Section: Questions Set A
Explanation:
(A) These symptoms are indicative of lithium toxicity. A stat dose of lithium could be fatal. (B) These are toxic effects of lithium therapy. (C) The client is exhibiting symptoms of lithium toxicity, which may be validated by lab studies. (D) There is no known lithium antidote.

Explanation
(A) Any movement of his affected limb will cause discomfort to the child. (B) No weight bearing will be allowed until healing is well underway to avoid pathological fractures. (C) The child will be anorexic and may experience vomiting. Diet should be simple and high caloric until appetite returns and symptoms subside. (D) Physical therapy is instituted only after infection subsides.

Explanation
(A) During impending respiratory failure or asthmatic complications, the client is placed in the high-Fowler position to facilitate comfort and promote optimal gas exchange. (B) Arterial blood gases are monitored in the treatment of respiratory failure during an asthma attack, but it is not an initial intervention. (C) O2 therapy is used during an asthma attack, but it is not the initial intervention. The usual prescribed amount is a cautiously low flow rate of 1-2 L/min. (D) Wheezing is a characteristic clinical finding during an asthma attack. If wheezing suddenlyceases, it usually indicates a complete airway obstruction and requires immediate treatment for respiratory failure or arrest.

Section: Questions Set C
Explanation:
(A) Cold is not a symptom of hyperventilation. This could be due to the temperature of the room. (B) Backache is not a symptom of hyperventilation. This is probably due to the gravid uterus and its effect on the back muscles, or it may be due to the client's position in bed. (C) Dizziness is the first symptom of hyperventilation. It occurs because the body is eliminating too much CO2. (D) Nausea is not a symptom of hyperventilation. It could be a symptom of pain.

Section: Questions Set D
Explanation:
(A) Radiating pain in the urethra in both sexes, extending into the labia in females and into the testicle or penis in the male, indicates a stone in the middle or lower segment of the ureter. (B) Urinary frequency and dysuria are caused by a stone in the terminal segment of the ureter withinthe bladder wall. (C) An obstructing stone in the renal pelvis or upper ureter causes severe flank and abdominal pain with nausea, vomiting, diaphoresis, and pallor. (D) Dull and aching pain may indicate early stages of hydronephrosis. Also, a stone in the renal pelvis or upper ureter causes severe flank and abdominal pain.