A to Z: Atrial Septal Defect (ASD)enparentshttps://kidshealth.org/EN/images/headers/P-khAZDictionary-enHD-AR1.jpgLearn about congenital heart defects and conditions that affect the heart and circulatory system.Atrial septal defect, ASD, heart, atria, circulatory system, blood, atrial septum, congenital heart defects, ventricles, lungs, aorta, pulmonary artery, heart failure, cardiac surgery, cardiac catheterization, pneumonia08/14/201303/18/201909/02/2019e40ffc59-467a-4ca5-8441-24874f570be7https://kidshealth.org/ws/RadyChildrens/en/parents/az-asd.html/<p><a href="https://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/"><img class="right" title="Parents image" src="https://kidshealth.org/EN/images/buttons/P-atoZDictionary-enBT.jpg" alt="A to Z Dictionary 500 Go" name="5093-P_ATOZDICTIONARY2_ENBT.JPG" /></a></p> <p><strong>May also be called: ASD</strong></p> <p>An atrial septal defect, or <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/asd.html/">ASD</a> &mdash; sometimes referred to as a hole in the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/heart.html/">heart</a> &mdash; is a type of <a class="kh_anchor">congenital heart defect</a> in which there is an abnormal opening in the dividing wall between the upper filling chambers of the heart (the atria).</p> <h3>More to Know</h3> <p>The heart has four chambers: The two lower pumping chambers (the ventricles) and the two upper filling chambers (the atria). <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/blood.html/">Blood</a> that is low in oxygen returns from the body to the right atrium before passing to the right ventricle and then to the lungs to receive oxygen. Oxygen-rich blood returns to the left atrium before passing to the left ventricle, where it is pumped out to the rest of the body.</p> <p>The right and left atria are separated by a thin shared wall called the atrial septum. Kids with an ASD are born with an opening in this wall that allows oxygen-rich and oxygen-poor blood to mix, increasing the total amount of blood that flows toward the lungs. The blood flowing through the hole creates an extra noise, known as a heart murmur, that can be heard when a doctor listens to the heart with a stethoscope.</p> <p>Treatment for an ASD depends on the child's age and the size, location, and severity of the defect. Very small ASDs may close on their own. Larger ASDs usually won't close and must be treated medically. Most of these can be closed in a <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/cardiac-catheter.html/">cardiac catheterization</a> lab, although some will require open-heart surgery. Large ASDs can cause symptoms like poor appetite, poor growth, fatigue, shortness of breath, and lung problems or infections, such as <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/pneumonia.html/">pneumonia</a>.</p> <h3>Keep in Mind</h3> <p>A small ASD will usually close without treatment within the first 2 years of a child's life. If a larger ASD is not treated, health complications can develop later, but most kids with ASDs are diagnosed and treated long before the heart defect causes physical symptoms. Typically, after repair and adequate time for healing, kids with ASDs rarely have further symptoms.</p> <p><em>All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.</em></p>
A to Z: Ventricular Septal Defect (VSD)Learn about congenital heart defects and conditions that affect the heart and circulatory system.https://kidshealth.org/ws/RadyChildrens/en/parents/az-vsd.html/3ad326ef-68da-4f65-9e49-e736a7e3e346
ArrhythmiasArrhythmias are abnormal heartbeats usually caused by an electrical "short circuit" in the heart. Many are minor and not a significant health threat, but others can indicate a more serious problem.https://kidshealth.org/ws/RadyChildrens/en/teens/arrhythmias.html/79184e00-417e-4ce4-a49b-2e89de1b1bd4
Atrial Septal DefectAtrial septal defect, or ASD, is a heart defect that some people are born with. Most ASDs are diagnosed and treated successfully with few or no complications.https://kidshealth.org/ws/RadyChildrens/en/teens/asd.html/109626e5-a3cb-4cba-a44d-947c86de3a81
Atrial Septal Defect (ASD)Atrial septal defect (ASD) — also known as a "hole in the heart" — is a type of congenital heart defect. Most ASDs are diagnosed and treated successfully.https://kidshealth.org/ws/RadyChildrens/en/parents/asd.html/2853e7be-1368-420f-bc8d-134350949604
Congenital Heart DefectsHeart defects happen when there's a problem with a baby's heart development during pregnancy. Most heart defects can be treated during infancy.https://kidshealth.org/ws/RadyChildrens/en/parents/if-heart-defect.html/3dd23fa7-906f-4df9-8638-7400b77bed42
Heart MurmursHeart murmurs are very common, and most are no cause for concern and won't affect a child's health.https://kidshealth.org/ws/RadyChildrens/en/parents/murmurs.html/9e6ab8dd-2a20-40ab-8625-3e956311e737
Heart and Circulatory SystemThe heart and circulatory system (also called the cardiovascular system) make up the network that delivers blood to the body's tissues.https://kidshealth.org/ws/RadyChildrens/en/teens/heart.html/fde8120a-c54e-4e57-94b8-fb4375c29487
Patent Ductus Arteriosus (PDA)The ductus arteriosus is a blood vessel that connects two major arteries before birth and normally closes after a baby is born. If it stays open, the result is a condition called patent ductus arteriosus (PDA).https://kidshealth.org/ws/RadyChildrens/en/parents/patent-ductus-arteriosus.html/1220a363-ed10-4541-94c6-ecb923902cd8
The HeartYour heart beats and sends oxygen throughout your entire body. Find out how it works and how heart problems can be fixed.https://kidshealth.org/ws/RadyChildrens/en/kids/center/heart-center.html/d4cb468c-ba42-454a-94bf-4173f8e15a69
Ventricular Septal DefectVentricular septal defect, or VSD, is a heart condition that a few teens can have. Find out what it is, how it happens, and what doctors do to correct it.https://kidshealth.org/ws/RadyChildrens/en/teens/vsd.html/840c44ec-78bd-4e55-ae74-37dcf68a1407
Ventricular Septal Defect (VSD)Ventricular septal defect (VSD) — also known as a "hole in the heart" — is a congenital heart defect. Most VSDs are diagnosed and treated successfully.https://kidshealth.org/ws/RadyChildrens/en/parents/vsd.html/21135699-6b44-43bd-96b1-618186631849
kh:age-allAgesOrAgeAgnostickh:clinicalDesignation-cardiologykh:genre-dictionarykh:primaryClinicalDesignation-cardiologyCardiology A to Zhttps://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/az-cardio/04be85fa-f4f5-44c2-a321-21821f326c6aAhttps://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/a/891958dd-782d-4b8e-b649-d7c34f646eechttps://kidshealth.org/EN/images/buttons/P-atoZDictionary-enBT.jpg