Explanation/Reference:
Explanation:
(A) Basilar skull fractures are fractures of the base of the skull. Blood behind the eardrum or blood or cerebrospinal fluid (CSF) leaking from the ear are indicative of a dural laceration. Basilar skull fractures are the only type with these symptoms. (B, C, D) These do not typically cause dural lacerations and CSF leakage.

Explanation
(A) This statement describes a normal assessment finding of the lower extremities. (B) This assessment finding reflects problems caused by venous insufficiency. (C) Decreased or absentpedal pulses reflect a problem caused by arterial insufficiency. (D) The leg that is experiencing arterial insufficiency would be cool to touch due to the decreased circulation.

(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).

Explanation
(A) Allowing the client to remain in the position of comfort will not resolve the atelectasis. This position, if left unchanged, over time may actually increase the atelectasis. (B) Analgesics will not resolve the atelectasis and may contribute to it if proper nursing actions are not taken to help resolve the atelectasis. (C) Having the client turn, cough, and deep breathe every 1-2 hours will aid in resolving the atelectasis. Surgery clients are at risk for postoperative respiratory complications because pulmonary function is reduced as a result of anesthesia and surgery. (D) Remaining with the client and keeping him calm and quiet will not affect the client's anxiety, restlessness, or help to resolve the atelectasis. The cause (atelectasis) needs to be treated, not the symptoms (anxiety and restlessness).

Section: Questions Set D
Explanation:
(A) Chloride, HCO3, and sodium will need to be monitored, but monitoring these electrolytes is not as important as potassium monitoring. (B) Chloride, HCO3, and sodium will need to be monitored, but monitoring these electrolytes is not as important as potassium monitoring. (C) Potassium will need to be closely monitored because of its effects on the heart. Hypokalemia could result in supraventricular tachyarrhythmias. (D) Chloride, HCO3, and sodium will need to be monitored, but monitoring these electrolytes is not as important as potassium monitoring.