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.
Often, the specific cause of premature birth isn't clear. Many factors may increase the risk of premature birth, however, including: 1  Having a previous premature birth. 2  Pregnancy with twins, triplets or other multiples. 3  An interval of less than six months between pregnancies. 4  Conceiving through in vitro fertilization.