Reference no: EM133486548

Homework: Dehydration Calculations

Daily Maintenance Fluid Requirements: Hockenberry Table 22-1

Daily Maintenance Fluid Requirements
Body Weight	Amount fluid per Day
1 to 10 kg	100 mL/kg
11 to 20 kg	1000 mL + 50 mL/kg for each kg > 10 kg
>20 kg	1500 mL + 20 mL/kg for each Kg > 20 kg

I. Calculate the mL/day and the IV rate (ml/hr)

a) Infant weights 6 kg
b) Toddler weighs 14 kg
c) Preschooler weighs 22 kg
d) School age child weighs 33 kg

II. Calculate IV fluid bolus for resuscitation: use NS or LR 10-20 mL/kg

a) Infant weighs 8 kg
b) Child weighs 20 kg

Practice questions: If order is for 400 mL over 15 minutes and the child weighs 20kg, how many mL/kg will the child receive? At what rate should the IV pump be set?

ORT (Oral Replacement Therapy for acute diarrhea)

Mild 5-6% give ORS 50 mL/kg within 4 hours
Moderate 7-9% give ORS 100 mL/kg within 4 hours

Severe ≥ 9% give Intravenous fluids (lactated Ringer solution), 40 ml/kg until pulse and state of consciousness return to normal; then 50-100 ml/kg or ORS

III. Calculate the replacement fluid needed for each child below:

1. 15 kg child with moderate dehydration: Give _____ORS within next 4 hours

2. 9 kg child with mild dehydration: Give ______ ORS within next 4 hours

a. This 9 kg child has one diarrhea stool so add 10 mL/kg ORS within next hour. Additional volume to give_______mLORS in next hour.

Expected Urinary Output by Age

Expected urine output
Infant: 2 mL/kg/hr
Child: 1 mL/kg/hr
Adolescent: 30 mL/hour or more

IV. Calculate the expected urinary output for each child below:

A 5-year-old returns from PACU at noon. The child weighs 28 kg. The child is NPO with IV fluids running at 70mL/hr. The first void of 100 mL occurs at 1900.

A. What is the expected urine output for this child after 7 hours?

B. How many mL/kg/hr happened with this void?

C. Is this normal, above or below the expected urine output?

D. What nursing action, if any, should be taken?

V. Calculate the urine output for the shift: Use volume/weight/time formula

A. The urine output for a 12-hour shift 420 mL for a 10 kg toddler ________mL/kg/hr

B. The urine output for a 6-hour period 120 mL for a 15 kg preschooler ______mL/kg/hr.

C. The urine output for a 5-hour period1500 mL for a 35 kg child _______mL/kg/hr.