72. A Nurse on duty told a female patient with pernicious anemia to take vitamin B12 injections for the rest of her life.The patient asks the nurse why she has to take vitamin B-12 injections for the rest of her life. Which answer given by a nurse is correct for the patient question? A. "The reason for your vitamin deficiency is an excessive excretion of th vitamin because of kidney dysfunction." B. "The reason for your vitamin deficiency is an inability to absorb the vitamin because the stomach is not producing sufficient acid." C. "The reason for your vitamin deficiency is an inability to absorb the vitamin because the stomach is not producing sufficient intrinsic factor." D. "The reason for your vitamin deficiency is an increased requirement for the vitamin because of rapid red blood cell production." 73. What advice should a mother of a hemophiliac child follow to prevent bleeding episodes A. "Your son should stay away from contact sports," B. "Your son must avoid any meals that can irritate him." C. "Your boy must never shave." D. "Your son should always live near a hospital." 74. During a cardiac examination , the nurse can best hear the S1 heart sound by placing the Stethoscope at the client's __ A. Base of the heart. B. Pulmonic valve area. C. Apex of the heart. D. Second left interspace. 75. An adult client tells the nurse that his father died of a massive coronary attack at the age of 65. The nurse should explain to the client that one of the risk factors for coronary heart disease is A. High serum level of low -density lipoproteins. B . Low-carbohydrate diets. C. High serum level of high -density lipoproteins. D. Diets that are high in antioxidan vitamins. 76. Packed red blood cells are being given to a patient. The client has itching shortly after the infusion begins and breaks out in hives on his chest and abdomen . Which of the following actions should the nurse take first? A. Slow the rate of the transfusion B. Call the physician for an order for an antihistamine. C. Mix IV fluid with the blood to dilute it D. Stop the transfusion 77. An arterial blood gas is ordered for a man after a myocardial infarction After obtaining the specimen, it would be MOST appropriate for the nurse to take which of the following actions? A. Obtain ice for the specimen. B direct pressure to the site. C. Apply a sterile dressing to the site. D. Observe the site for hematoma formation.