(A) This answer is correct. If the cause is removed, the delirious client will recover completely. (B) This answer is incorrect. The demented client is incapable of returning to previous level of functioning. The delirious client is capable of returning to previous functioning. (C) This answer is incorrect. The demented client, not the delirious client, has progressive intellectual and behavioral deterioration. (D) This answer is incorrect. Delirium develops rapidly, whereas dementia is insidious.

Explanation
(A) 0.5 ng/mL of digoxin is a subtherapeutic level, not a toxic one. (B) 1.0 ng/mL is a therapeutic level. (C)
2.0 ng/mL is a therapeutic level. (D) Digoxin's therapeutic level is 0.8-2.0 ng/mL. Digoxin's toxic level is
>2.0 ng/mL.

Explanation
(A) The airway in children is much smaller than it is in adults. The diameter of the trachea in the newborn is 4 mm and that of the adult is 20 mm. A small change in the diameter of the airway can make a major difference in the pediatric client. (B) The tongue is proportionally larger in children and fills most of the oral cavity, thereby decreasing air space. (C) The entire pediatric airway is elastic. Elasticity diminishes with age, however. (D) The distances between respiratory structures are shorter than that of adults, and therefore organisms are able to move more rapidly down the throat, leading to more extensive respiratory involvement.

(A) Amniotic fluid is generally pale and straw colored. Meconium- stained amniotic fluid would indicate a previous hypoxic episode. This intervention, though appropriate, is not the immediate priority. (B) With rupture of the membranes, the umbilical cord may prolapse if the presenting part does not fill the pelvis. Assessing FHR ascertains fetal well-being. (C) More information regarding fetal status and assessing for membrane rupture is needed prior to contacting the physician. (D) Nitrazine test paper differentiates amniotic fluid from urine. Amniotic fluid is normally alkaline in contrast to urine, which is acidic. This intervention, though appropriate, is not the immediate priority.

Explanation/Reference:
Explanation:
(A) The child's weight supplies the countertraction for Bryant's traction; the buttocks are slightly elevated off the bed, and the hips are flexed at a 90-degree angle. Both legs are suspended by skin traction. (B) The child in Buck's extension traction maintains the legs extended and parallel to the bed. (C) The child in Russell traction maintains hip flexion of the affected leg at the prescribed angle with the leg extended. (D) The child in "90-90" traction maintains both hips and knees at a 90-degree flexion angle and the back is flat on the bed.