The patient/client is to receive Mellaril (thioridazine) 150 mg po twice a day. The medication is available as Mellaril (thioridazine) 30 mg per milliliter. How many teaspoons should the nurse instruct the patient/client to take for each dose?
A) 1
B) 2
C) 3
D) 4

Question

Quizplus · Accepted Answer

When solving any problem, first check that the order and the supply are in the same weight measure. For this problem, the use of an equivalent is necessary (1 tsp = 5 mL) to change 5 mL to teaspoons. Estimate the amount to give. Formula Method: 150 mg/30 mg * 1 mL = 150/30 = 5 mL = 1 tsp. Proportion (Ratios): 1 mL : 30 mg :: x mL = 150 mg; 30 mg x = 150/30 = 5 mL = 1 tsp. Proportion (Fractions): 1 mL/30 mg = x mL/150 mg; 30x = 150/30 = 5 mL = 1 tsp. Use a conversion factor for dimensional analysis. Dimensional Analysis: 1 mL/30 mg *150 mg * 1 tsp/5 mL = 1 * 150 * 1 tsp/30 *5 = 150/150 = 1 tsp. For liquids, the four methods are set up just as for oral solids, except the supply includes a liquid measurement.

The Patient/client Is to Receive Mellaril (Thioridazine) 150 Mg Po