A to Z: Atrioventricular Septal Defectenparentshttps://kidshealth.org/EN/images/headers/P-khAZDictionary-enHD-AR1.jpgLearn about congenital heart defects and conditions that affect newborn babies.Endocardial cushion defect, ECD, atrioventricular canal defect, atrioventricular septal defect, AVSD, septum, mitral valve, tricuspid valve, atria, ventricles, heart, circulatory system, congenital heart defects, heart valves, cyanosis, heart failure, Down syndrome12/04/201303/18/201903/18/20196af33103-385c-45a5-b056-5644714e6832https://kidshealth.org/ws/RadyChildrens/en/parents/az-atrioventricular.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: Endocardial Cushion Defect; ECD; Atrioventricular Canal Defect</strong></p> <p>An atrioventricular septal defect is an abnormal heart condition caused by a poorly formed central area of the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/heart.html/">heart</a>. Atrioventricular septal defects are <a class="kh_anchor">congenital</a>, meaning they are present at birth.</p> <h3>More to Know</h3> <p>The heart consists of four chambers &mdash; the left atrium and left ventricle, and the right atrium and right ventricle. The chambers are separated by a wall of tissue called the septum. Two valves &mdash; the mitral and tricuspid valves &mdash; separate the atria (plural of atrium) from the ventricles.</p> <p>With atrioventricular septal defects, the tissues that form the septum don't grow completely while a baby is in the womb, leaving one or more holes between the atria or the ventricles. In some cases, instead of two separate valves, there is only one large common valve, which may be malformed (formed incorrectly).</p> <p>The causes of atrioventricular septal defects aren't fully understood, but they're commonly seen in children with <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/down-syndrome.html/">Down syndrome</a>. The defects can make the heart have to work harder to pump blood and cause symptoms like difficulty feeding, failure to gain weight, lung congestion, and a bluish tint to the skin (called cyanosis).</p> <p>Atrioventricular septal defects are usually corrected through surgery while a child is still an infant.</p> <h3>Keep in Mind</h3> <p>If left untreated, an atrioventricular septal defect can cause complications (including heart failure) and may be life threatening. Once surgery has been done to correct the defect, however, most kids lead a normal life.</p> <p><em>All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.</em></p>
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 and Circulatory SystemThe heart and circulatory system are our body's lifeline, delivering blood to the body's tissues. Brush up on your ticker with this body basics article.https://kidshealth.org/ws/RadyChildrens/en/parents/heart.html/52398b6a-54a6-4272-a569-42ed5b12aeac
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
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