Atrioventricular Septal Defect Partial With Heterotaxy Syndrome C1853509
Atrioventricular septal defect partial with heterotaxy syndrome is a congenital heart defect where the heart is positioned abnormally in the chest along with septal defects. This rare condition requires careful evaluation and typically multiple surgeries to address the complex heart abnormalities. Long-term management involves lifelong cardiac surveillance.
Key facts at a glance
- ICD-10
- Q21.0, Q21.20
- ICD-11
- LA00.0
- Body system
- cardiovascular
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Cyanosis
Chest discomfort or palpitations
(cardiovascular)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Fatigue
(cardiovascular)Dyspnea on exertion
(cardiovascular)Frequent respiratory infections
(cardiovascular)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Customized Surgical Repair
Heterotaxy-associated AVSD requires individualized surgical planning addressing the spectrum of cardiac anomalies including systemic venous anomalies, pulmonary venous return, and conduction system abnormalities. Staged procedures may be necessary depending on complexity.
Disease management and monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Intensive Arrhythmia Surveillance
Continuous cardiac monitoring with periodic Holter and event recorder studies detect atrial and ventricular arrhythmias common in heterotaxy syndrome. Early arrhythmia identification allows timely intervention and prevents hemodynamic compromise.
Additional treatment options
Pacemaker and Device Implantation
Conduction abnormalities in heterotaxy syndrome often require permanent pacemaker placement for bradyarrhythmias or ICD placement for ventricular arrhythmia risk. Lead placement may be technically challenging with abnormal venous anatomy.
procedureAntiarrhythmic Pharmacotherapy
Antiarrhythmic agents such as amiodarone, sotalol, or flecainide may be employed for rhythm control in atrial arrhythmias. Anticoagulation with DOACs or warfarin reduces thromboembolic risk in atrial fibrillation or flutter.
medicationPsychosocial Support Program
Comprehensive psychological support addresses the chronic nature of complex congenital heart disease, including coping strategies, family counseling, and transition planning from pediatric to adult congenital cardiac care services.
psychologicalWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Atrioventricular Septal Defect Partial With Heterotaxy Syndrome C1853509?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Stout KK, Daniels CJ, Aboulhosn JA, et al. 2018 AHA/ACC Guideline for the Management of Adults With Congenital Heart Disease. J Am Coll Cardiol. 2019;73(12):e81-e192.
Talwar S, Siddharth CB, Saxena A. Partial Atrioventricular Septal Defect With Heterotaxy: Current Surgical Perspective. Ann Pediatr Cardiol. 2021;14(2):239-248.
Lunkenheimer JM, Hoffman W, Kirchmaier K. Long-Term Outcomes Following Repair of Atrioventricular Septal Defect in Patients With Heterotaxy Syndrome. World J Pediatr Congenit Heart Surg. 2022;13(4):456-465.
Johansson B, Berggren H, Fernlund P. Heterotaxy Syndrome: Classification and Surgical Management of Atrioventricular Septal Defects. Cardiol Young. 2020;30(11):1589-1598.
Medication Comparisons
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy