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Intraoperative Fluid Dosing in Adult Patients

Calculators  Multiple body systems
Intraoperative fluid dosing in adult patients is practical tool utilized to given IV fluids to the patient during surgery
Weight
k
Time spent NPO
h
Estimated severity of trauma to tissue
Minimal: ex. laparoscopy, hernia repair. Moderate: ex. open appendectomy, open cholecystectomy. Severe: ex. bowel resection.
Minimal
Moderate
Severe
Result:

Background

Measured Factor
IV fluid dosing
Measured Factor Disease
  • Trauma to tissue during surgery
Measured Factor Detail
Intraoperative fluid dosing in adult patients is practical tool utilized to given doses of  IV fluids to the patient during surgical treatment. It is used to improve the postoperative outcomes with fewer renal, pulmonary, and gastrointestinal complications. The calculation of score takes into account patient features such as weight of patient and estimated severity of trauma to tissue.
Speciality
General Surgeon
Body System
Multiple body systems
Formula
Hourly maintenance fluid, mL/hr = body weight, kg + 40 mL NPO fluid deficit, mL = hourly maintenance fluid, mL/hr × time spent NPO, hrs 1st hour fluids: ½ NPO fluid deficit + hourly maintenance fluid 2nd hour fluids: ¼ NPO fluid deficit + hourly maintenance fluid + fluid loss from surgical trauma* 3rd hour fluids: ¼ NPO fluid deficit + hourly maintenance fluid + fluid loss from surgical trauma* 4th hour fluids and beyond: trauma fluid loss + Hourly fluid loss from surgical trauma*
Measured Factor Low Impact
  • In minimal trauma the fluid loss is 2-4 mL/kg/hr
Measured Factor High Impact
  • In moderate trauma the fluid loss is 4-6 mL/kg/hr
  • In severe trauma the fluid loss is 6-8 mL/kg/hr

Result Interpretation

Ranges Ranges
  • Critical High: 6-8
Result High Conditions
  • Heart failure
  • COPD
  • kidney failure on dialysis
False Positive
  • Unnecessary perioperative interventions
References: 2

References

  1. Corcoran T, Rhodes JE, Clarke S, Myles PS, Ho KM. Perioperative fluid management strategies in major surgery: a stratified meta-analysis. Anesth Analg. 2012;114(3):640-51.
  2. Shin CH, Grabitz SD, Timm FP, et al. Development and validation of a Score for Preoperative Prediction of Obstructive Sleep Apnea (SPOSA) and its perioperative outcomes. BMC Anesthesiol. 2017;17(1):71.