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PubMed2002

Prenatal diagnosis of cardiovascular diseases.

UNLABELLED: Fetal echocardiography is a safe means to obtain reliable anatomical and hemodynamic data of the fetal heart. The procedure is essential for prenatal diagnosis of cardiovascular abnormalities. In addition, fetal echocardiography is useful to follow-up the progression, monitoring during treatment and making a plan of treatment especially in life-threatening cardiac conditions. The objective of this study was to find the distribution of indications for fetal echocardiography, fetal cardiac anomalies detected, outcome of the fetuses and to assess the accuracy of the procedure. A retrospective study was done at Siriraj Hospital, Mahidol University, Bangkok, Thailand. Pregnant women whose fetuses had prenatal echocardiographic data and gave birth from January 1999 to December 2001 were included. The total number of pregnant women was 54 cases. The indications for fetal echocardiography were suspicion of fetal cardiovascular disease by the obstetrician 42.6 per cent, family history of congenital heart diseases 14.8 per cent, multiple organ system anomalies 14.8 per cent, chromosomal anomalies 11.1 per cent, hydrops fetalis 9.3 per cent, maternal systemic diseases 5.6 per cent and previous pregnancy with a dead fetus in utero 1.9 per cent. The gestational age at the time of the first fetal echocardiography ranged from 17 to 39 weeks (median 28 weeks). The number of fetal echocardiography done in each case ranged from 1 to 10 (median 1.4). Prenatal diagnosis of the abnormal cardiovascular system in fetuses was found in 19 cases (35.2%). There were abnormal cardiac anatomies in 42 per cent, cardiac tumors or abnormal masses in 37 per cent and rhythm disturbances in 21 per cent. When compared with postnatal echocardiography and/or autopsy finding, fetal echocardiography had a sensitivity of 100 per cent, specificity of 96.3 per cent and accuracy of 97.8 per cent. CONCLUSION: Fetal echocardiography has good accuracy in the diagnosis of cardiovascular diseases. Obstetrician's suspicion is important in the prenatal diagnosis of heart disease that would have affected the short and long-term outcome of the fetus.

Abortion, Therapeutic↗
PubMed1995

Fetal origins of coronary heart disease.

The fetal origins hypothesis states that fetal undernutrition in middle to late gestation, which leads to disproportionate fetal growth, programmes later coronary heart disease. Animal studies have shown that undernutrition before birth programmes persisting changes in a range of metabolic, physiological, and structural parameters. Studies in humans have shown that men and women whose birth weights were at the lower end of the normal range, who were thin or short at birth, or who were small in relation to placental size have increased rates of coronary heart disease. We are beginning to understand something of the mechanisms underlying these associations. The programming of blood pressure, insulin responses to glucose, cholesterol metabolism, blood coagulation, and hormonal settings are all areas of active research.

Adolescent↗
PubMed1989

Umbilical cord blood rheology in relation to maternal disease and fetal hypoxia.

Erythrocyte aggregation was studied in 60 samples of cord blood taken at delivery from neonates whose mothers suffered from hypertension or diabetes in pregnancy or from neonates who showed hypoxia during labor. Erythrocyte aggregation significantly increased in the cord blood of neonates who suffered from hypoxia during labor, and in neonates from hypertensive and diabetic mothers. The effects of maternal disease or intrapartum hypoxia may therefore stimulate fetal erythropoiesis and cause major changes in cord blood rheology.

Erythrocyte Aggregation↗
PubMed2006

Human fetal growth and organ development: 50 years of discoveries.

Knowledge about human fetal growth and organ development has greatly developed in the last 50 years. Anatomists and physiologists had already described some crucial aspects, for example, the circulation of blood during intrauterine life through the fetal heart, the liver as well as the placenta. However, only in the last century physiologic studies were performed in animal models. In the human fetus, the introduction of ultrasound and Doppler velocimetry has provided data about the growth and development of the fetus and of the circulation through the different fetal districts. Moreover, in the last 2 decades we have learned about fetal oxygenation and fetal nutrient supply caused by the availability of fetal blood samples obtained under relatively steady state conditions. These studies, together with studies using stable isotope methodologies, have clarified some aspects of the supply of the major nutrients for the fetus such as glucose, amino acids, and fatty acids. At the same time, the relevance of placental function has been recognized as a major determinant of fetal diseases leading to intrauterine growth restriction. More recently, the availability of new tools such as 3-dimensional ultrasound and magnetic resonance imaging, have made possible the evaluation of the growth and development of fetal organs. This knowledge in the healthy fetus will improve the ability of clinicians to recognize abnormal phenotypes of the different fetal organs, thus allowing to stage fetal diseases.

Female↗
PubMed1995

Placental insights into neurodevelopmental and other childhood diseases.

Deficient information regarding placental pathology has compromised epidemiological investigations of cerebral palsy, mental retardation, and other diseases. This article reviews light microscopic signs of low placental blood flow, fetal nucleated red blood cells, villitis (villous inflammatory lesions), chorangiosis (placental villous capillary hypervascularity), meconium staining, and chorioamnionitis. These findings can be used with data of birth weight, head circumference, and length to document the duration of fetal disease. The article includes pathophysiological considerations; for example, chorioamnionitis and fetal meconium discharge may cause autacoids to produce fetal hypoperfusion of the fetal brain and other vital organs.

Anthropometry↗