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.
The causes of preterm labor and premature birth are numerous, complex, and only partly understood. Medical, psychosocial, and biological factors may all play a role in preterm labor and birth. There are three main situations in which preterm labor and premature birth may occur: Spontaneous preterm labor and birth.
A normal pregnancy lasts about 40 weeks. Occasionally, labor begins prematurely, before the 37th week of pregnancy. This happens because uterine contractions cause the cervix to open earlier than normal. Consequently, the baby is born premature and can be at risk for health problems.Fortunately, research, technology and medicine have helped improve the health of premature babies.ccasionally, labor begins prematurely, before the 37th week of pregnancy. This happens because uterine contractions cause the cervix to open earlier than normal. Consequently, the baby is born premature and can be at risk for health problems.