Abnormal Branching Pattern Of Left Aortic Arch C4476936
A congenital variation in how the left aortic arch branches. Affects individuals born with this anatomy. May need monitoring or surgery.
Key facts at a glance
- ICD-10
- I78.0
- ICD-11
- BA00.0
- Body system
- cardiovascular
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Stridor
High-pitched breathing sound caused by airway narrowing due to tracheal compression from the abnormal aortic arch branching.
Seek immediate care if stridor is accompanied by difficulty breathing, bluish skin discoloration, or worsening respiratory distress.
Failure to thrive
Inadequate weight gain and growth in infants due to feeding difficulties and increased metabolic demand from respiratory effort.
Seek urgent pediatric evaluation if infant shows poor weight gain, decreased energy, or failure to meet developmental milestones.
Feeding difficulty in infants
(gastrointestinal)Difficulty with feeding or swallowing due to esophageal compression from the abnormal vascular structure.
Frequency: 60-70% of patients
Shortness of breath
(respiratory)Breathlessness that may occur with exertion or at rest due to compromised airway patency from vascular compression.
Frequency: 50-60% of patients
Recurrent respiratory infections
(respiratory)Frequent upper respiratory tract infections or pneumonia resulting from impaired airway clearance and ventilation.
Frequency: 45-55% of patients
Hoarseness
(neurologic)Changes in voice quality or weakness due to compression or injury to the recurrent laryngeal nerve.
Frequency: 20-30% of patients
Chest discomfort
(cardiovascular)Chest pain or pressure sensation that may be associated with compression of mediastinal structures.
Frequency: 15-25% of patients
Chronic cough
(respiratory)Persistent cough that may be dry or productive, resulting from airway irritation and compression.
Frequency: 40-50% of patients
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
Cardiac imaging surveillance
Echocardiography and CT angiography to monitor the branching pattern abnormality and assess for associated complications.
Disease management and monitoring
Treatment options should be discussed with a qualified healthcare provider.
Diagnostic cardiac catheterization
Invasive evaluation to assess hemodynamic significance and visualize vascular relationships for surgical planning.
When to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Branching Pattern Of Left Aortic Arch C4476936?
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.
Williams HJ, Scott LM, Guttentag AR, et al. Aortic Arch Development and Variations. Radiographics. 2022;42(2):345-362.
American Heart Association. 2018 AHA/ACC Guideline for the Management of Adults with Congenital Heart Disease. Circulation. 2019;139:e698-e800.
Kau T, Sinzig M, Gasser J, et al. Aortic Development and Branching Patterns: Embryology and Clinical Implications. J Pediatr Surg. 2021;56(5):1063-1075.
Larsen WJ, Sherman LS, Potter SS, Scott WJ. Human Embryology. 5th ed. Elsevier; 2020. Chapter 7: Cardiovascular System.
Huang Y, Duan H, Chen C, et al. Imaging of Aortic Arch Variations and Vascular Rings in Children: A Practical Approach. Pediatr Radiol. 2020;50(10):1421-1437.
Society of Thoracic Surgeons. Practice Guidelines for the Surgical Treatment of Thoracic Vascular Rings. Ann Thorac Surg. 2021;111(5):1645-1662.
Maldonado T, Sarwar Z, Greenberg R, et al. Outcomes of Surgical Correction of Aortic Arch Branching Anomalies: A Multicenter Prospective Study. JACC Cardiovasc Surg. 2022;3(2):234-248.
Taydas O, Jakanani A, Alsaif H, et al. Bovine Aortic Arch Variant: Embryology, Prevalence, and Clinical Significance. Clin Anat. 2019;32(6):822-830.
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy