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Start free with EleplanIsolated right ventricular hypoplasia
ORPHA:439Morphological anomaly
What it is
Isolated right ventricular hypoplasia (IRVH) is a rare congenital heart malformation characterized by underdevelopment of the right ventricle associated with patent foramen ovale or interauricular communication and normally developed tricuspid and pulmonary valves. IRVH manifests with severe cyanosis, congestive heart failure, and in severe cases, death in early infancy.
Key facts
- Age of onset
- Infancy, Neonatal
- Inheritance
- Autosomal recessive, Not applicable
- Classified as
- Morphological anomaly
Recorded for the broader condition
- Prevalence
- 1-9 / 100 000 (at birth, Europe)Hypoplastic right heart syndrome
Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.
Signs and symptoms
Common30–79%
8These 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
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
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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