Pharm Lippincott questions with correct answers

A client is receiving 250 mg of a drug that has a half-life of 12 hours. How much drug would remain after 36 hours? - Answer 31 mg Rationale:Half of the drug would be gone in 12 hours, leaving 125 mg. Twelve hours more, or 24 hours total, would leave 62.5 mg. In 36 hours, there would be half of what was available at 24 hours, or 31.25 mg. Twelve hours later, or 48 hours total, there would be 15.625 mg remaining. Chapter 2: Drugs and the Body - Page 25 A client develops bone marrow suppression related to a drug's effects. What would be most important for the nurse to do? - Answer Monitor laboratory blood values. Rationale: Monitoring blood counts would be most important for the client with bone marrow suppression. Protective isolation would be appropriate if the client were immunocompromised. Bone marrow suppression does not pose an immediate threat to cardiovascular status. Frequent mouth care would be appropriate if the client develops stomatitis. Dialysis would be indicated if the client develops renal injury due to drug therapy. Chapter 3: Toxic Effects of Drugs - Page 38 A client is experiencing difficulty swallowing a large oral tablet. What action by the nurse would be most appropriate? - Answer Check to determine whether the drug can be crushed or mixed with food.Not all drugs can be crushed, chewed, or cut. The nurse needs to consult a reputable reference to see if this is possible. Parenteral administration is invasive and should be avoided if there are other options. Some drugs also are not available in parenteral form. Clients with physical problems making swallowing difficult would not be aided by drinking more water. Even healthy clients who have trouble swallowing are often not helped by drinking more water. The nurse cannot change the form of the medication