atrial septal defect, ostium primum type
MONDO:0020437Mondo
Findings
No curated finding names atrial septal defect, ostium primum type yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Atrioventricular septal defect with communication at the atrial level only.
Definition from the Mondo Disease Ontology (MONDO:0020437), read 2026-09-29. CC BY 4.0.
Features
38 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Abnormal P waveHPOHP:0031595
- Frequent (30% to 79% of cases)
- Abnormally loud pulmonic component of the second heart soundHPOHP:0031687
- Frequent (30% to 79% of cases)
- Complete right bundle branch blockHPOHP:0011712
- Frequent (30% to 79% of cases)
- Exertional dyspneaHPOHP:0002875
- Frequent (30% to 79% of cases)
- FatigueHPOHP:0012378
- Frequent (30% to 79% of cases)
- First degree atrioventricular blockHPOHP:0011705
- Frequent (30% to 79% of cases)
- Fixed splitting of the second heart soundHPOHP:0031662
- Frequent (30% to 79% of cases)
- Left ventricular hypertrophyHPOHP:0001712
- Frequent (30% to 79% of cases)
- Mitral regurgitationHPOHP:0001653
- Frequent (30% to 79% of cases)
- PalpitationsHPOHP:0001962
- Frequent (30% to 79% of cases)
- Prolonged PR intervalHPOHP:0012248
- Frequent (30% to 79% of cases)
- Pulmonary artery dilatationHPOHP:0004927
- Frequent (30% to 79% of cases)
Show the remaining 26
- Recurrent respiratory infectionsHPOHP:0002205
- Frequent (30% to 79% of cases)
- Right ventricular dilatationHPOHP:0005133
- Frequent (30% to 79% of cases)
- Systolic heart murmurHPOHP:0031664
- Frequent (30% to 79% of cases)
- Third heart soundHPOHP:0031658
- Frequent (30% to 79% of cases)
- Tricuspid regurgitationHPOHP:0005180
- Frequent (30% to 79% of cases)
- Abnormal respiratory system physiologyHPOHP:0002795
- Occasional (5% to 29% of cases)
Where it sits
- A kind of
Other names
13 names
Resolves to: atrial septal defect, ostium primum type
- Also called
- ASD ostium primum typeASD, ostium primum typeatrial septal defect ostium primumatrioventricular defect with atrial shunting onlyincomplete atrioventricular canal defect with isolated atrial componentincomplete atrioventricular septal defect with isolated atrial componentostium primum ASDpartial atrioventricular canal defect with isolated atrial componentpartial atrioventricular septal defectpartial atrioventricular septal defect: ostium primum typePAVCPAVSDprimum atrial septal defect