Right Atrial Size Relates to Right Ventricular End-Diastolic Pressure in an Adult Population with Congenital Heart Disease

Authors

  • Doan Hoa Do M.D.,

    1. Echocardiography Laboratory, Division of Cardiology, Sir Mortimer B. Davis-Jewish General Hospital, Montreal, Canada
    2. McGill Adult Unit for Congenital Heart Disease Excellence, McGill University Health Center, Montreal, Canada
    3. Department of Medicine, McGill University, Montreal, Canada
    4. Department of Medicine, Division of Cardiology, Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke University, Sherbrooke, Canada
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  • Judith Therrien M.D.,

    1. Echocardiography Laboratory, Division of Cardiology, Sir Mortimer B. Davis-Jewish General Hospital, Montreal, Canada
    2. McGill Adult Unit for Congenital Heart Disease Excellence, McGill University Health Center, Montreal, Canada
    3. Department of Medicine, McGill University, Montreal, Canada
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  • Ariane Marelli M.D.,

    1. McGill Adult Unit for Congenital Heart Disease Excellence, McGill University Health Center, Montreal, Canada
    2. Department of Medicine, McGill University, Montreal, Canada
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  • Giuseppe Martucci M.D.,

    1. McGill Adult Unit for Congenital Heart Disease Excellence, McGill University Health Center, Montreal, Canada
    2. Department of Medicine, McGill University, Montreal, Canada
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  • Jonathan Afilalo M.D.,

    1. Echocardiography Laboratory, Division of Cardiology, Sir Mortimer B. Davis-Jewish General Hospital, Montreal, Canada
    2. Department of Medicine, McGill University, Montreal, Canada
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  • Igal A. Sebag M.D.

    1. Echocardiography Laboratory, Division of Cardiology, Sir Mortimer B. Davis-Jewish General Hospital, Montreal, Canada
    2. Department of Medicine, McGill University, Montreal, Canada
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  • Funding: This work was supported by: The Heart and Stroke Foundation of Quebec (AM and IAS), The Fonds de Recherche en Santé du Québec (AM), and The Bank of Montreal Center for the Study of Heart Disease in Women (IAS and JT).

  • Conflict of Interest: None declared.

Address for correspondence and reprint requests: Igal A. Sebag, M.D., FRCPC, F.A.C.C., Echocardiography Laboratory, Division of Cardiology, Department of Medicine, Sir Mortimer B. Davis-Jewish General Hospital, McGill University, 3755 Côte Sainte-Catherine Road, Montreal, Quebec, Canada H3T 1E2. Fax: (514) 340-7534; E-mail: igal.sebag@mcgill.ca

Abstract

Aim: Noninvasive markers of right ventricular (RV) diastolic dysfunction are limited by their lack of reproducibility and accuracy. We tested the hypothesis that right atrial (RA) size measured by echocardiography was correlated to invasive parameters of RV diastolic filling. Methods and Results: We studied 31 consecutive adult patients with congenital heart disease. From 2D echocardiography images, we measured maximal RA long-axis and short-axis lengths, area and volume. We compared each of these measures to right ventricular end-diastolic pressure (RVEDP) and mean right atrial pressure (mRAP) measured by right heart catheterization. RA long-axis, short-axis, area, and volume correlated significantly with RVEDP (r = 0.78, P < 0.001; r = 0.61, P < 0.001; r = 0.79, P < 0.001; and r = 0.75, P < 0.001, respectively) and mRAP (r = 0.66, P < 0.001; r = 0.56, P = 0.002; r = 0.70, P < 0.001; r = 0.68, P < 0.001, respectively). Single cut points for each echocardiographic parameter demonstrated reasonable accuracy to rule-in and rule-out RVEDP ≥7 mm Hg (sensitivity = 74%, specificity = 82%, positive LR = 4.1, negative LR = 0.32 for RA long-axis of 49 mm; sensitivity = 89%, specificity = 82%, positive LR = 4.9, negative LR = 0.12 for RA area of 14 cm2; sensitivity = 89%, specificity = 82%, positive LR = 4.9, negative LR = 0.13 for RA volume of 37 mL). Conclusion: RA size measured by echocardiography is strongly correlated to invasive parameters of RV diastolic filling and predicts high RV end-diastolic pressure. (Echocardiography 2011;28:109-116)

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