Comparison of digital with conventional ventriculography for quantitative right ventricular studies

Area of Science:

• Cardiology
• Pediatric Cardiology
• Medical Imaging

Background:

• Conventional angiocardiography is a standard diagnostic tool for congenital heart defects.
• Assessing right ventricular size and function is crucial for managing pediatric cardiac conditions.
• Minimizing contrast medium and reducing procedural complications are key goals in pediatric cardiac catheterization.

Purpose of the Study:

• To evaluate the feasibility and accuracy of quantitative central venous digital angiocardiography for assessing right ventricular parameters.
• To compare measurements of right ventricular spatial orientation, size, and shape obtained via digital angiocardiography with those from conventional methods.

Main Methods:

• Quantitative central venous digital angiocardiography was performed in 21 children with congenital heart defects during routine cardiac catheterization.
• Measurements of end-diastolic volume, end-systolic volume, and ejection fraction were compared between digital and conventional angiocardiography.
• Incidence of premature ventricular contractions and the amount of contrast medium used were also compared.

Main Results:

• Excellent correlations were observed for end-diastolic (r=0.986) and end-systolic volumes (r=0.969) between the two methods.
• Ejection fractions showed similarly close correlations.
• Premature ventricular contractions were absent with digital angiocardiography, unlike conventional methods, and contrast medium usage was reduced by 36%.

Conclusions:

• Central venous digital angiocardiography is a feasible and accurate method for assessing right ventricular size and function in children.
• This technique offers advantages over conventional angiocardiography, including reduced contrast administration and fewer arrhythmias.
• Digital angiocardiography represents a valuable advancement in the diagnostic imaging of pediatric congenital heart disease.