Explanation/Reference:
Explanation:
(A) This measurement is _50 cm (48-49 cm). Fifty centimeters is considered the length necessary for the distal end of the tube to be in place in the stomach. This measurement is too short. (B) This measurement is _50 cm (47-48 cm). Fifty centimeters is considered the lengthnecessary for the distal end of the tube to be in place in the stomach. This measurement is too short. (C) This measurement gives an approximate indication of the length necessary for the distal end of the tube to be in place in the stomach, but it is not as accurate as actually measuring the client (nose-earxiphoid). (D) This is the correct measurement of 50 cm from the tip of the client's nose to the tip of the earlobe to the xiphoid process (called the NEX [nose-ear- xiphoid] measurement). It is approximately equal to the distance necessary for the distal end of the tube to be located in the correct position in the stomach.

Explanation
(A) Cathartic drugs promote evacuation of intestinal contents. (B) The client undergoing intestinal surgery is at increased risk for infection from large numbers of anaerobic bacteria that inhabit the intestines.
Administering antibiotics prophylactically can reduce the client's risk for infection. (C) Antibiotics are indicated in the treatment of infections and have no effect on emotions. (D) Antipyretics are useful in the treatment of elevated temperatures. Antibiotics would have an effect on infection, which causes temperature elevation, but would not directly affect such an elevation.

(A) Cathartic drugs promote evacuation of intestinal contents. (B) The client undergoing intestinal surgery is at increased risk for infection from large numbers of anaerobic bacteria that inhabit the intestines. Administering antibiotics prophylactically can reduce the client's risk for infection. (C) Antibiotics are indicated in the treatment of infections and have no effect on emotions. (D) Antipyretics are useful in the treatment of elevated temperatures. Antibiotics would have an effect on infection, which causes temperature elevation, but would not directly affect such an elevation.

(A) Fresh vegetables and fruits are excellent sources of essential vitamins. (B) Canned and frozen foods have a high sodium content. Labels of all canned foods should be read to
determine if sodium is used in any form. (C) Bread, cereal, and rice are excellent sources of carbohydrates. (D) Fish is an excellent source of protein.

Section: Questions Set G
Explanation:
(A) Lorazepam is a benzodiazepine, or antianxiety agent, that potentiates the effects of _-aminobutyric acid in the CNS, which is not the CNS neurotransmitter EPS. (B) Triazolam is a benzodiazepine sedative-hypnotic whose action is mediated in the limbic, thalamic, and hypothalamic levels of the CNS by Y-aminobutyric acid.
(C) Benztropine is an anticholinergic agent, and the drug of choice for blocking CNS synaptic response, which causes EPS. (D) Thiothixene is an antipsychotic and neuroleptic drug that blocks dopamine neurotransmission at the CNS synapses, thereby causing EPS.