Right ventricular dilatation

What it means

Enlargement of the chamber of the right ventricle, which can be defined echocardiographically as a right ventricular to left ventricular ratio greater than 1:1.

Ventricular dilatation is to be distinguished from ventricular aneurysm, which refers to a diastolic as well as systolic outpouching of the ventricle containing endocardium, epicardium, and thin-wall non-contractile scarred myocardium, which mainly develop in the setting of a full-thickness infarct, replaced by fibrous tissue because of myocardial infarction.

Rare diseases that can present with this11

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, and Orphanet separately records 1 disease where this sign is specifically absent. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Dilated heart right ventricle