Carbon dioxide is a pure substance. A pure substance can be an element or a compound. Carbon dioxide is a pure compound, consisting of two kinds of atoms that are bonded together. An element consists of merely one kind of atom. For example, oxygen is an element.
For Downâs syndrome, a blood test called the quadruple test is available from weeks 14-20 of pregnancy. For Patauâs and Edwardsâ syndromes, you will be offered a mid-pregnancy scan that checks for physical abnormalities.
During pregnancy changes occur in your immune system, heart, and lungs. Additional stress is put on the heart and lungs as the lung capacity decreases and heart rate increases during pregnancy. During this time the immune system is also naturally suppressed making you more susceptible to the flu during pregnancy.Getting the flu while pregnant can lead to pneumonia and even hospitalization, so it is important to do what you can to prevent getting the flu during pregnancy. It also places your baby at risk.uring this time the immune system is also naturally suppressed making you more susceptible to the flu during pregnancy. Getting the flu while pregnant can lead to pneumonia and even hospitalization, so it is important to do what you can to prevent getting the flu during pregnancy. It also places your baby at risk.