Mitral Regurgitation - SevereThis is an example of severe mitral regurgitation which is caused by degeneration of the mitral valve leaflets. The first heart sound is normal. The second heart sound is widely split. Following the second heart sound there is a third heart sound gallop. There is a loud, rectangular, pansystolic murmur. There is a brief, rumbling, diamond-shaped diastolic murmur immediately following the third heart sound. In the anatomy video you can see the enlarged left atrium and left ventricle. You can see the turbulent blood flow from the left ventricle into the left atrium. This is the systolic murmur. You can see the brief turbulent blood flow from the left atrium to the left ventricle in diastole. This is caused by too much blood in the left atrium which forces blood back into the ventricle during diastole producing the flow rumble.
Half Speed Patient Sounds
The patient's position should be supine.
Auscultation TipsSystole:Rectangular, loud murmur
Diastole:S3 followed by a diamond shaped, brief murmur
Observe Cardiac Animation
Review the cardiac animation and notice the enlarged left atrium and left ventricle. Observe the turbulent blood flow from the left ventricle into the left atrium. This is the systolic murmur. You can see the brief turbulent blood flow from the left atrium to the left ventricle in diastole. This is caused by too much blood in the left atrium which forces blood back into the ventricle during diastole producing the flow rumble.
Return to Reference Guide Index Page
Authors and Sources
Authors and Reviewers
- ECG heart rhythm modules: Thomas O'Brien.
- ECG monitor simulation developer: Steve Collmann
12 Lead Course: Dr. Michael Mazzini, MD.
- Spanish language ECG: Breena R. Taira, MD, MPH
- Medical review: Dr. Jonathan Keroes, MD
- Medical review: Dr. Pedro Azevedo, MD, Cardiology
- Last Update: 11/8/2021
Electrocardiography for Healthcare Professionals, 5th Edition
Kathryn Booth and Thomas O'Brien
ISBN10: 1260064778, ISBN13: 9781260064773
McGraw Hill, 2019
Rapid Interpretation of EKG's, Sixth Edition
Cover Publishing Company
12 Lead EKG for Nurses: Simple Steps to Interpret Rhythms, Arrhythmias, Blocks, Hypertrophy, Infarcts, & Cardiac Drugs
Create Space Independent Publishing
Heart Sounds and Murmurs: A Practical Guide with Audio CD-ROM 3rd Edition
Elsevier-Health Sciences Division
Barbara A. Erickson, PhD, RN, CCRN
The Virtual Cardiac Patient: A Multimedia Guide to Heart Sounds, Murmurs, EKG
Jonathan Keroes, David Lieberman
Publisher: Lippincott Williams & Wilkin)
ISBN-10: 0781784425; ISBN-13: 978-0781784429
- Project Semilla, UCLA Emergency Medicine, EKG Training Breena R. Taira, MD, MPH
Mitral Regurgitation - Severe | Auscultation Cheat Sheet with Sounds & Video | #101