• Anaesthesiol Intensive Ther · Jan 2017

    Randomized Controlled Trial Comparative Study

    Randomised controlled trial of analgesic effectiveness of three different techniques of single-shot interscalene brachial plexus block using 20 mL of 0.5% ropivacaine for shoulder arthroscopy.

    • Michał Jan Stasiowski, Michał Kolny, Marek Zuber, Radosław Marciniak, Ewa Chabierska, Przemysław Jałowiecki, Aleksandra Pluta, and Bartłomiej Możdżyński.
    • Department of Anaesthesiology and Intensive Therapy, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, St. Barbara's Memorial Hospital WSS no. 5 Trauma Centre, Sosnowiec, Poland. mstasiowski.anest@gmail.com.
    • Anaesthesiol Intensive Ther. 2017 Jan 1; 49 (3): 215-221.

    BackgroundShoulder arthroscopic procedures impose a challenge to anaesthesiologists in terms of postoperative analgesia. Proper pain management after arthroscopic procedures improves patient satisfaction and facilitates early rehabilitation.MethodsWe performed a randomized, prospective clinical study to assess the influence of anthropometric parameters and IBPB technique on the quality of postoperative analgesia. A total of 106 randomly selected patients of ASA I-III status scheduled for elective shoulder arthroscopy. Reasons for exclusion were neurological deficit in the upper arm, allergies to amide-type local anesthetics, coagulopathy, and pregnancy.The patients received 20 mL of 0.5% ropivacaine for an ultrasound-guided interscalene brachial plexus block (IBPB) (group U), peripheral nerve stimulation (PNS)-confirmed IBPB (group N), or ultrasound-guided, PNS-confirmed IBPB (dual guidance; group NU).ResultsWe observed that the three groups did not differ in mean time of sensory and motor block terminations. In individual cases in each group, sensory block lasted up to 890-990 minutes, providing satisfactory long lasting postoperative analgesia in patients receiving IBPB. We observed a negative correlation between body mass index and termination of motor block (P = 0.037, Pearson's correlation coefficient) and a positive correlation between age and termination of sensory block (P = 0.0314, Pearson's correlation coefficient) in group U compared to the other two groups. We found a positive correlation between male gender and termination of motor block (P = 0.0487, Pearson's correlation coefficient) in group N compared to the other two groups.ConclusionIn our study, patients received satisfactory analgesia in the postoperative period regardless of technique used, age, gender, or potentially uncommon anthropometry.

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