Héctor Muñoz

Learn More
The International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) is a scientific organization that encourages sound clinical practices, teaching, and research for diagnostic imaging in women's health care. The ISUOG Clinical Standards Committee (CSC) has a remit to develop Practice Guidelines and Consensus Statement s as educational(More)
The International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) is a scientific organization that encourages safe clinical practice and high-quality teaching and research related to diagnostic imaging in women’s healthcare. The ISUOG Clinical Standards Committee (CSC) has a remit to develop Practice Guidelines and Consensus Statements that(More)
The traditional paradigm that prostaglandins (PGS) are of central importance in the initiation of labor has been challenged. A group of investigators has recently reported that the amniotic fluid concentrations of PGE(2) and PGF(2 alpha) increase only late in the course of labor implying that "the accumulation of prostaglandins in amniotic fluid is an(More)
In 2006 the International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) published practice guidelines for the sonographic screening of congenital heart disease (CHD) during the second trimester of pregnancy1. This document described two levels for screening low-risk fetuses for heart anomalies. Firstly, a ‘basic’ scan should be performed by(More)
PROBLEM This study was conducted to determine whether: (1) gestational age, parturition, and microbial invasion of the amniotic cavity (MIAC) are associated with changes in amniotic fluid concentrations of immunoreactive macrophage inflammatory protein-1 alpha; (2) amniotic fluid concentrations of macrophage inflammatory protein-1 alpha are correlated with(More)
OBJECTIVE Our purpose was to determine whether an abnormal uterine perfusion pattern was associated with subsequent pregnancy loss after fetal cardiac activity was documented. STUDY DESIGN Pulsatility indexes of both the right and left uterine arteries were obtained by transvaginal color Doppler ultrasonography in 318 consecutive viable pregnancies(More)
Distribution of blood pressure values, prevalence of levels potentially predictive of hypertension in adulthood, and correlations with othe variables were studied in a sample of 2,809 children (1,392 boys and 1,417 girls) 6 to 15 years of age in Caracas, Venezuela. The mean values of systolic and diastolic blood pressures increased steadily with age in both(More)
The role of infection in the pathogenesis of preterm labor and delivery, and the specific mechanisms through which this association is demonstrated are presented. Cellular and biochemical changes that initiate parturition in the setting of infection are discussed, particularly prostaglandins and cytokines.