Question

IV calculations 1. IV of 500ml of 0.9 normal saline is to infuse over 6 hours using 20 gtt/ ml tubing. a. How many mls/hr b. How many drops per minute (gtt/min) would you regulate the IV at? 2. IV of 150 ml of 0.9 normal saline is to infuse over 90 minutes using 15 gtt/ml tubing. c. How many mls/hr d. How many drops per minute (gtt/min) would you regulate the IV at? 3. IV of 500 ml of 0.9 normal saline is to infuse over 8 hours using 60 gtts/ml tubing. a. How many mls/hr b. How many drops per minute (gtt/min) would you regulate the IV at? 4. IV of 1000 ml of 0.9 normal saline is to infuse over 12 hours. IV tubing is 20 gtt/ml a. How mls per hour b. How many drops per minute would you regulate the IV at? 5. IV of D5 1/2NS at 100 cc/hr. IV tubing drip factor is 20 gtts/ml. What is the gtts/min 6. A patient is started on furosemide (Lasix) to promote diuresis. Lasix 2,000 mg in 200 ml is prescribed at 1 mg per min. You should set the IV pump at how many ml per hour? 7. 500 ml D5W with 500 mg Aminophylline to infuse at 150 ml/hr (20 gtts/ml). How many drops per minute?

Answer 1

1.

500ml NS is to infuse over 6 hours using 20 gtt/ml tubing.

a. Ns should be infused in 83.3 ml/hr.

500ml = 6hrs = 83.33ml/hr

b. You should regulate the IV in

Drop calculation formula -

(Volumein M1 = Timein Minutes) x dropfactor

(83.33ml = 60min) x 20gtt/ml = 27.77gtt/min

Answer - 28 drops/min

.2.

150 ml of NS is to infuse over 90 minutes

The drop factor is 15 gtt/ml

a. You should infuse 100 ml per Hour.

b.

(100ml = 60min) x 15gtt/ml = 25gtt/min

Answer - You should regulate IV in 25 drops/ min

3.

500 ml of NS is to infuse over 8 hours.

Drop factors - 60gtt/ml

a. You should infuse 62.5 ml per hour.

b.

(62.5ml = 60min) x 60gtt/ml = 62.5gtt/min

Answer - You should regulate IV in 62 drops/ min

4.

1000 ml of NS is Infuse over 12 hours

Drop factors 20gtt/ml

a. You should infuse 83.33 ml per hour.

b.

(83.33ml = 60min) x 20gtt/ml = 27.77gtt/min

Answer - You should regulate IV in 28 drops/ min