Arrhythmogenic Right Ventricular Cardiomyopathy: Echo Criteria of the Task Force
Regulatory Basis of Criteria
The diagnosis of arrhythmogenic right ventricular cardiomyopathy/dysplasia utilizes the modified Task Force criteria (Marcus FI, McKenna WJ, Sherrill D, Basso C, Bauce B, Bluemke DA, et al. Diagnosis of arrhythmogenic right ventricular cardiomyopathy/dysplasia: proposed modification of the task force criteria. Circulation 2010;121:1533–1541). These have been further developed into the Padua criteria (Corrado D, Perazzolo Marra M, Zorzi A, et al. Int J Cardiol 2020;319:106–114).
Numerical echocardiographic thresholds (RV outflow tract dimensions, fractional area change, etc.) included in the Task Force criteria structure are not provided in the given excerpts — [to be clarified] from the original source Marcus FI et al., 2010.
Echo Assessment of RV Wall and Function
The anterior wall of the right ventricle is normally thin and concentrically contracts during systole. It is essential to exclude hypertrophy and reduced RV function during examination.
| Parameter | Value | Optimal Section |
|---|---|---|
| RV Wall Thickness (end-diastole) | 1–5 mm (normal) | Sub4C |
Deformation Imaging
Tissue deformation imaging methods allow for the quantitative assessment of abnormal regional RV function in arrhythmogenic dysplasia/cardiomyopathy (Teske AJ, Cox MG, De Boeck BW, et al. J Am Soc Echocardiogr 2009;22:920–927), complementing the structural assessment within the diagnostic search.
Practical Protocol Notes
During step-by-step transthoracic echocardiography (2D mode, M-mode, Doppler studies), it is not recommended to use M-mode for assessing heart chambers. It is advisable to review previous echo reports before the examination to compare dynamics.
Frequently asked questions
Which criteria should be followed when suspecting ARVC?
The modified Task Force criteria (Marcus FI et al., Circulation 2010;121:1533–1541) and their development — the Padua criteria (Corrado D et al., Int J Cardiol 2020;319:106–114).
What are the normal values for RV wall thickness?
The normal thickness of the right ventricular wall at end-diastole is 1–5 mm; the optimal section for measurement is Sub4C.
Are specific echo thresholds of the Task Force criteria provided in the excerpts?
No. Numerical echocardiographic thresholds of the Task Force criteria are absent in the provided excerpts — [to be clarified] from the original source Marcus FI et al., 2010.
Which method helps identify regional RV dysfunction?
Tissue deformation imaging quantitatively assesses abnormal regional RV function in arrhythmogenic dysplasia/cardiomyopathy (Teske AJ et al., 2009).
Is M-mode permissible for chamber assessment in this pathology?
According to the provided recommendations, the use of M-mode for assessing heart chambers is not recommended.