Trait

Abnormal second heart sound

Any anomaly of the second heart sound (S2), which is produced by aortic (A2) and pulmonic (P2) valve closure. The A2-P2 interval normally increases with inspiration and narrows with expiration.

HPO HP:0031661

Body system: Abnormality of the cardiovascular system

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0 genes linked to Abnormal second heart sound

The Human Phenotype Ontology links no gene to Abnormal second heart sound itself. The narrower traits below list theirs.

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Narrower traits

Broader traits

Abnormal heart sound

Where this comes from

The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
Data release 2026.10.19-9814e911.

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