Video-assisted thoracoscopic surgery provides good diagnostic and therapeutic results; however, 25% of patients experienced recurrence despite adequate treatment. A strong association exists between thoracic and pelvic endometriosis in catamenial pneumothorax patients.

GDM, per se, is not a major contributor to RDS in late pre-term infants. Rather, the combination of prematurity and cesarean birth act independently to increase the risk of respiratory morbidity.

Being SGA further complicates preterm births after 30 weeks of gestation but not earlier. This might suggest that an extended period in the hostile intrauterine environment, or that being born at <30 weeks, is bad enough and is not further aggravated by being SGA.

Mode of delivery and birth order have a gestational age dependent effect on the incidence of RDS.

Pre-gravid BMI has an important effect on perinatal outcomes in pregnancies following IVF.