(A) Skeletal traction, including the weights that are applying the traction, is never released by the nurse. (B) It is necessary to keep the pin site clean and free from infection. (C) When first placed in traction, the client may experience increased discomfort as a result of the traction pull fatiguing the muscle. (D) When the child in traction is allowed to participate in his care, it gives him a measure of control and helps him to cope with the situation.

Explanation/Reference:
Explanation:
(A) Human chorionic gonadotropin is the biochemical basis for pregnancy tests. It is produced by the placenta to help maintain the corpus luteum. Its levels climb rapidly following conception, peaking at about
8 weeks and then gradually decreasing to low levels after 16 weeks. (B) Estrogen does steadily rise throughout pregnancy, increasing to 30 times that of prepregnancy levels. Although estrogen levels do change during pregnancy, it is not used as the main hormone of evaluation in pregnancy tests. (C) α- Fetoprotein is the major protein in the serum of theembryo. It is initially produced by the yolk sac. (D) Lecithin and sphingomyelin are two phospholipids of which fetal lung surfactant is composed. Levels are evaluated to determine fetal lung maturity.

Section: Questions Set F
Explanation:
(A) Prunes provide fiber to decrease constipation and are an excellent source of dietary iron, as the prenatal client is not taking her supplemental iron and iron-deficiency anemia is common during pregnancy. (B) Green leafy vegetables provide a source of fiber and iron; however, prunes are a better source of both. (C) Red meat is a good iron source but will not address the constipation problem. (D) Eggs are a good iron source but do not address the constipation problem.

(A) Human chorionic gonadotropin is the biochemical basis for pregnancy tests. It is produced by the placenta to help maintain the corpus luteum. Its levels climb rapidly following conception, peaking at about 8 weeks and then gradually decreasing to low levels after 16 weeks. (B) Estrogen does steadily rise throughout pregnancy, increasing to 30 times that of prepregnancy levels. Although estrogen levels do change during pregnancy, it is not used as the main hormone of evaluation in pregnancy tests. (C) -Fetoprotein is the major protein in the serum of theembryo. It is initially produced by the yolk sac. (D) Lecithin and sphingomyelin are two phospholipids of which fetal lung surfactant is composed. Levels are evaluated to determine fetal lung maturity.

Explanation
(A) Limiting activities requiring close vision will not alleviate the discomfort of double vision. (B) Frequent naps may be comforting, but they will not prevent double vision. (C) Artificial tears are necessary in the absence of a corneal reflex, but they have no effect on diplopia. (D) An eye patch over either eye will eliminate the effects of double vision during the time the eye patch is worn. An eye patch is safe for a person with an intact corneal reflex.