Does air travel affect pregnancy outcome?

Methods: To evaluate if air travel affects pregnancy outcome, all women with singleton, non anomalous fetuses, admitted for delivery at a gestational age >20.0 weeks over a 6-month period were asked if they traveled by airflight during pregnancy, including details of the destination and length of their flights and any complications during the travel. Pregnancy outcome was obtained by chart review.

Lecithin/sphingomyelin ratio and lamellar body count. What values predict the presence of phosphatidylglycerol?

Objective: To assess which values of the lecithin/sphingomyelin (L/S) ratio and lamellar body count (LBC) optimally correspond to the presence of phosphatidylglycerol (PG).

Study Design: A database of clear amniotic fluid specimens obtained by amniocentesis was accessed. Receiver operating characteristic curve analysis was performed for both L/S ratio and LBC to identify the optimal thresholds for predicting the presence of PG.