Assessment of myocardial function in neonates using tissue Doppler imaging. Issue 4 (30th October 2010)

• Record Type: Journal Article
• Authors: Negrine, R J S; Chikermane, A; Wright, J G C; Ewer, A K
• Is Part Of: Archives of disease in childhood. Volume 97:Issue 4(2012)
• Page Start: F304
• Page End: F306
• Publication Date: 2010-10-30
• Subjects: Infants -- Diseases -- Periodicals; Newborn infants -- Diseases -- Periodicals; Fetus -- Diseases -- Periodicals; 618.920105
• DOI: 10.1136/adc.2009.175109
• Languages: English
• ISSNs: 1359-2998

Abstract

Abstract : Objective: To measure the left and right ventricular myocardial velocities using tissue Doppler imaging (TDI) in the first 24 h of life in neonates. Design: Left and right ventricular peak systolic (S′), early diastolic (E′) and late diastolic (A′) myocardial velocities were measured using TDI alongside standard echocardiography (including peak diastolic atrioventricular flow, E). E/E′ ratio was calculated for both ventricles. Setting: UK neonatal intensive care unit. Patients: 43 neonates were prospectively recruited into three groups: term (n=16), preterm (30–36 weeks, n=12) and very preterm (<30 weeks, n=15). Results: Myocardial velocities increased with increasing gestation. Right ventricular velocities were significantly greater than left. E/E′ ratio decreased with increasing gestation. Left E/E′ ratio was higher than right in each group. Conclusions: TDI is feasible in preterm neonates and enables the acquisition of myocardial velocities. With increasing gestation, higher myocardial velocities and lower E/E′ ratios were found. The addition of TDI to standard neonatal echocardiography may provide additional information about cardiac function.