Pulmonary atresia-intact ventricular septum syndrome

What it is

A rare cardiac malformation characterized by congenital either membranous or long segment muscular atresia of the right ventricular outflow tract in the absence of communication at the level of ventricles. The spectrum ranges from simple membranous pulmonary atresia with normal-appearing right ventricle (RV) to hypoplastic RV with abnormal connections between the RV and coronary arteries. Major presenting symptoms are cyanosis and desaturation.

Key facts

Prevalence

1-9 / 100 000 (at birth, United Kingdom)

Age of onset

Antenatal, Infancy, Neonatal

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

These 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