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COM Clinical Case Study, Chapter 6, Calculation of Basic IV Drip Rates Myra Robertson, age 18, 13 weeks pregnant, is admitted to the observation unit with dehydration related to hyperemesis gravidarum. No previous medical histord (Topics covered: calculating basic IV drip rates in drops per minute; determining hours an IV will run, adding medications to continuous IVs, intermittent piggyback drip rates) Medication orders: 1 liter 05 V2 NS at 200 ml/hour for 8 hours. Drip factor is 20 gtt/mL. Followed by: 1 liter D5 V2 NS at 100 mWhour for hours. Drip factor is 15 gtt/mL. Followed by: 1 liter 05 V2 NS at 50 ml/hour. Drip factor is 10 gtt/mbu metoclopramide 20 mg in 50 mL D5W 98 hours. Infuse over 15 minutes. Drip factor is 60 gtt/mL. hydrocortisone 100 mg IV. Drip factor is 60 gtt/mL. 100 mL D5W a 12 hours. Infuse over 30 minutes Calculate the doses (round to the nearest whole number): 1. What is the drip rate for the first IV order (1 liter D5 12 NS at 200 ml/hour)? The IV started at 9 PM, when will it be finished? 2. What is the drip rate for the second IV order (1 liter D5 1/2 NS at 100 mL/hour)? 3. What is the drip rate for the third IV order (1 liter D5 12 NS at 50 mL/hour)? 4. metoclopramide. How many mL to add to the IV? Supply: 5 mg/mL. What is the drip rate? 5. hydrocortisone. How many mL to add to the IV? Supply: 250 mg in 2 ml. What is the drip rate? Critical Error: The nurse calculates the drip rate for the first IV (1 liter 05 V2 NS at 200 ml/hour For 8 hours), using 480 minutes (8 hours * 60 minutes) in the formula. What error could happen? RE GRADESMORE.COM
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