OBJECTIVE: The purpose of this study was to determine whether there is a relationship between the frequency of meconium-stained amniotic fluid (MSAF) and the duration of labor in term singleton gestation. METHODS: The clinical characteristics of women who delivered term singleton live newborns between 2001 and 2006 were examined. The cases involving neonates with major congenital anomalies were excluded. RESULTS: (1) The frequency of MSAF in term pregnancies was 18.4% (806/4376); (2) MSAF was found in only 2.8% (28/1008) of women who delivered by elective cesarean, but in 23.1% (778/3368) of women who delivered after the onset of labor (p < 0.001); (3) The longer the duration of labor (first stage, second stage, or total), the higher the frequency of MSAF (p < 0.001 for each); this remained significant after adjusting for other confounding variables such as parity, duration of rupture of membranes, gestational age at delivery, and mode of delivery (p < 0.001 for each). CONCLUSION: MSAF was found in only 2.8% (28/1008) of women who delivered before the onset of labor, but in 23.1% (778/3368) of women who delivered after the onset of labor. The longer the duration of labor, the higher the risk of MSAF in term singleton gestation.
OBJECTIVE: The purpose of this study was to determine whether there is a relationship between the frequency of meconium-stained amniotic fluid (MSAF) and the duration of labor in term singleton gestation. METHODS: The clinical characteristics of women who delivered term singleton live newborns between 2001 and 2006 were examined. The cases involving neonates with major congenital anomalies were excluded. RESULTS: (1) The frequency of MSAF in term pregnancies was 18.4% (806/4376); (2) MSAF was found in only 2.8% (28/1008) of women who delivered by elective cesarean, but in 23.1% (778/3368) of women who delivered after the onset of labor (p < 0.001); (3) The longer the duration of labor (first stage, second stage, or total), the higher the frequency of MSAF (p < 0.001 for each); this remained significant after adjusting for other confounding variables such as parity, duration of rupture of membranes, gestational age at delivery, and mode of delivery (p < 0.001 for each). CONCLUSION: MSAF was found in only 2.8% (28/1008) of women who delivered before the onset of labor, but in 23.1% (778/3368) of women who delivered after the onset of labor. The longer the duration of labor, the higher the risk of MSAF in term singleton gestation.
Authors: Bao Yi Liu; Chi Chiu Wang; Tze Kin Lau; Ching Yan Chu; M Phil; Chi Pui Pang; Michael Scott Rogers; Tse Ngong Leung Journal: Am J Obstet Gynecol Date: 2005-01 Impact factor: 8.661
Authors: Nestor E Vain; Edgardo G Szyld; Luis M Prudent; Thomas E Wiswell; Adriana M Aguilar; Norma I Vivas Journal: Lancet Date: 2004 Aug 14-20 Impact factor: 79.321
Authors: Laura Cruciani; Roberto Romero; Edi Vaisbuch; Juan Pedro Kusanovic; Tinnakorn Chaiworapongsa; Shali Mazaki-Tovi; Pooja Mittal; Giovanna Ogge; Francesca Gotsch; Offer Erez; Sun Kwon Kim; Zhong Dong; Percy Pacora; Ronald F Lamont; Lami Yeo; Sonia S Hassan; Gian Carlo Di Renzo Journal: J Perinat Med Date: 2010-03 Impact factor: 1.901