Question

please help solve # 3&4

written out please !

PERCENT (%) AND RATIO SOLUTION LABELS Drugs labeled as percentage solutions often express the dosage strength in metric mea sures in addition to percentage strength. The lidocaine label in Figure 9-6, a 2% solu- tion, is an example. But directly underneath this is a "20 mg/ml" designation. Lidocaine HCl is most often ordered in mg, but it is also used as a local anesthetic, and when it is, a physician may ask you to prepare a volume dosage specifying % strength. PROBLEMS 9.3 Refer to the lidocaine label in Figure 9-6 to answer the following questions. 1. How many mL are needed for a 10 mg dosage? 2. How many mL for a 20 mg dosage? 3. If you are asked to prepare 5 mL of a 2% solution, how many mL would you draw up? 4. If you are asked to prepare 15 mg? Lidocaine 20/ NDC 10019-019-57 Each contains decine hydro- chloride 20 mg sodium chloride mg Injection 5070 Sodium hy HCI Injection, USP droxide and or hydrochloric acid used 70 needed for a t (20 mg/mL) Ronly Usul Desa Spage insert for complete prescribing nation FOR INFILTRATION AND NERVE BLOCK Starea de temperature NOT FOR SPINAL OR EPIDURAL ANESTHESIA 13 50 mL Multiple Dose Vial Baxter SLEDERLE Barber heathcar e wy. St. Cherry But, f Healthcare Images courtesy of Corporation All rights reserved FIGURE 9-6 Answers 1. 0.5 mL 2. 1 ml 3. 2 ml 4. 1.5 mL

Answer 1

1.0.5ml

Lidicaine 2% = 20mg/ml

1ml=20mg

0.5ml=10mg

2.1ml

1ml=20mg

3. 5ml

4.0.75ml