Anterior and Posterior Approaches of Suprascapular Nerve Block
Condition: Shoulder Pain; Postoperative Pain; Diaphragmatic Paralysis; Subomohyoid Suprascapular Nerve Block; Anterior Suprascapular Nerve Block; Suprascapular Nerve Block
MeSH terms: Shoulder Pain; Respiratory Paralysis; Paralysis; Pain, Postoperative
Study type: Interventional

Summary: 
      Suprascapular nerve is a mixed motor and sensory peripheral nerve arising from the superior
      trunk of brachial plexus.The suprascapular nerve runs through the posterior triangle of the
      neck, anterior of the trapezius muscle and dorsal of the omohyoid muscle, in direction of the
      scapula. Suprascapular nerve block is performed by anterior and posterior approach. Posterior
      approach of the suprascapular nerve block has been shown for many years to provide effective
      analgesia in the shoulder region for the chronic and acute pain. There are studies showing
      that suprascapular block with anterior approach provides effective analgesia in shoulder
      arthroscopy.

      The aim of our study was to compare anterior and posterior approaches of suprascapular nerve
      block in terms of analgesic efficacy and patient safety.
    

Detailed description: 
      This study is a prospective randomized clinical trial will be conducted between March 2022
      and March 2023.Participant will divide into two groups as participant who underwent
      suprascapular nerve block with the anterior approach and participant who underwent
      suprascapular nerve block with the posterior approach. Bupivacaine 5 ml %0.5 will be injected
      both group. Diaphragmatic thickness fraction will be evaluated with ultrasound left and right
      7.-8. subcostal anterior axillary border with the participant with the semi-sitting position.
      Diaphragmatic thickness fraction will measure before the block and after 30 minutes the
      surgery. Participants will administered intravenous morphine patient controlled analgesia for
      24 hours stay. The amount of opioid analgesics given in both groups will be determined (in
      mg). Postoperative 4th, 6th, 12th, 24th hour Visual Analogue Scale scores of the participants
      and opioid consumptions until that hours will be evaluated. An addition participant will be
      determined according to the surgery.
    

Intervention name(s): Posterior suprascapular block; Anterior suprascapular block
Intervention type(s): Procedure; Procedure
Intervention description(s): Diaphragmatic thickness fraction will be evaluated in the participant underwent suprascapular block performed by posterior approach; Diaphragmatic thickness fraction will be evaluated in the participant underwent suprascapular block performed by anterior approach
Allocation: Randomized
Intervention model: Parallel Assignment
Intervention model description: participant with anterior suprascapular block ,group 1 participant with posterior suprascapular block, group 2
Masking: Single (Outcomes Assessor)
Primary purpose: Treatment
Keywords: Shoulder pain; Nerve Block; Diaphragmatic paralysis; Postoperative pain; Suprascapular block; Subomohyoid suprascapular block; Posterior Suprascapular block; Anterior Suprascapular block