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Heart 2001;86:31-38; doi:10.1136/heart.86.1.31
Copyright © 2001 BMJ Publishing Group Ltd & British Cardiovascular Society
Heart 2001;86:31-38 ( July )

Cardiovascular medicine

Echocardiographic assessment of arrhythmogenic right ventricular cardiomyopathy L Lindströma, U M Wilkenshoffa, H Larssonb, B Wrannea

a Department of Clinical Physiology, Linköping Heart Centre, Faculty of Health Sciences, Linköping University, S-581 85 Linköping, Sweden, b Department of Cardiology, Linköping Heart Centre

Correspondence to: Dr Lindström lena.lindstrom{at}lio.se

Accepted 28 February 2001

OBJECTIVE---To evaluate new echocardiographic modes in the diagnosis of arrhythmogenic right ventricular cardiomyopathy (ARVC).
DESIGN---Prospective observational study.
SETTING---University Hospital.
SUBJECTS---15 patients with ARVC and a control group of 25 healthy subjects.
METHODS---Transthoracic echocardiography included cross sectional measurements of the right ventricular outflow tract, right ventricular inflow tract, and right ventricular body. Wall motion was analysed subjectively. M mode and pulsed tissue Doppler techniques were used for quantitative measurement of tricuspid annular motion at the lateral, septal, posterior, and anterior positions. Doppler assessment of tricuspid flow and systemic venous flow was also performed.
RESULTS---Assessed by M mode, the total amplitude of the tricuspid annular motion was significantly decreased in the lateral, septal, and posterior positions in the patients compared with the controls. The tissue Doppler velocity pattern showed decreased early diastolic peak annular (EA) velocity and an accompanying decrease in early (EA) to late diastolic (AA) velocity ratio in all positions; the systolic annular velocity was significantly decreased only in the lateral position. Four patients had normal right ventricular dimensions and three were judged to have normal right ventricular wall motion. The patient group had also a significantly decreased tricuspid flow E:A ratio.
CONCLUSIONS---Tricuspid annular measurements are valuable, easy to obtain, and allow quantitative assessment of right ventricular function. ARVC patients showed an abnormal velocity pattern that may be an early but non-specific sign of the disease. Normal right ventricular dimensions do not exclude ARVC, and subjective detection of early changes in wall motion may be difficult.


Keywords: annular motion; diastolic dysfunction; right ventricular function; tissue Doppler

© 2001 by Heart
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