Longitudinal motion of the atrioventricular annuli in children: reference values, growth related changes, and effects of right ventricular volume and pressure overload.

Full Abstract

The goals of this study were to characterize normal patterns of longitudinal motion of atrioventricular annuli in the young, establish reference values and assess growth-related changes (n = 40). Sensitivity to changes in right ventricular volume and pressure load was assessed in patients with atrial septal defect (ASD) (n = 25) and with primary pulmonary hypertension (PPH) (n = 20). M-mode of the annuli were obtained from apical views. In healthy subjects, longitudinal %displacement decreased with growth, lateral tricuspid annulus had highest %displacement, velocity of annular descent did not change with growth, tricuspid lateral annulus had the highest velocity of descent, only ascent velocity of the lateral tricuspid annulus decreased with growth, velocities of ascent for the lateral annuli were similar and higher than the septum, and heart rate had no effect on parameters tested. In patients with ASD, the findings were an exaggerated normal pattern. In patients with PPH, %displacement and ascent velocities were blunted. Our results demonstrate the utility of this technique to assess annular dynamics in pediatric patients.

Author information

Author/s: Arce, Orlando X (OX); Knudson, Ole A (OA); Ellison, Misoo C (MC); Baselga, Patricia (P); Ivy, D Dunbar (DD); Degroff, Curt (C); Valdes-Cruz, Lilliam (L);

Affiliation: University of Colorado Health Sciences Center, The Children's Hospital, 1056 E 19th Avenue, Denver, CO 80218, USA.

Grants: M01 RR000069-457038 (Agency:NCRR NIH HHS)

Journal and publication information

Publication Type: Comparative Study; Journal Article

Journal: Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography (J Am Soc Echocardiogr), published in United States. (Language: eng)

Reference: 2002-Sep; vol 15 (issue 9) : pp 906-16

Dates: Created 2002/09/10; Completed 2003/01/21; Revised 2009/06/17;

PMID: 12221407, status: MEDLINE (last retrieval date: 6/18/2009, IMS Date: )

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