Question

can you please solve these two questions: A nurse is preparing to administer verapamil 10mg by IV bolus to infuse over 2 minutes. Available is verapamil 2.5mg/mL. Drop factor of the tubing is 15 gtts/mL. How many mL will be administered in one dose?

2.A client is to receive lovenox 40 mg daily subcutaneously for prophylaxis following hip surgery. Available is 100 mg/mL. How much would the nurse administer?

Answer 1

Drug Dosage calculation formula:

D(Desired dose) X V (Vehicle – tablet or liquid) = Amount to be given

H(Dose on hand)

D= Ordered dose

H= Dose available as described in drug label or container

V=Form and amount in which drug comes / Amount on hand

1. Dose ordered = Inj. Verapamil 10mg

Dose on hand = Inj. Verapamil 2.5mg / 1ml

V(Amount on hand) = 1ml

Amount to give = 10/ 2.5 X 1= 4ml

2. Dose ordered = Inj. Lovenox 40mg

Dose on hand = Inj. Lovenox 100mg / 1ml

V(Amount on hand) = 1ml

Amount to give = 40/ 100 X 1= 0.4ml