Diaphragmatic Paralysis Comparison Between Local Anesthetic Volumen Doses After Interscalene Block

Summary

Arthroscopic shoulder surgery involves dynamic and severe postoperative pain. Interscalene brachial plexus block (IBPB) provides adequate analgesia but the spread of local anaesthetics administered causes a phrenic nerve block which entrains a non-negligible incidence of Hemidiaphragmatic paralysis acute (HDPA). This is a comparative, prospective, Unicenter, double-blind, two-arm, randomized and controlled clinical trial. 48 patients will be included. This RCT would demonstrate a low volume dose IBPB decrease the HDPA after IBPB in patients undergoing SAS, by using spirometry and ultrasound and it will not provide inferior postoperative analgesia according to opioid requirements of postoperative PCA in comparison to standard volume dose used in current practice.

Timeline

Start

2020-02-11

Primary completion

2021-10-20

Completion

2021-10-20

Publications

• Background Lopez Escarraga VM, Dubos Espana K, Castillo Bustos RH, Peidro L, Sastre S, Sala-Blanch X. Diaphragmatic thickness ratio (inspiratory/expiratory) as a diagnostic method of diaphragmatic palsy associated with interescalene block. Rev Esp Anestesiol Reanim (Engl Ed). 2018 Feb;65(2):81-89. doi: 10.1016/j.redar.2017.09.008. Epub 2017 Nov 7. English, Spanish.
• Background Urmey WF, McDonald M. Hemidiaphragmatic paresis during interscalene brachial plexus block: effects on pulmonary function and chest wall mechanics. Anesth Analg. 1992 Mar;74(3):352-7. doi: 10.1213/00000539-199203000-00006.
• Background Urmey WF, Talts KH, Sharrock NE. One hundred percent incidence of hemidiaphragmatic paresis associated with interscalene brachial plexus anesthesia as diagnosed by ultrasonography. Anesth Analg. 1991 Apr;72(4):498-503. doi: 10.1213/00000539-199104000-00014.
• Background Thackeray EM, Swenson JD, Gertsch MC, Phillips KM, Steele JW, Burks RT, Tashjian RZ, Greis PE. Diaphragm function after interscalene brachial plexus block: a double-blind, randomized comparison of 0.25% and 0.125% bupivacaine. J Shoulder Elbow Surg. 2013 Mar;22(3):381-6. doi: 10.1016/j.jse.2012.06.011. Epub 2012 Sep 1.
• Background Stundner O, Meissnitzer M, Brummett CM, Moser S, Forstner R, Kokofer A, Danninger T, Gerner P, Kirchmair L, Fritsch G. Comparison of tissue distribution, phrenic nerve involvement, and epidural spread in standard- vs low-volume ultrasound-guided interscalene plexus block using contrast magnetic resonance imaging: a randomized, controlled trial. Br J Anaesth. 2016 Mar;116(3):405-12. doi: 10.1093/bja/aev550.
• Oliver-Fornies P, Ortega Lahuerta JP, Gomez Gomez R, Gonzalo Pellicer I, Oliden Gutierrez L, Vinuales Cabeza J, Gallego Ligorit L, Orellana Melgar CE. Diaphragmatic paralysis, respiratory function, and postoperative pain after interscalene brachial plexus block with a reduced dose of 10 ml levobupivacaine 0.25% versus a 20 ml dose in patients undergoing arthroscopic shoulder surgery: study protocol for the randomized controlled double-blind REDOLEV study. Trials. 2021 Apr 19;22(1):287. doi: 10.1186/s13063-021-05216-6.

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