What is the couse of hole in heart?!

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I think it is a medical mistake or error causing it. The holes are there in all hearts pre-natal for the purpose of absorbing the oxygen laden blood from the mother direct to the baby's heart.. After the child takes its first breathing of the atmospheric air on delivery, it starts regularizing its heart beat and with this regularization of the heart beat, the hole is supposed to be closed. The umbilical chords are cut after this regularization of the heart beat. The obstetricians of the olden times knew exactly the time gap which is required for this to close. The present set of modern doctors who usually do the cesarean sections are either in a haste or not well informed that the umbilical chords are cut with some amount of hurry than required. Probably, the stabilization of the heart does not take place adequately and the holes, therefore, remain open due to inadequate lung pressure. With malaise to none.

Some comments:
An ASD is NOT due to the failure of the ostium secundum (the hole between the atria in a fetus) to close. This hole is covered by a flap, which acts as a one-way valve (blood flows from the right atrium into the left), and (along with the ductus arteriosus) allows fetal blood bypass the lungs (since a fetus doesn't breathe). With birth the lungs inflate, the pressure in the RA drops below that in the left and the one-way valve closes (but can open again later, if the atrial pressures change, in as many as 1/3 of adults). An ASD is an entirely separate defect in the atrial wall.
Therefore, clearly there is no relation between when the umbilical cord is cut and ASDs.
And the heart definitely IS pumping in the fetus. It's only the lungs that are not functioning in utero.

A hole in the heart means atrial septal defect, ventricular septal defect or atrioventricular defect.
The cause of congenital heart disease may be either genetic or environmental, but is usually a combination of both.

http://en.wikipedia.org/wiki/Atrial_sept…
http://www.nlm.nih.gov/medlineplus/ency/…
http://en.wikipedia.org/wiki/Ventricular…
http://www.nlm.nih.gov/medlineplus/ency/…
http://en.wikipedia.org/wiki/Atrioventri…

A hole in the heart is a type of simple congenital heart defect – a problem with the heart's structure that is present at birth. Congenital heart defects change the normal flow of blood through the heart.

The heart has two sides, separated by an inner wall called the septum. With each heartbeat, the right side of the heart receives oxygen-poor blood from the body and pumps it to the lungs. The left side of the heart receives oxygen-rich blood from the lungs and pumps it to the body. The septum prevents mixing of blood between the two sides of the heart.

Some babies are born with a hole in the upper or lower septum. A hole in the septum between the heart's upper two chambers (the atria) is called an atrial septal defect (ASD). A hole in the septum between the heart's lower two chambers (the ventricles) is called a ventricular septal defect (VSD).

A hole in the septum can allow blood to pass from the left side of the heart to the right side. This means that oxygen-rich blood can mix with oxygen-poor blood, causing the oxygen-rich blood to be pumped to the lungs a second time.

Over the past few decades, the diagnosis and treatment of ASDs and VSDs have greatly improved. As a result, a child with a simple heart defect can grow to adulthood and live a normal, active, and productive life because his or her heart defect closes on its own or has been repaired.

http://www.daviddarling.info/encyclopedi…

I used this website!!

Mothers of children born with an atrial septal defect (ASD), a ventricular septal defect (VSD), or another type of heart defect often think that they did something wrong during the pregnancy to cause the problem. Heredity may play a role in some heart defects. For example, a parent who has a congenital heart defect is slightly more likely than other people to have a child with the problem. In very rare cases, more than one child in a family is born with a heart defect. Children with genetic defects often have congenital heart defects. An example of this is Down's syndrome – half of all babies with Down syndrome have congenital heart defects.

before the baby is born there is a hole in the heart. This because the baby's heart really isn't pumping since it depends on the mothers heart for survival. after the baby is born and takes its first breath the hole is supposed to close between the chambers. In some cases this just doesn't happen.