Atrioventricular Septal Defect, Partial and Intermediate Differential Diagnoses

  • Author: M Silvana Horenstein, MD; Chief Editor: Steven R Neish, MD, SM   more...
 
Updated: Sep 16, 2010
 
 

Differential Diagnoses

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Contributor Information and Disclosures
Author

M Silvana Horenstein, MD  Assistant Professor, Department of Pediatrics, University of Texas Medical School Houston; Medical Doctor Consultant, Legacy Department, Best Doctors, Inc

M Silvana Horenstein, MD is a member of the following medical societies: American Academy of Pediatrics, American College of Cardiology, and American Medical Association

Disclosure: Nothing to disclose.

Coauthor(s)

Michael A Portman, MD  Research Director, Department of Pediatrics, Division of Cardiology, Associate Professor, Childrens' Hospital

Michael A Portman, MD is a member of the following medical societies: American Academy of Pediatrics, American College of Cardiology, American Heart Association, American Physiological Society, and Society for Pediatric Research

Disclosure: Nothing to disclose.

Specialty Editor Board

Paul M Seib, MD  Associate Professor of Pediatrics, University of Arkansas for Medical Sciences; Medical Director, Cardiac Catheterization Laboratory, Co-Medical Director, Cardiovascular Intensive Care Unit, Arkansas Children's Hospital

Paul M Seib, MD is a member of the following medical societies: American Academy of Pediatrics, American College of Cardiology, American Heart Association, Arkansas Medical Society, International Society for Heart and Lung Transplantation, and Society for Cardiac Angiography and Interventions

Disclosure: Nothing to disclose.

Mary L Windle, PharmD  Adjunct Associate Professor, University of Nebraska Medical Center College of Pharmacy; Pharmacy Editor, eMedicine

Disclosure: Nothing to disclose.

Alvin J Chin, MD  Professor of Pediatrics, University of Pennsylvania School of Medicine; Attending Physician, Cardiology Division, Children's Hospital of Philadelphia

Alvin J Chin, MD, is a member of the following medical societies: American Association for the Advancement of Science, American Heart Association, and Society for Developmental Biology

Disclosure: Nothing to disclose.

Gilbert Z Herzberg, MD  Assistant Professor, Department of Pediatrics, Section of Pediatric Cardiology, New York Medical College; Consulting Staff, Department of Pediatrics, Sound Shore Medical Center

Gilbert Z Herzberg, MD is a member of the following medical societies: American Academy of Pediatrics

Disclosure: Nothing to disclose.

Chief Editor

Steven R Neish, MD, SM  Director of Pediatric Cardiology Fellowship Program, Associate Professor, Department of Pediatrics, Baylor College of Medicine

Steven R Neish, MD, SM is a member of the following medical societies: American Academy of Pediatrics, American College of Cardiology, and American Heart Association

Disclosure: Nothing to disclose.

References

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Partial atrioventricular septal defect (AVSD): The mitral and tricuspid annuli are separate. The cleft in the mitral leaflet is in the anterior position. This type of anatomy is usually associated with a primum atrial septal defect (ASD). Partial AVSD is more common than intermediate AVSD.
Intermediate atrioventricular septal defect (AVSD): A single valve annulus is present. The anterior and posterior bridging leaflets are fused (whereas in complete AVSD the anterior and posterior bridging leaflets are not fused). Therefore, the atrioventricular valve has a tricuspid and a mitral component. Intermediate AVSD is the least common type of AVSD.
Echocardiogram of the apical 4-chamber view demonstrating a partial atrioventricular septal defect (AVSD). Chambers are denoted by RA (right atrium), RV (right ventricle), and LV (left ventricle).
Echocardiogram with subcostal view demonstrates an atrioventricular septal defect (AVSD). A portion of the ostium secundum atrial septum is also missing, just superior to the ostium primum defect.
Color Doppler demonstrates left-to-right shunting through the partial atrioventricular septal defect (AVSD) shown in the following images.
Left superior axis deviation in the frontal plane and rR' pattern in right precordial leads.
 
 
 
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