Kanokpongsakdi, SManassakorn, JThitadilok, WSwasdimongkol, SVantanasiri, C2012-05-222012-05-221985-12Kanokpongsakdi S, Manassakorn J, Thitadilok W, Swasdimongkol S, Vantanasiri C. Amniocentesis guided by ultrasound. Siriraj Medical Journal, 1985 Dec; 37(12): 1035-1041.http://imsear.searo.who.int/handle/123456789/138548Abdominal amniocentesis was performed on 252 pregnant women at Siriraj Hospital during the period from August 1984 to July 1985, 227 cases for fetal lung maturity and 25 cases for genetic study in second trimester. Failure to obtain amniotic fluid encountered in 11 cases (4.36 percent) was directly associated with placental site, fetal position, amount of amniotic fluid and some technical error. Among the complication occurred in 4 cases (1.76 percent).There were premature rupture of membranes, chorioamnionitis, fetal trauma and one case of abortion in second trimester amniocentesis for chromosome study. The results of this study show that failure rate, bloody taped amniotic taped amniotic fluid and major complication can be reduced by using ultrasound guidance.enAmniocentesisUltrasoundArticle