NCLEX FUNDAMENTALS II BRAINBOOSTER

A health care provider's prescription reads potassium chloride 20 mEq in 1000 mL normal saline and infuse at 100 mL/hr. The nurse assisting in caring for the client determines that the client will receive how many milliequivalents (mEq) of potassium every hour? Fill in the blank. Rationale: Use the ratio and proportion formula to solve this problem, and then solve for x. 20 mEq: 1000 mL :: x mg: 100 mL Multiply means and extremes then divide to solve for x. 1000x = 2000x = 2 mEq Penicillin V 250 mg orally every 8 hours, is prescribed for a child with a respiratory infection. The child's weight is 45 pounds. The safe pediatric dosage is 25 to 50 mg/kg/day. Which statement accurately describes the prescribed dosage for this child? Rationale: Convert pounds to kilograms by dividing by 2.2 and then determine the dosage frequency.Pounds to kilograms:45 lb ÷ 2.2 lb/kg = 20.45 kgDosage parameters:25 mg/kg/day × 20.45 kg = 511.25 mg/day50 mg/kg/day × 20.45 kg = 1022.5 mg/dayDosage frequency:250 mg × 3 doses (every 8 hours) = 750 mg/dayThe dosage is within the safe dosage range. The nurse is assigned to care for an Asian-American client. The nurse develops a plan of care based on which belief? Rationale: Asian Americans believe that illness is caused by an imbalance between yin and yang, by prolonged sitting or lying, or by overexertion. In the African-American culture, illness is viewed as a disharmonious state that may be caused by demons and spirits. Native Americans believe that illness is caused by supernatural forces. An anxious client is experiencing respiratory alkalosis from hyperventilation as a result of anxiety. The nurse should do which action to help the client experiencing this acid-base disorder? Rationale: An anxious client benefits from emotional support and reassurance, which in turn reduces anxiety and may lower the respiratory rate. The client may benefit from the administration of a sedative or antianxiety medication, if it is prescribed. The client should try to breathe more slowly and shallowly. Lying supine provides no benefit to the client. The nurse is assisting in the care of a client receiving codeine sulfate for pain. The nurse should make note of which finding to detect an adverse effect of this medication? Rationale: The client taking codeine sulfate is at risk for constipation. Thus, the nurse monitors the frequency of bowel movements. The nurse also would monitor the client for hypotension, decreased respirations, and urinary retention. The nurse would plan measures to counteract these expected effects such as encouraging fluids, coughing and deep breathing, and increasing mobility to the extent tolerated by the client.