what do you think will happen if the blood from the right side on the heart mixes with the left side
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Answer:
How does a healthy heart work?
The heart is part of the circulatory system, which carries blood throughout the body. The heart is made of muscle and works like a pump to keep the blood moving through the blood vessels (arteries, veins, and capillaries).
The heart has 4 chambers — the right atrium and the left atrium (plural: atria) on top and the right and left ventricles on the bottom. The heart is divided by a solid wall called the septum into 2 sides: the right side sends blood to the lungs to get oxygen, while the left side of the heart moves oxygen-rich blood to the rest of the body through the aorta (the main artery in the heart).
Blood enters the heart through the right atrium and moves to the right ventricle, where it then moves through the pulmonary artery to the lungs to pick up oxygen. The newly oxygenated blood then enters the heart through the left atrium and moves to the left ventricle, where it is sent through the aorta to the rest of the body.
Stenosis (narrowing): The valve is not able to open completely. As a result, the heart has to work harder to pump blood through it.
Regurgitation: The valve does not close correctly and allows blood to leak backward.
Atresia: The valve is missing a hole for the blood to pass through. This is considered a more complex defect.
Pulmonary valve stenosis is the most common valve defect. In this defect, the flaps of the pulmonary valve don’t work properly — they are too thick, or they become stiff, or even fuse together, making it difficult for the blood to move to the lung via the pulmonary artery.
Children who have a pulmonary valve stenosis may have a heart murmur, an irregular sound heard during a heartbeat. Children who are born with a severe pulmonary valve stenosis may have such symptoms as fatigue, breathing problems, and trouble eating.
Pulmonary valve stenosis may also be accompanied by other defects, such as an ASD or patent ductus arteriosis (PDA). The ductus arteriosis is a blood vessel in the fetus that connects the aorta and the pulmonary artery. The ductus arteriosis usually closes within minutes or days of birth; if it does not close, it is called a patent (open) ductus arteriosis (PDA).
A PDA lets oxygenated blood and deoxygenated blood mix and puts pressure on lung arteries. In the event of certain heart defects, doctors might choose to keep the PDA open until surgery to correct other blood flow defects can be done.
Blood vessels—arteries, veins, and capillaries--are also involved in helping blood flow:
Stenosis can also affect the aortic valve. If this valve cannot open or close properly, blood may leak or pool. This can increase pressure on the heart and cause heart damage. A balloon catheter procedure might be performed in order to widen the valve and increase the blood flow.
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