Some twins share a single placenta. Other twins have dual placentas. Why does it matter? Your medical care may differ depending on the situation.<p>As the <a href="https://www.verywell.com/increase-in-twins-2447118" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="1">birth rate for twins</a> rises, twins have become more commonplace and medical caregivers have become more experienced in handling twin pregancies and deliveries. However, because a twin pregnancy is inherently more high risk than a singleton pregnancy, some cases may require more specialized care. Your doctor will help you determine whether your situation requires the expertise of a specialist.</p>Typically, twins are born earlier than singletons. In 2006, for example, the National Vital Statistics Report reported that sixty percent of twins were born preterm before thirty-seven weeks gestation. Some doctors prefer to deliver twins and multiples before the pregnancy progresses past thirty-nine or forty weeks while others opt to let the pregnancy follow its course. It&#39;s important to discuss this issue with your doctor and determine her philosophy about late-term twin pregnancy.More frequent monitoring, more frequent office visits, amnio, etc.