Age of a patient must be considered in dosing medications in addition to weight and potential contraindications. Fentanyl is a sedation drug that utilizes first-order kinetics. Half-life for a young person is 250 minutes; half-life for an old person (age>70) is 925 minutes. a. For each type of patient (young/old), what is the rate constant? Ans: 0.0028;0.00075 b. For each patient, how long would it take to reduce the concentration of a dose to 1.00% of its original concentration? Ans: 1645 mins (27.4 hours); 30,400 mins (507 hours) c. How does this impact dosing for the medication