calculation question

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Hi i need some help in understaning this exam question i got wrong please

A pt is on heparin she is too receive an iv of heparin: 5000units over 15mins . Following the bolus, she is to receive a continuous infusion of heparin at 1700units/h. supply; heparin 10 000 units/ml in a multidose vial and heparin infusion solution of 25 000 units in 500ml of saline. Calculate the rate of flow in millilitres per hour for the bolus injection. The heparin is mixed in 50ml of saline.

thankyou

sue:bugeyes:

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Specializes in med/surg, telemetry, IV therapy, mgmt.

a pt is on heparin she is too receive an iv of heparin: 5000units over 15mins . following the bolus, she is to receive a continuous infusion of heparin at 1700units/h. supply; heparin 10 000 units/ml in a multidose vial and heparin infusion solution of 25 000 units in 500ml of saline. calculate the rate of flow in millilitres per hour for the bolus injection. the heparin is mixed in 50ml of saline.

50 ml/15 minutes x 60 minutes/1 hour (conversion factor) =
200 ml/hour
(flow rate for the bolus)

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Thankyou for your help Daytonite

could you help me with the formula pls i need to understand how to work the formula out for the answer.

Order vasopressin 5 units im stat and repet in 4hrs prn.Supply 1ml vial that indicates 20mg/ml. Which of the following would deliver one dose?

Answer 0.5

0.25

thankyou sue

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Thankyou for your help Daytonite

could you help me with the formula pls i need to understand how to work the formula out for the answer.

Order vasopressin 5 units im stat and repet in 4hrs prn.Supply 1ml vial that indicates 20mg/ml. Which of the following would deliver one dose?

Answer 0.5

0.25

thankyou sue

are you sure this is the exact wording? you have two different measures here....units vs mgs?

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Specializes in med/surg, telemetry, IV therapy, mgmt.

order: vasopressin 5 units im stat and repeat in 4hrs prn.

supply: 1ml vial that indicates 20 units/ml.

which of the following would deliver one dose?

answer 0.5 ml, 0.25 ml

use the formula:
dose desired
divided by
dose on hand
multiplied timesthe
amount that the dose on hand comes in
equals
the amount to give.

5 units
(dose desired)/
20 units
(dose on hand) x
1 ml
(amount that the dose on hand come in)
=
0.25 ml
(amount to give)

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Hi Daytonite thankyou for your help again and yes that is the correct amounts on the paper.

cheers

sue

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