Research Article
Autologous Blood Transfusion after Local Infiltration Analgesia with Ropivacaine in Total Knee and Hip Arthroplasty
Table 2
Comparison of studies in autotransfusion after LIA with ropivacaine.
| Characteristic | Present study | Gill et al. [6] | Breindahl et al. [7] | Parker et al. [5] | Stringer et al. [21] |
| Number of patients | 25 TKA, 27 THA | 10 THA* | 20 TKA, 10 THA | 20 TKA | 15 TKA, 20 THA | Autotransfusion performed | Yes | Yes | No | Yes | No | Ropivacaine dose for LIA (mg) | 200 | 400 | 200 | 150 | 360–400 | Drainage blood volume (mL) | 93–977 | <1250 | 50–620 | 300–700 | 10–905 | Drainage blood content of ropivacaine (mg) | <7.2 | <6 | 0.28–12 | <2.6 | 0.53–27 | Infusion rate (mg/h) | 0.42–12 | — | — | 0.7–4.7 | — | Serum concentration before autotransfusion (μg/mL) | <0.79 | — | <1.1 | <0.79 | <2 | Serum concentration after autotransfusion (μg/mL) | <1.0 | — | — | <1.5 | — | Free ropivacaine concentration after autotransfusion (μg/mL) | <0.038 | — | — | — | — | Max. concentration after bolus injection I | 1.9 | — | 1.5 | — | — | Max. concentration after bolus injection II | 2.6 | — | — | — | — |
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*
Peri-articular multimodal analgesia (PMDI).
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