Final answer:
The statement referring to a risk that DOUBLES during pregnancy and increases substantially during puerperium lacks context, making it difficult to assess as true or false. There are various physiological changes and risk factors associated with pregnancy and the postpartum period, but none provided specifically match the described rate of increase.
Step-by-step explanation:
The statement in question seems to imply that there is a risk during pregnancy and the puerperium that DOUBLES and increases 5.5 times, respectively. However, without specific context, it is not clear what risk is being referred to. Risks during pregnancy and the puerperium period can pertain to numerous health concerns, and each risk factor may have its own rate of increase. For example, blood volume increases by about 30 percent during pregnancy, which is a substantial physiological change but does not double. Therefore, this statement is ambiguous and cannot be deemed true or false without additional context. It is essential to refer to reliable medical sources or studies to obtain accurate information about risk changes during pregnancy. Concerning the provided statements, some addressed issues such as maternal weight gain distribution, respiratory and circulatory system changes, and the risk of having a child with Down syndrome, none specifically confirm a risk that doubles or increases 5.5 times during pregnancy and puerperium.