There are six base SI units

A patient has mild stridor immediately after extubation. This finding is most often associated with

A. lower airway obstruction. B. secretions in the large airways. C. upper airway obstruction. D. bronchial spasm.

Pregnant women are advised to take iron supplements, such as prenatal vitamins, because:

A. iron makes the blood clot faster, which protects the mother from excessive bleeding during delivery. B. the blood naturally thins during pregnancy, which predisposes the mother to severe bleeding. C. white blood cells decrease during pregnancy, which increases the mother's risk of an infection. D. pregnancy causes a decreased number of red blood cells, which predisposes the mother to anemia.