<unk>  in amniotic fluid<unk>  is normally retained in the infant's bowel until after birth, but sometimes it is expelled into the amniotic fluid (also called "amniotic liquor") prior to birth or during labor and delivery. The stained amniotic fluid (called<unk>  liquor" or<unk> -stained liquor") is recognized by medical staff as a possible sign of fetal distress. Some post-dates pregnancies (when they are more than 40 weeks pregnant) may also have<unk> -stained liquor without fetal distress. Medical staff may aspirate the<unk>  from the nose and mouth of a newborn immediately after delivery in the event the baby shows signs of respiratory distress to decrease the risk of<unk>  aspiration syndrome, which can occur in<unk> -stained amniotic fluid. Most of the time that the amniotic fluid is stained with<unk> , it will be homogeneously distributed throughout the fluid, making it brown. This indicates that the fetus passed the<unk>  some time ago such that sufficient mixing occurred as to establish the homogeneous mixture. Terminal<unk>  occurs when the fetus passes the<unk>  a short enough time before birth/cesarean section that the amniotic fluid remains clear, but individual clumps of<unk>  are in the fluid. Failure to pass<unk>  The failure to pass<unk>  is a symptom of several diseases including Hirschsprung's disease and cystic fibrosis. The<unk>  sometimes becomes thickened and congested in the intestines, a condition known as<unk>  ileus.<unk>  ileus is often the first sign of cystic fibrosis. In cystic fibrosis, the<unk>  can form a bituminous black-green<unk> hanical obstruction in a segment of the ileum. Beyond this, there may be a few separate grey-white globular pellets. Below this level, the bowel is a narrow and empty micro-colon. Above the level of the obstruction, there are several loops of hypertrophied bowel distended with fluid. No<unk>  is passed, and abdominal distension and vomiting appear soon after birth. About 20% of cases of cystic fibrosis present with<unk>  ileus, while approximately 20% of one series of cases of<unk>  ileus did not have cystic fibrosis. The presence of<unk>  ileus is not related to the severity of the cystic fibrosis. The obstruction can be relieved in a number of different ways.<unk>  ileus should be distinguished from<unk>  plug syndrome, in which a tenacious mass of mucus prevents the<unk>  from passing and there is no risk of intestinal perforation.<unk>  ileus has a significant risk of intestinal perforation. In a barium enema,<unk>  plug syndrome shows a normal or dilated colon as compared to micro-colon in<unk>  ileus. Testing<unk>  for drugs<unk>  can be tested for various drugs, to check for in utero exposure. Using<unk> , a Canadian research group showed that by measuring a by-product of alcohol, fatty acid ethyl esters (FAEE) they could objectively detect excessive maternal drinking of alcohol during pregnancy. In the US, the results of<unk>  testing may be used by child protective services and other law enforcement agencies to determine the eligibility of the parents to keep the newborn.<unk>  can also be analyzed to detect the tobacco use of mothers during their pregnancy, which is commonly under-reported.
Meconium
Isavuconazonium
Strychnine
Cromoglicic acid
Triheptanoin
MonoMAC
Acetyl chloride
Diethyl ether