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Echocardiographic measurement of the normal adult right ventricle
Insights
This study establishes reproducible echocardiographic measurements for the right ventricle, providing normal values for cavity size and free wall thickness. These findings aid in future right ventricular imaging studies.
Area of Science:
- Cardiology
- Medical Imaging
- Echocardiography
Background:
- The complex shape of the right ventricle presents challenges for accurate imaging.
- Standard echocardiographic protocols are essential for consistent cardiac assessments.
Purpose of the Study:
- To establish a reproducible method for echocardiographic assessment of the right ventricle.
- To define normal ranges for right ventricular dimensions and free wall thickness.
Main Methods:
- Utilized an established echocardiographic protocol with multiple tomographic imaging planes.
- Performed diastolic measurements of the right ventricular inflow tract, outflow tract, and body.
- Assessed cavity size and free wall thickness in 41 healthy subjects.
Main Results:
- Measurements of right ventricular cavity size were highly reproducible.
- Echocardiographic views accurately depicted the right ventricular shape.
- Normal values for anterior regions were nearly double previously reported limits.
Conclusions:
- Developed a reliable echocardiographic method for right ventricle evaluation.
- Established normal reference data for right ventricular dimensions.
- This provides a foundation for future clinical research on the right ventricle.
Abstract:
In studies of the right ventricle the complexities of chamber shape may be overcome by use of multiple tomographic imaging planes. An established protocol for the echocardiographic description of the heart was used to examine the right ventricle in an ordered series of transducer locations and orientations. Diastolic measurements were made of the right ventricular inflow tract, outflow tract, and right ventricular body, and the range and reproducibility of normal values for cavity size and right ventricular free wall thickness were established. These measurements of cavity size in 41 normal subjects were highly reproducible and the views that were used correctly described the truncated and ellipsoidal shape of the right ventricular inflow tract and body with a separately aligned outflow tract. Cavity trabeculation prevented measurement of the free wall thickness in some areas; however, values of nearly twice the previously reported upper limit of normal for anterior regions were measured from the apex or lateral right ventricular wall. These normal data provide a basis for future echocardiographic studies of the right ventricle.