Normal heart function
The heart is divided into four chambers: two on the right and two on the left. To pump blood throughout the body, the heart uses the left and right sides for various tasks. The right side of the heart moves blood to the lungs. In the lungs, the blood picks up oxygen and then returns it to the left side of the heart. Then the left side of the heart pumps blood through the aorta to the rest of the body.
The heart has two upper and two lower chambers. In the upper chambers, the right and left Atria receives blood. The lower chambers, the right and left ventricles, pump blood out of your heart. Heart valves serve as gates that allow blood to flow in the right direction.
Why do heart defects develop?
Doctors know that heart defects present at birth (congenital) occur due to errors at an early stage of heart development, but often there is no clear cause. Genetics and environmental factors can play a role.
How does the heart work with atrial septal defect? A large atrial septal defect can cause excessive blood to overflow the lungs and overload the right side of the heart. If left untreated, the right side of the heart increases and weakens over time. Blood pressure in the lungs can also rise, leading to pulmonary hypertension.
An atrial septal defect is an abnormal opening between the upper chambers of the heart. Common congenital heart disease.
There are several types of atrial septal defects, including:
Secundum or “secondary”. This is the most common type of dmpp that occurs in the middle of the wall between the Atria (the atrial septum).
Primum or “primary”. This defect occurs in the lower part of the atrial septum and can occur with other congenital heart defects.
The defect of venous sinus. This rare defect usually occurs in the upper part of the atrial septum and is often associated with other congenital heart problems.
A defect in the coronary sinus. In this rare defect, part of the wall between the coronary sinus, which is part of the heart’s vein system, and the left atrium is missing.