Even though theyâre both latex, there are significant differences between our Talalay Latex and Dunlop Latex (Latex Light). Theyâre manufactured using different processes; it takes 14 hours to make a Talalay Latex mattress core, but less than one hour to make a Dunlop mattress core.
A retained placenta occurs when all or part of the placenta remains inside the uterus after child birth. Normally the placenta is delivered within minutes to an hour after child birth. For some women, the placenta doe not deliver naturally and must be physically removed.
1 Use of street drugs such as cocaine also may lead to placenta previa.  Uterine scarring: Placenta previa is more likely to occur if you have scarring in your uterus. Scarring may occur from a past surgery or pregnancy. Scarring may increase the risk that your placenta will grow in the lower part of your uterus.