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Start free with EleplanUniventricular heart
ORPHA:1464Morphological anomaly
Also called Double inlet atrioventricular connection
What it is
A severe congenital cardiac malformation characterized by both atria related entirely or almost entirely to one functionally single ventricular chamber. The clinical manifestations include congestive heart failure, failure to thrive, cyanosis, hypoxemia and neurodevelopmental disabilities.
Key facts
- Prevalence
- 1-9 / 100 000 (at birth)
- Age of onset
- Infancy, Neonatal
- Inheritance
- Not applicable
- Classified as
- Morphological anomaly
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
6These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
ICD-10 codes
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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