Three echocardiographic methods in right ventricular function evaluation

Area of Science:

• Cardiology
• Medical Imaging
• Echocardiography

Background:

• Accurate assessment of right ventricular (RV) volumes and function is crucial in cardiovascular diagnostics.
• Traditional methods for RV assessment can be invasive or less precise.
• Two-dimensional echocardiography offers a non-invasive approach, but its accuracy for RV evaluation requires validation.

Purpose of the Study:

• To evaluate the accuracy of different two-dimensional echocardiography methods for assessing right ventricular (RV) volumes and function.
• To compare echocardiographic results with single-plane RV angiography.
• To determine the clinical utility of a validated echocardiographic technique for RV assessment.

Main Methods:

• A series of 44 patients underwent two-dimensional echocardiography and RV angiography within a 7-day interval.
• Three distinct echocardiographic approaches were compared.
• The area-length method utilizing apical 4-chamber and subcostal projections was specifically analyzed.

Main Results:

• The echocardiographic area-length method with two orthogonal planes showed high correlations with RV angiography for end-diastolic volume (r=0.83), end-systolic volume (r=0.82), and stroke volume (r=0.81).
• Satisfactory correlation was observed for ejection fraction (r=0.75).
• This method differentiated RV failure with a sensitivity of 0.68 and specificity of 0.82.

Conclusions:

• The echocardiographic area-length method using two imaging planes is a reliable technique for assessing right ventricular (RV) volumes and function.
• This validated method can be recommended as a screening procedure for detecting RV function changes greater than 12%.
• The findings support the use of echocardiography as a valuable tool in managing RV conditions.