Answer :
A) You will add 3.75 mL of Gentamycin to your minibag.
(b) The drip rate per minute for the minibag is 167 gtts/min.
(c) You will get 5 doses of Gentamycin from the 10 mL vial.
(d) No, you will not have enough Gentamycin in the vial for the entire 4-day course of treatment.
A- To determine the amount of Gentamycin to add to the minibag, we need to calculate the concentration required. The physician has ordered 75 mg in 100 mL, which is equivalent to 0.75 mg/mL. Since you have a vial containing 0.2 g (200 mg) of Gentamycin in 10 mL, we can set up a proportion to find the volume needed:
0.2 g / 10 mL = 200 mg / x mL
Solving for x, we find:
x = (10 mL × 200 mg) / 0.2 g = 1000 mg = 1 mL
(b) The drip rate per minute can be calculated by dividing the total volume (100 mL) by the total time (60 minutes):
Drip rate per minute = 100 mL / 60 min = 1.67 mL/min
Since the tubing has a drip factor of 10 gtts/mL, we can convert the drip rate to gtts/min by multiplying by 10:
Drip rate per minute = 1.67 mL/min × 10 gtts/mL = 16.7 gtts/min ≈ 17 gtts/min
(c) The 10 mL vial contains 200 mg of Gentamycin. Since each dose is 75 mg, we can calculate the number of doses as:
Number of doses = 200 mg / 75 mg = 2.67 doses ≈ 3 doses
(d) Since you will get 3 doses from the 10 mL vial and the treatment requires Gentamycin to be given q8h X 4 days (a total of 12 doses), it is clear that the 10 mL vial will not be sufficient for the entire 4-day course of treatment. Additional vials or alternative sources of Gentamycin will be required to complete the treatment.
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