Left Ventricular Function

Presentation on echocardiographic assessment of LV function

LV_Session-CHEO-TnECHO.pdf

More on assessment of LV function in the subsections of the Normal echocardiography section (Apical views, Parasternal Long Axis, Parasternal Short Axis).

More information in the section related to inotropic support.

LV dysfunction in neonatal Permanent Junctional Reciprocating Tachycardia

Infant who had episodes of protracted arrhythmias secondary to PJRT with residual LV dysfunction in A5C, A2C and A4C.

LV dysfunction in a term newborn with HIE on therapeutic hypothermia

Parasternal long axis view indicating poor LV contractility.

Parasternal long axis view indicating poor LV contractility and some mitral regurgitation. Infants with perinatal depression often have some degree of myocardial ischemia. Subendocardial ischemia may manifest as papillary muscle ischemia and mitral insufficiency.

One can notice that the colour box, which filters for velocities above 77 cm/s, is not filled despite a colour gain at 40%, potentially indicating low blood flow velocities generated by this LV with dysfunction.

Premature newborn with asphyxia, RDS and hypoxic respiratory failure

Parasternal short axis demonstrating some degree of LV performance anomaly (moderate to severe). The flow through the aortic valve is almost completely filtered at a Nyquist of 68 cm/second, indicating that the systolic dysfunction impairs flow velocity generation in the outflow tract (possibly with secondary decreased output).

Significantly altered contractility of the LV

Parasternal short axis view.

Other structural causes of cardiac dysfunction were rule out: coronaries were evaluated with 2D and Colour (not presented) and were normal. Aortic arch did not show any signs of obstruction. LVOT was unobstructeded.

Sweep in parasternal short axis indicates that the apex seems to be more affected than the papillary area and base.

Degree of biventricular dysfunction with a depressed TAPSE.

Isosystemic pulmonary pressures by TR jet velocity (55 RV-RA gradient). The PFO was bidirectional.

LV dysfunction in A2C

Unobstructed LV outflow tract. This patient also has some mild MR and TR, indicating some suffering of the underlying ventricle during the asphyxiated event (papillary muscle subendocardial ischemia)

Bidirectional PDA from isosystemic pulmonary pressure (PVR) and possibly decreased LV output from LV dysfunction.

Altered TDI profile, with S' depressed for both ventricles.

LV dysfunction in the context of Congenital Diaphragmatic Hernia

Mild to moderate mitral regurgitation in the apical 4 chamber view

Some degree of LV dysfunction in A4C

Moderate dysfunction in the A2C

Depressed Ejection fraction by Speckle Tracking echocardiography

Abnormal strain (deformation) using speckle tracking echocardiography for the LV.

Created by Gabriel Altit - Neonatologist / Créé par Gabriel Altit (néonatalogiste) - © NeoCardioLab - 2020-2022 - Contact us / Contactez-nous