to determine the incidence of pericardial effusion at the 9th gestational
   age in normal pregnant women, we performed echocardiography in 50
   normal pregnant women at the end of pregnancy and then 6 weeks after
   delivery.

          The results showed that 22% of pregnant women had mild to moderate
   pericardial effusion ,that were resolved completely in all cases 6 weeks
   after delivery.Pericardial effusion was significantly more prevalent in
   primigravids and there was no relationship between maternal age and it’s
   occurance.

          In view of this study, we recommend that in case of larger than
   moderate pericardial effusion or effusions that persist 6 weeks or more after
   delivery, a complete workup for pericardial effusion must be done.