synÂ·theÂ·size (sÄ­nâ²thÄ­-sÄ«zâ²) v. synÂ·theÂ·sized, synÂ·theÂ·sizÂ·ing, synÂ·theÂ·sizÂ·es v.tr. 1. To combine so as to form a new, complex product: His works synthesize photography, painting and linguistic devices (Paul Taylor). 2. To form or produce by chemical synthesis. 3. To produce (sound or music) by means of a synthesizer. v.intr. To form a synthesis.
There are a number of other risk factors for premature labour and delivery. Some of these risks, such as anemia, slow maternal weight gain, stressful work habits, smoking, drinking alcohol, and using drugs like cocaine, can be rectified during pregnancy.
1 Placenta previa is more common early in pregnancy and might resolve as the uterus grows. 2  Placenta previa can cause severe vaginal bleeding before or during delivery. 3  A C-section delivery usually is required if the placenta previa is present at the time of delivery.