Answer :
Approximately 2.88 mL of lidocaine 2% solution should be added to the IV bag.
First, we need to convert the patient's weight from pounds to kilograms.
There are 2.2 pounds in a kilogram, so the patient's weight in kilograms is 169 pounds \/ 2.2 = approximately 76.82 kilograms.
The prescribed dose is 0.75 mg/kg, so the total dosage required is
0.75 mg/kg * 76.82 kg
= 57.615 mg of lidocaine.
Lidocaine 2% is equivalent to 20 mg of lidocaine per milliliter since 2% means 2 grams per 100 milliliters, and 2 grams is 2000 milligrams.
To find out how many milliliters of the 2% solution we need, we divide the total dosage required by the concentration:
57.615 mg \/ 20 mg/mL = approximately 2.88 mL.
Hence, approximately 2.88 mL of lidocaine 2% solution should be added to the IV bag.
