IV Therapy | Part Four – Calculating Flow Rates

Calculating Flow Rates

Volume in mL x Drip = Flow rate (drops per minute)

Time of infusion

Factors that cause the flow rate to vary:

  • Vein spasm
  • Vein pressure changes
  • Patient movement
  • Manipulations of the clamp
  • Bent or kinked tubing
  • IV Fluid viscosity
  • Height of the infusion bag
  • Type of administration set
  • Type and position of the venous access device

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