Skip to main content

Two types of atrioventricular septal defect (AVSD) that can occur

 There are two general types of atrioventricular septal defect (AVSD) that can occur, depending on which structures are not formed correctly:

Complete AVSD

A complete AVSD occurs when there is a large hole in the center of the heart which allows blood to flow between all four chambers of the heart. This hole occurs where the septa (walls) separating the two top chambers (atria) and two bottom chambers (ventricles) normally meet. There is also one common atrioventricular valve in the center of the heart instead of two separate valves – the tricuspid valve on the right side of the heart and the mitral valve on the left side of the heart.

This common valve often has leaflets (flaps) that may not be formed correctly or do not close tightly. A complete AVSD arises during pregnancy when the common valve fails to separate into the two distinct valves (tricuspid and mitral valves) and when the septa (walls) that split the upper and lower chambers of the heart do not grow all the way to meet in the center of the heart.

Partial or Incomplete AVSD

A partial or incomplete AVSD occurs when the heart has some, but not all of the defects of a complete AVSD. There is usually a hole in the atrial wall or in the ventricular wall near the center of the heart. A partial AVSD usually has both mitral and tricuspid valves, but one of the valves (usually mitral) may not close completely, allowing blood to leak backward from the left ventricle into the left atrium.

Learn more about cardiology by top rated cardiologist in London - Dr Boon Lim

Labels:

Comments

Post a Comment

Popular posts from this blog

A-FIB VERSUS JUNCTIONAL RHYTHMS

. ATRIAL FIBRILLATION: On your rhythm strip, the two most important characteristics are: . 1) A rhythm that’s IRREGULARLY irregular (meaning there’s no way to predict the next beat) 2) No discernible P waves . In fact, if you notice an irregularly irregular rhythm and you’re having to convince yourself that you see P waves... it’s probably A-fib (multifocal atrial arrhythmias like WAP/MAT could fit the differential) . *In my opinion: Don’t get caught up in using fibrillation waves as an absolute criteria. Very fine A-fib can sometimes produce a near isoelectric line between beats. . JUNCTIONAL RHYTHMS: The pacemaker cells surrounding the AV junction are capable of initiating regular impulses but at a slightly slower natural rate than their sinus and atrial superiors. The heart is built this way so that when the pacemaker cells with the fastest intrinsic rates are in action, those below are suppressed and function primarily to pass along the impulse from above. . For these reasons, we s...
1 comment
Read more

The Pathway of Blood

Here’s a great illustration on the pathway of blood flow through the heart. It may seem easy...but you should know this cold as well as the cardiac anatomy, both of which will make procedures and understanding hemodynamics easier. . . . đŸ’™VENOUS BLOOD- Blood flows into the heart (into the right atrium) through two major veins (the superior and inferior vena cava) as well as from the coronary sinus (cardiac venous blood from the coronaries) and then out through the first AV valve (tricuspid valve) into the right ventricle. From there blood flows into the right ventricular outflow tract, across the first semilunar valve (pulmonic valve) and into the main and then left and right pulmonary arteries. Blood then enters the lungs to become oxygenated. . . . ❤️ARTERIAL BLOOD- now that blood is oxygenated flow goes from the lungs into the left atrium through 4 veins (usually) called the pulmonary veins. From the left atrium blood flows across the other AV valve (mitral valve) and into the left ...
Post a Comment
Read more

How to Stop Ectopic Beats

What is Ectopic Beats? According to Dr. Boon Lim - Ectopic beats are also known as Ectopic Heart Rhythm or cardiac ectopy. It is produced when the heart creates a premature beat, usually followed by a brief pause. Types of Ectopic Beats: 1. Premature Ventricular Contraction (PVC) 2. Premature Atrial Contraction (PAC) Causes Of Ectopic Beats There are different causes of Ectopic Beats. Some of these are  Excessive alcohol consumption Excessive caffine consumptionPrescription drugs Stress (which produces high adrenaline levels) Exercise Diarrhoea and vomitting, which may disturb electrolyte levels (typically low potassium levels) Heart muscle damage from a heart attack Heart enlargement (cardiomyopathy) Valvular heart disease, such as a floppy mitral valve (mitral valve prolapse) Symptoms of Ectopic Beats Following Can Be The Symptom of Ectopic Beats: your heart is fluttering you are hyper aware of your heartbeat you feel faint or ...
Post a Comment
Read more