Explanation/Reference:
Explanation:
(A) There is no need to phone the physician because the lithium level is within therapeutic range and because there are no indications of toxicity present. (B) There is no reason to withhold the lithium because the blood level is within therapeutic range. Also, it is necessary to give the medication as scheduled to maintain adequate blood levels. (C) The lab results indicate that the client's lithium level is within therapeutic range (0.2-1.4 mEq/L), so the medication should be given as ordered. (D) Benztropine is an antiparkinsonism drug frequently given to counteractextrapyramidal symptoms associated with the administration of antipsychotic drugs (not lithium).

(A) The instillation of erythromycin ophthalmic preparation, not phototherapy, prevents ophthalmia neonatorum. (B) The administration of vitamin K (AquaMEPHYTON) assists the infant's clotting mechanism. (C) Excessive bilirubin accumulates when the infant's liver cannothandle the increased load caused by the breakdown of red blood cells postnatally. This excessive bilirubin seeps out of the blood and into the tissues, staining them yellow. Phototherapy accelerates the removal of bilirubin from the skin by breaking it down into substances that can be excreted in stool or urine. (D) Phototherapy decreases levels of unconjugated bilirubin, thereby preventing kernicterus.

Explanation/Reference:
Explanation:
(A) Chadwick's sign is a presumptive sign of pregnancy. The coloration may not subside from past pregnancy or could be caused by other situations that create vasocongestion. (B) FHR (movement) observed on ultrasound is a positive diagnosis of pregnancy. (C) Enlargement of the uterus may be due to fibroids or infection. It is considered a probable sign. (D) Breast tenderness and enlargement is a presumptive sign because it may be due to other conditions, such as premenstrual changes.

Section: Questions Set E
Explanation:
(A) At least eight glasses of fluid per day are encouraged to help dilute stomach contents, thereby decreasing irritation. (B) Alka Seltzer contains aspirin, which is irritating to gastric mucosa, and therefore should be avoided. (C) Small, frequent bland meals help to decrease gastric pressure and to prevent reflux. (D) Lying down after meals may cause gastric reflux and prevents optimal gastric emptying.

Explanation
(A) Diazepam is an antianxiety medication and is not designed to reduce psychotic symptoms. (B) Haloperidol is an antipsychotic medication and may be used until the lithium takes effect. (C) Sertraline is an antidepressant and is used primarily to reduce symptoms of depression. (D) Alprazolam is an antianxiety medication and is not designed to reduce psychotic symptoms.