A Jurko1. 1. Department for Children and Adolescents, Jessenius Faculty of Medicine, Comenius University and University Hospital, Martin, Slovakia. jurko@enelux.sk
Abstract
BACKGROUND: During intrauterine life is the volume stimulation of the left ventricle low and it's cardiac output in comparison to the right ventricle is about 50%. Before and also after birth the right ventricle is dominant. Postnatally low-resistance placenta is excluded from the systemic circuit, leading to an abrupt pressure elevation and to its further increase. AIM OF STUDY: The authors performed echocardiographic evaluation of healthy children from newborn age to 6 month of age. METHODS: Fifty randomly selected healthy mature infants were included in this study. Echocardiographic examination was performed at the age of 5 days, 1 month and 6 months respectively. Data obtained at the age of 5 days were compared to those at 1 month and 6 months. RESULTS: The authors confirmed a significant increase in the left ventricular volumes (LVESV, LVEDV, SV) developed early newborn in the period to 6 months of age. There was a significant increase in EF in the period age of 5 days to 1 month of age. Mean LVM on the 5th day after birth was 8.13+/-1.50 g. It increased to 11.39+/-2.33 g after 1 month and to 16.61+/-2.75 g after 6 months. They confirmed significant LVMVI decrease to 1.38+/-0.25 g/ml (6 months) from 1.56+/-0.33 (1 month). The authors found significant decrease in RWT values at the age of 6 months compared with the 5th day. CONCLUSION: Left ventricular parameters confirm postnatal left ventricle growth in healthy infants. The results are useful in interpretation of echocardiographic examinations in newborns and infants.
BACKGROUND: During intrauterine life is the volume stimulation of the left ventricle low and it's cardiac output in comparison to the right ventricle is about 50%. Before and also after birth the right ventricle is dominant. Postnatally low-resistance placenta is excluded from the systemic circuit, leading to an abrupt pressure elevation and to its further increase. AIM OF STUDY: The authors performed echocardiographic evaluation of healthy children from newborn age to 6 month of age. METHODS: Fifty randomly selected healthy mature infants were included in this study. Echocardiographic examination was performed at the age of 5 days, 1 month and 6 months respectively. Data obtained at the age of 5 days were compared to those at 1 month and 6 months. RESULTS: The authors confirmed a significant increase in the left ventricular volumes (LVESV, LVEDV, SV) developed early newborn in the period to 6 months of age. There was a significant increase in EF in the period age of 5 days to 1 month of age. Mean LVM on the 5th day after birth was 8.13+/-1.50 g. It increased to 11.39+/-2.33 g after 1 month and to 16.61+/-2.75 g after 6 months. They confirmed significant LVMVI decrease to 1.38+/-0.25 g/ml (6 months) from 1.56+/-0.33 (1 month). The authors found significant decrease in RWT values at the age of 6 months compared with the 5th day. CONCLUSION: Left ventricular parameters confirm postnatal left ventricle growth in healthy infants. The results are useful in interpretation of echocardiographic examinations in newborns and infants.
Authors: Swati Choudhry; Amber Salter; Tyler W Cunningham; Philip T Levy; Hoang H Nguyen; Michael Wallendorf; Gautam K Singh; Mark C Johnson Journal: J Am Soc Echocardiogr Date: 2017-06-07 Impact factor: 5.251
Authors: Indroneal Banerjee; Jianlin Zhang; Thomas Moore-Morris; Emily Pfeiffer; Kyle S Buchholz; Ao Liu; Kunfu Ouyang; Matthew J Stroud; Larry Gerace; Sylvia M Evans; Andrew McCulloch; Ju Chen Journal: PLoS Genet Date: 2014-02-20 Impact factor: 5.917