[Evaluation of ultrasound as a diagnostic test in nuchal encirclement by the umbilical cord during labor].Fred Morgan-Ortiz, C Rodríquez-Ontiveros, H Chang-Bátiz, Marco Antonio Ávila-VergaraGinecologia y obstetricia de Mexico1997A comparison was made of ultrasonographic diagnosis of fetal nuchal encirclement by the umbilical cord versus the gold standard in pregnant, women at labor. 114 pregnant women at labor were studied.… (More)