When will infusion complete?

Iliauna · Dec 23, 2014

It adds up. You're probably tired. Look again in the morning.

Iliauna · Dec 23, 2014

2045 + 0.5 (that means half an hour/30 mins) which would equal 21:15

**NICU Guy, BSN, RN** · Dec 23, 2014

If it started at 0845 and ran for 12.5 hrs., it would finish at 9:15 pm. 9:15 in military time (24 hr system) would be 2115.

Theone40 · Dec 23, 2014

thanks... i don't know why it did not click that .5 is 1/2 hour......:)

Esme12, ASN, BSN, RN · Dec 24, 2014

Sometimes our brains are just fried. ((HUGS))

Theone40 · Dec 27, 2014

I think my infusion times are still off or incorrect ? would love some feedback..... I think I'm stressing myself out :cry:

The physician orders Telavancin 30mg/hr. IV. Available: Telavancin 1g in 500ml NS. The drip is stated at 1030am. The drop rate factor is 60ggt/ml ?

What is the flow rate by IV ?

30mg/1000mg x 500ml = 15ml/hr

What is the ggt/min ?

15ml/hr x 60ggt/min x1h/60min = 15ggt/min

What time will the infusion be complete ?

500ml/15ml/hr =33.3 h

1030+33= 0730+.3 (.3x60min) =18min = 0748 infusion completion

Physician order is for heparin 20 units/kg. Patient weight is 165 lbs. Available is 20,000 units of heparin in 500ml of NS. The drop rate factor is 20ggt/ml. The heparin drip was started at 1600.

165lb= 75kg

20u/kg x 75kg =1500 u/kg

20,000u/500ml = 40 u/ml

What is the ml/hr ?

1500/40 =37.5 ml/hr

What is the gtt/min?

37.5ml/hr x 20ggt/min x 1h/60min =12.5 = 13ggt/min

When will the infusion be complete ?

500ml/37.5ml/hr=13.3h

1600+13=0500 +.3 (.3x60)=0518 completion

KelRN215, BSN, RN · Dec 27, 2014

When the answer comes out as .33333 repeating, that's 1/3. 1/3 of an hr (60 min) is 20 min. For the first one, you need to consider military time. If an infusion starts at 10:30 (am) and takes 33.33 hours to complete, it's going to finish at 1950 the next day (24 hours to 10:30 the next day, then another 9.333 hours takes you to 19:50), not 0750. 0750 is 7:50 AM, 19:50 is 7:50 PM.

The second one looks right to me, but I'd call the answer 05:20.

nurseprnRN, BSN, RN · Dec 29, 2014

And it's not ggt for drop, it's gtt :) From the Latin gutta, "drop."

Guests · Jan 8, 2015

thanks... i don't know why it did not click that .5 is 1/2 hour......:)

I can tell you exactly why it didn't "click."

It's because you didn't scrupulously use the units throughout your work.

Guests · Jan 8, 2015

BTW, a good way to get comfortable with elapsed time is playing with Excel's number formats.

Excel stores a time value as a decimal number which can be converted to a fraction with a denominator of 24 (as in, 24 hours = 1 day). The format can be changed to display however you wish though the underlying whole-number value does not change.

Excel will also convert between fractions and decimals for you.

Part of numeracy comes from simply 'playing' with numbers and equations and, with calculators, spreadsheets, and Google, it's never been easier. For example, type "35 minutes in hours" in the Google search box

nurseprnRN, BSN, RN · Jan 8, 2015

Know whether your 24-hour clock uses 2400 or 0000 for midnight. The next minute is 0001 in both cases, but sometimes they use 24(00) for midnight and sometime 00(00). My kid in the maritime says they call the 8pm to midnight "the Cinderella watch" and midnight to 4am is the "balls to 04 watch." 00 = balls, get it?