Postoperative Analgesia After Knee Surgery: A Comparison of Three Different Concentrations of Ropivacaine for Continuous Femoral Nerve Blockade

Abstract

Ropivacaine 0.2% and 0.3% were similar in terms of analgesic quality. Initial infusion rates should be adjusted to 15 mL/h to obtain effective analgesia.

A Randomized Comparison of Ropivacaine 0.1% and 0.2% for Continuous Interscalene Block After Shoulder Surgery

“…However, during the next 24 hours, both concentrations provided similar analgesia. Consistent with findings from a previous study on continuous femoral nerve blockade, 8 our results suggest that for continuous interscalene block after shoulder surgery, decreasing a ropivacaine concentration from 0.2% to 0.1% reduces the analgesic effectiveness of the technique.…”

Reply to the Letter to the Editor: Single-injection or Continuous Femoral Nerve Block for Total Knee Arthroplasty?

“…We agree that Brodner and colleagues [3] previously have concluded that ropivacaine 0.2% and ropivacaine 0.3% were equivalent in terms of pain outcomes compared to ropivacaine 0.1% when used as continuous infusion for femoral nerve blocks. However, Brodner and colleagues designed their study to test the hypothesis that ropivacaine 0.3% was superior to ropivacaine 0.2% or 0.1%, and the authors' conclusion that 0.1% was ineffective was based on an interim statistical analysis of only 20 patients.…”

Adductor Canal Block Versus Femoral Nerve Block for Analgesia After Total Knee Arthroplasty

“…[3][4][5] So far, attempts to reduce quadriceps involvement after femoral nerve block (FNB) without compromising analgesia have not succeeded. 1,[6][7][8] Unlike FNB, adductor canal block (ACB) is predominantly a sensory block, 9 which preserves quadriceps muscle strength and ambulation ability better than FNB. 2 A study in healthy volunteers showed that FNB reduced quadriceps strength by 49% from baseline, compared with only 8% with ACB.…”