(A) Diluted fruit juices are not recommended for rehydration because they tend to aggravate the diarrhea. (B) Diluted soft drinks have a high-carbohydrate content, which aggravates the diarrhea. (C) Soy-based, lactose-free formula reduces stool output and duration of diarrhea in most infants. (D) Regular formulas contain lactose, which can increase diarrhea.

Explanation/Reference:
Explanation:
(A) Hypokalemia can cause digoxin toxicity. Administration of KCl would prevent this. (B) Thyroid agents decrease digoxin levels. (C) Quinidine increases digoxin levels dramatically. (D) Theophylline is not noted to have an effect on digoxin levels.

(A) Phenothiazines cause extrapyramidal symptoms. (B) No amount of medication can relieve all anxiety in all cases. (C) The purpose of amitriptyline is to relieve the symptoms of depression because it is an antidepressant. It increases the action of norepinephrine and serotonin on nerve cells. (D) Periodic blood tests are done when lithium is prescribed.

(A) Analgesic medication does not counteract the effects of antibiotics. (B) Analgesic medication may lower blood pressure elevated due to anxiety. (C) Analgesic medication, especially CNS depressants, is not given if there is danger of increasing ICP, because neurological changes may not be apparent. Also, further depression of the CNS is contraindicated. (D) Analgesics do not stimulate the CNS.

Explanation
(A) With the slight and mild hard of hearing, auditory training is beneficial. (B) Speech is the most difficult task because it is learned by visual and auditory stimulation, imitation, and reinforcement. (C, D) Lip reading and signing are aimed at establishing communicative skills, but they are learned more easily by visual stimulation.