Raynaud's is a fairly rare disorder of the blood vessels supplying the skin. During a Raynaud's attack, the blood vessels narrow, limiting blood circulation to affected areas. It makes parts of your body (usually fingers, toes, nose and ears) feel numb and cool in cold temperatures or under stress.
PPROM is associated with 30-40% of preterm deliveries and is the leading identifiable cause of preterm delivery. PPROM complicates 3% of all pregnancies and occurs in approximately 150,000 pregnancies yearly in the United States.
However, about fifty percent of the time, the cause or causes of a premature birth are unknown. When the cause is known, premature birth most frequently comes as a result of a premature rupture of the fetal membranes which initiates labour. Certain events can stimulate the onset of premature labour. These include: placental abruption, where the placenta separates from the uterus during pregnancy.