Meconium staining: is it related to maternal smoking?

The present study was undertaken to find if pregnant women's smoking habits were related to the presence of meconium in the amniotic fluid. The medical records of 58 women admitted to the OB service between January 1, 1992, and December 31, 1992, were reviewed. Data from the records was analyzed. Findings indicated that smoking was not related to the presence of meconium in the amniotic fluid. Some women who did not smoke had meconium stained amniotic fluid. Some women who smoked had no meconium staining. A relationship between meconium staining and maternal smoking habits was not supported.