1. Right Answer: D
Explanation: (A, B, C) Although all of the lab data are abnormal and although these values are decreased in aplastic anemia, the disorder is defined by severe deficits in red cell, white cell, and platelet counts. (D) Aplastic anemia is typically defined in terms of abnormalities of red blood cell count, usually <1 million, white cell count<2,000, and thrombocytes <20,000.
2. Right Answer: C
Explanation: (A) Cantaloupe is a good source of carbohydrates, vitamin C, and vitamin A. (B) Rice contains about 4 g of protein per 200 g. (C) Chicken contains 35 g protein per breast. Chicken is a rich source of vitamin B6 (pyridoxine), which is needed for adequate protein synthesis. As protein intake increases, vitamin B6 intake must also be increased. Vitamin B6 is a coenzyme in amino acid metabolism. (D) Green beans only contain 2 g of protein per cup.
3. Right Answer: D
Explanation: (A) Prednisone is not linked with hematological side effects. (B) Timolol, a -adrenergic blocker is metabolized by the liver. It has not been linked to blood dyscrasia. (C) Gentamicin is ototoxic and nephrotoxic. (D) Phenytoin usage has been linked to blood dyscrasias such as aplastic anemia. The drug most commonly linked to aplastic anemia is chloramphenicol (Chlormycetin).
4. Right Answer: A
Explanation: (A) Muscular hyperactivity and parasthesias may indicate hypocalcemic tetany and require immediate administration of calcium gluconate. Tetany can occur if the parathyroid glands were erroneously excised during surgery. (B) Range of motion exercises are not appropriate topresenting symptoms. (C) These characteristics are not usual signs of potassium imbalance, but of calcium imbalance. (D) Phenytoin is indicated for seizure activity mainly of neurological origin.
5. Right Answer: B
Explanation: (A, C, D) These agents would not cause ulcerations on mouthand lips. (B) Strong alkali or acids will cause burns and ulcerationson the mucous membranes.
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