Rare diseases · Sign or symptom
Abnormal electrophysiology of sinoatrial node origin
HP:0011702
What it means
An abnormality of the sinoatrial (SA) node in the right atrium. THe SA node acts as the pacemaker of the heart.
Rare diseases that can present with this2
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.