEF) and diastolic dysfunction (LVDD) are key determinants of MA excursion during systole (MAPSE) and after atrial contraction (MAa).
- MAPSE serves as a surrogate for LVEF, and MA excursion during systole primarily determines MAa.
- LV diastolic function impacts MAPSE more than MAa, with variations in MAa amplitude linked to LVDD type.
Conclusions:
- M-mode assessment of MA longitudinal motion is a novel tool for evaluating atrio-ventricular interactions.
- Further research is needed to correlate this longitudinal measure with circumferential rotational data.
Related Concept Videos
01:24Cardiac Catheterization III: Left Heart Catheterization
751
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...
751
01:25ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
587
Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
587
01:22Mitral Stenosis I: Introduction
680
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...
680
01:20Mitral Regurgitation I: Introduction
601
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...
601
01:27Anatomy of the Heart
120.0K
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.
120.0K
01:27Mitral Valve Prolapse I: Introduction
554
IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
554