A patient's pregnancy failed because the fertilized ovum did not implant in the uterus. Which explanation should the nurse provide? {Ans: "Your body was not creating enough progesterone." Progesterone is often called the "hormone of pregnancy" because it inhibits uterine contractions and relaxes smooth muscle, allowing a pregnancy to be maintained. A lack of estrogen, follicle-stimulating hormone, or luteinizing hormone would not affect the ability of the uterus to prepare for implantation of the fertilized ovum.}A pregnant patient is angry because her spouse does not seem to care about the pregnancy. Which statement should the nurse make? {Ans: "This is a normal feeling to experience in the second trimester."}A pregnant patient reports lying supine in bed at night. For which health problem should the nurse assess the patient? {Ans: Vena caval syndrome}The nurse teaches a pregnant client about fetal gas exchange. Which information should the nurse​ include? A: Gas exchange occurs in the lungs of the fetus. B. Oxygen and carbon dioxide gas exchange occurs through the placenta. C. Oxygen is exchanged through the​ placenta, whereas other gases are exchanged in the lungs. D. Oxygen is vital for the fetus and is exchanged through amniotic fluid.