An IV started at 2250 is to complete in 4 hr 20 min. Calculate the completion time. 2250 420_______2670 Change the 70 min to 1 hr 10 min=2710Deduct 24 hr from 2710=0310 I don't understand this right here at all. How did it go from 2710 to 0310 can someone explain to me??

KelRN215, BSN, RN 1 Article; 7,349 Posts Specializes in Pedi. Has 16 years experience. Jan 23, 2013 An IV started at 2250 is to complete in 4 hr 20 min. Calculate the completion time. 2250 420_______2670 Change the 70 min to 1 hr 10 min=2710Deduct 24 hr from 2710=0310 I don't understand this right here at all. How did it go from 2710 to 0310 can someone explain to me?? 22:50 is 10:50 PM. There is no such time as 27:10 because there are only 24 hrs in a day. Honestly, you're making this more complicated than it needs to be. You add four hours to 22:50 and that takes you to 02:50. Twenty more minutes takes you to 03:10.

nurseprnRN, BSN, RN 2 Articles; 5,114 Posts Jan 24, 2013 It's a twenty-four hour clock. Midnight is 0000 (or sometimes 2400)One minute past midnight is (always) 0001One am is 0100two fifteen am is 0215six am is 0600Noon is 1200One minute past noon is 1201One pm is 1300 six pm is 1800seven forty five pm is 1945nine pm is 2100 Sometimes whole hours are just two digits--, 01, 05, 10, 14, 21... etc.This eliminates confusion between am and pm in charting.

brat514 7 Posts Jan 27, 2013 An IV started at 2250 is to complete in 4 hr 20 min. Calculate the completion time.2250420_______2670Change the 70 min to 1 hr 10 min=2710Deduct 24 hr from 2710=0310 I don't understand this right here at all. How did it go from 2710 to 0310 can someone explain to me??For me, the easiest would be to add the 420 to the time it was started: 2250 + 420 = 2670. Once you get the 2670, then you will subtract 2400 (since you're working off of a 2400 clock) so 2670 - 2400 = 210. So 0210 (2:10 am) would be the completion time.Hope it helps!

nurseprnRN, BSN, RN 2 Articles; 5,114 Posts Jan 27, 2013 Oopsy, brat514. 2670 - 2400 is not 210. It's 270, which is, in military time, 0310, ten past three am. Try using a clock face to look at this problem. You have a start time and a duration of four hours and twenty minutes. Start at 2250, 10:50 pm, ten minutes before 11pm. Add twenty minutes: 11:10 pm. Add four hours. 3:10 am. Done. Kel had it right, and you should look at her arithmetic to see where she got it right and you missed it. There will be a lot of these questions in your future. :)

brat514 7 Posts Jan 28, 2013 Oopsy, brat514. 2670 - 2400 is not 210. It's 270, which is, in military time, 0310, ten past three am.Try using a clock face to look at this problem. You have a start time and a duration of four hours and twenty minutes.Start at 2250, 10:50 pm, ten minutes before 11pm.Add twenty minutes: 11:10 pm. Add four hours. 3:10 am. Done. Kel had it right, and you should look at her arithmetic to see where she got it right and you missed it. There will be a lot of these questions in your future. :)Thank you grntea! Ya know, I had posted 0310 at first then overthought it and edited it. Oops!To the OP, sorry! I hope I didn't confuse you even more