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.
In about half of cases, we donât know what causes polyhydramnios. In other cases, we can identify a cause. Some known causes are: 1  Birth defects, especially those that affect the babyâs swallowing. 2  A babyâs swallowing keeps the fluid in the womb at a steady level. 3  Diabetes â Having too much sugar in your blood.olyhydramnios is when you have too much amniotic fluid. Amniotic fluid is the fluid that surrounds your baby in your uterus (womb). Itâs very important for your babyâs development.