1. Automated Boluses and Delayed-Start Timers Prolong Perineural Local Anesthetic Infusions and Analgesia Following Ankle and Wrist Orthopedic Surgery: A Case-Control Series
- Author
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Finneran, John J, Baskin, Paola, Kent, William T, Hentzen, Eric R, Schwartz, Alexandra K, and Ilfeld, Brian M
- Subjects
Biomedical and Clinical Sciences ,Clinical Sciences ,Neurosciences ,Neurodegenerative ,Pain Research ,Adult ,Analgesia ,Analgesia ,Patient-Controlled ,Anesthetics ,Local ,Ankle ,Case-Control Studies ,Female ,Humans ,Infusion Pumps ,Male ,Middle Aged ,Nerve Block ,Orthopedic Procedures ,Pain Management ,Pain ,Postoperative ,Ropivacaine ,Wrist ,Acute Pain ,Ultrasonography ,Medical and Health Sciences ,General Clinical Medicine ,Biological sciences ,Biomedical and clinical sciences - Abstract
BACKGROUND Continuous peripheral nerve blocks can be administered as continuous infusion, patient-controlled boluses, automated boluses, or a combination of these modalities. MATERIAL AND METHODS Ten patients undergoing either ankle (5) or distal radius (5) open reduction and internal fixation received single-injection ropivacaine sciatic nerve block or infraclavicular brachial plexus block and catheter. Infusion pumps were set to begin administering additional ropivacaine 6 h following the initial block as automated boluses supplemented with patient-controlled boluses. RESULTS Patients had similar pain scores when compared to previously published controls; however, local anesthetic consumption was lower in the patients, resulting in increased infusion and analgesia duration by 1 or more days in each group. CONCLUSIONS For infraclavicular and popliteal sciatic catheters, automated boluses may provide a longer duration of analgesia than continuous infusions following painful hand and ankle surgeries, respectively.
- Published
- 2021