Total knee replacement

Last modified: 02 March 2023, 11:23:51 AM AEDT
Anaesthetic considerations1 / 1
  • Pre-op

  • Intra-op

  • Consider GA = can be difficult for patient to lie supine for 1.5 hours

    • Spinal
    • LMA
    • P 2.0-3.0
      • Will need higher Ce as the spinal wears off
    • Entropy
  • spinal #1

    • 4 mL 0.5% heavy bupivacaine
    • 100 mcg morphine
    • can add 30 - 50 mcg clonidine
    • sit up for 15 minutes
    • reverse Trendelenburg
    • have metaraminol infusion started
  • spinal #2

    • 3 mL plain 0.5% bupivacaine
    • 20 mcg fentanyl = 0.4 mL
    • 100 mcg morphine =
  • propofol TCI 2.5-3

  • midazolam 1-5 mg

  • LMA + GA

  • Technique

    • Spinal 2.4 mL heavy + F15 + M100
    • Adductor canal catheter
    • LMA because supine and AW obstruction
    • TAX
  • Post-op

  • Long-acting opioid

    • Targin 10/5 BD
    • tapentadol SR 50 mg BD
  • Short-acting opioid PRN

    • Tapentadol 50mg QID PRN
    • Endone 5-10 mg Q3H (has a shorter dose interval than tapentadol)
  • Paracetamol 1g QID

  • NSAID

    • celecoxib 200 mg BD
    • reduce dose to 100 mg BD for
      • elderly = 70+
      • low body weight