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Temps de relaxation isovolumétrique (TRIV) en ms
Oh, J.K., J.B. Seward, A.J. Tajik. The Echo Manual. 3rd ed., Philadelphia: Lippincott, Williams, and Wilkins,
(2007), p.123-124.
[temps a – temps b]
où :
temps a = ouverture des valvules mitrales
temps b = fermeture des valvules aortiques
Pourcentage de collapsus de la VCI
Lyon, M., N. Verma. "Ultrasound guided volume assessment using inferior vena cava diameter." The Open
Emergency Medicine Journal. 2010, 3: p.22-24.
(VCId exp – VCId insp)/VCId exp
où :
expiration (exp) = diamètre maximum (D max)
inspiration (insp) = diamètre minimum (D min)
Oreillette gauche/Aorte (OG/Ao)
Feigenbaum, H. Echocardiography. Philadelphia: Lea and Febiger, (1994), p.206, Figure 4-49.
Surface auriculaire gauche
Lopez, L. et al. "Recommendations for quantification methods during the performance of a pediatric
echocardiogram: A report from the pediatric measurements writing group of the American Society of
Echocardiography pediatric and congenital heart disease council."Journal of the American Society of
Echocardiograph. 2010, 23: p.465-495.
Volume auriculaire gauche
Lang R. et al. "Recommendations for Cardiac Chamber Quantification: A report from the American Society
of Echocardiography's Guidelinesand Standards Committee and the Chamber Quantification Writing
Group, Developed in Conjunction with the European Association of Echocardiography, a Branch of the
European Society of Cardiology." Journal of the American Society of Echocardiography. (2005), 18:
p.1440-1463.
Lang, R. et al. "Recommendations for Cardiac Chamber quantification by Echocardiography in Adults: An
update from the American Society of Echocardiography and European Association of Cardiovascular
Imaging." Journal of the American Society of Echocardiograph. January (2015), 28: p.1-39.
Vol OG = p/4(h) Σ(D1)(D2)
où :
Vol OG = volume auriculaire gauche en ml
h = hauteur des disques ovales empilés constituant l'OG
D1 = axe mineur orthogonal
D2 = axe majeur orthogonal
Mesures de référence
6-7
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