Mitral insufficiency can be caused by dilation of the left heart, often a consequence of heart failure. In these cases the left ventricle of the heart becomes enlarged and causes displacement of the attached papillary muscles, which control the mitral valve.
Inducing labor can take a few hours or as long as 2 or 3 days. It depends on how your body responds to your treatment. Inducing labor may take longer if youâre pregnant for the first time or if your baby is less than 37 weeks.
Pregnancy lasts for about 280 days or 40 weeks. A preterm or premature baby is delivered before 37 weeks of your pregnancy. 1  Extremely preterm infants are born 23 through 28 weeks. 2  Moderately preterm infants are born between 29 and 33 weeks. 3  Late preterm infants are born between 34 and 37 weeks.