Evaluation of left ventricular dysfunction by Tei index in neonates with hypoxemia.
- Author:
Le WANG
1
;
Ying ZHOU
;
Ming-Xia LI
Author Information
- Publication Type:Journal Article
- MeSH: Echocardiography, Doppler; Female; Humans; Hypoxia; physiopathology; Infant, Newborn; Male; Ventricular Dysfunction, Left; diagnosis; Ventricular Function, Left
- From: Chinese Journal of Contemporary Pediatrics 2011;13(2):111-114
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the role of Tei index in the evaluation of left ventricular dysfunction in neonates with hypoxemia.
METHODSFifty-two neonates with hypoxemia (20 mild, 16 moderate, 16 severe) and 40 normal neonates (control group) were enrolled. On postnatal days 1, 3 and 7, Doppler echocardiography was used to measure the indexes reflecting systolic and diastolic cardiac functions: ejection fraction of left ventricular (LVEF), E/A ratio of mitral value and Tei index of left ventricular (LV-Tei).
RESULTSLVEF and E/A ratio of left ventricular in the moderate hypoxemia group were significantly lower than those in the control group on postnatal days 1 and 3 (P<0.01). LVEF and E/A ratio of left ventricular in the severe hypoxemia group were significantly lower than those in the control group on postnatal days 1, 3 and 7 (P<0.01 or 0.05). Compared with the control group, LV-Tei increased significantly in the mild hypoxemia group on postnatal day 1 and increased significantly in the moderate and severe hypoxemia groups on postnatal days 1 and 3 (P<0.01). There was a negative correlation between PaO2 and LV-Tei in the hypoxemia group on postnatal days 1 and 3 (r=-0.50, P<0.05; r=-0.71, P<0.01 respectively).
CONCLUSIONSLV-Tei can be used as a sensitive indicator for the evaluation of left ventricular dysfunction in neonates with hypoxemia.
