The symptoms of pericarditis depend on the type, but may include: 1  high temperature. 2  sweating and chills. 3  breathing problems, such as breathlessness. 4  dry cough. 5  abnormal heart rhythms, such as accelerated heartbeat (tachycardia) 6  sharp and stabbing chest pains. 7  pain radiating into the left shoulder and arm.
It is not always possible to determine what causes low levels of amniotic fluid. Oligohydramnios can be caused by a continuous leaking of amniotic fluid. It can also occur when the fetus has kidney failure. After about four months of pregnancy, the kidneys of a normal fetus will produce the amniotic fluid. If the fetus has kidney abnormalities, the amount of amniotic fluid may be too low.
However, amniotic fluid embolisms are rare â and itâs likely that some amniotic fluid commonly enters the maternal bloodstream during delivery without causing problems. Itâs not clear why in some cases this leads to an amniotic fluid embolism. Further research on what causes amniotic fluid embolisms is needed. Due to the rarity of Amniotic fluid embolisms, it is difficult to identify risk factors. Itâs estimated that there are between 1 and 12 cases of amniotic fluid embolism for every 100,000 deliveries.