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October 12, 2025Regional Anesthesia & Pain Medicine

The Effects and Side Effects of Interscalene Brachial Plexus Block by Posterior Approach

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Authors

GDGüner DağlıSanko UniversityMGM. Erdal GüzeldemirGülhane Askerî Tıp AkademisiHAHakan Volkan ACARSağlık Bilimleri Üniversitesi

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Overview

Observational analysis finds decreased pulmonary function tests in patients after interscalene block, suggesting potential respiratory complications.

Key Points

  • Pulmonary function tests showed a significant decrease after the interscalene block, raising safety concerns.
  • FEV 1 dropped 19.7% at 5 minutes after the block (P = .0525), showing decreased lung function.
  • The method also resulted in hemidiaphragmatic paresis, mirroring issues seen with the lateral approach.
  • Interscalene block by posterior approach may not be effective for satisfactory anesthesia in forearm and hand surgery.

Cite This Study

Dağlı et al. (1998) studied this question.

synapsesocial.com/papers/68eb6f7ceea689731b300660https://doi.org/10.1136/rapm-00115550-199823010-00016
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Comparison of Ultrasound-Guided Supraclavicular, Infraclavicular and Below-C6 Interscalene Brachial Plexus Block for Upper Limb Surgery: A Randomised, Observer-Blinded Study2015 · 32 citations
  2. 2Comparison of Interscalene Brachial Plexus, Anterior Suprascapular Nerve, and Costoclavicular Brachial Plexus Blocks in Arthroscopic Shoulder Surgery: A Prospective Observational Study2025
  3. 3Phrenic Nerve Block Caused by Interscalene Brachial Plexus Block: Effects of Digital Pressure and a Low Volume of Local Anesthetic1999
  4. 4A Comparative Study between Ultrasound Guided Interscalene and Ultrasound Guided Suprascapular Nerve Blocks in Postoperative Pain and Hand Motor Power Affection in Shoulder Scope Surgeries2024
  5. 5Infraclavicular Brachial Plexus Block Effects on Respiratory Function and Extent of the Block1998