Patient Positioning and Preparation:
Patient Positioning:
Patients in the block group will be placed in a lateral position with the operated
shoulder on top before awakening from surgery. This positioning facilitates access to the
block site and ensures patient comfort.
Aseptic Technique:
The block site will be prepared by wiping it three times with 10% povidone-iodine to
ensure asepsis.
The linear ultrasound probe will be covered in a sterile manner to prevent contamination
during the procedure.
Ultrasound-Guided Block Procedure:
Probe Placement and Rib Identification:
The Hitachi brand linear ultrasound probe will be placed parallel to the scapular spine
on the surgical side.
The probe will be slid medially to identify the 2nd and 3rd ribs on the medial side of
the scapular spine. Accurate identification of these ribs is crucial for proper needle
placement.
Needle Insertion and Block Site Confirmation:
A block needle will be advanced under ultrasound guidance onto the 3rd rib. The
ultrasound guidance ensures precise needle placement, minimizing the risk of
complications.
Once the needle contacts the rib, it will be retracted by 1mm. This slight retraction
helps position the needle tip correctly for optimal drug delivery.
The block site will be confirmed by injecting sterile 0.9% NaCl. The spread of saline
under ultrasound visualization confirms the correct location.
Anesthetic Administration:
Following confirmation of the block site, 30ml of 0.25% bupivacaine will be administered
in a controlled manner. The controlled administration ensures a steady and effective
distribution of the anesthetic agent.
Perioperative Analgesia Management:
Pre-Awakening Medication:
Before awakening from surgery, both the block group and the non-block group will receive:
1g of paracetamol intravenously.
1mg/kg of tramadol intravenously.
Postoperative Analgesia:
Postoperative analgesia will be managed using a multimodal approach, including:
Intravenous patient-controlled analgesia (PCA) with 4mg/ml Tramadol HCl in 100ml NaCl.
The PCA will be set with no basal infusion, allowing patients to self-administer bolus
doses of 20mg with a lockout period of 20 minutes.
The total dose limitation will be set at 200mg over 4 hours to prevent overdose and
manage pain effectively.
Postoperative Assessment and Follow-Up:
VAS Score Monitoring:
Patients will be visited at the following time intervals postoperatively: 0, 1, 6, 12,
and 24 hours.
During each visit, patients will be asked to record their pain levels using the visual
analog scale (VAS) on a paper scale. This subjective measure provides valuable insight
into the patient's pain experience.
Opioid Consumption and Rescue Analgesia:
The amount of opioid used via PCA will be recorded to evaluate opioid consumption.
The need for rescue analgesia will be assessed and documented. If required, patients will
receive 50mg of Arveles intravenously.
Routine Postoperative Medication:
All patients will receive routine postoperative medication, including 4x1g paracetamol to
maintain baseline analgesia and reduce overall opioid requirements.
Randomization Process:
Randomization Protocol:
Patients scheduled for surgery will be randomly assigned to either the block group or the
non-block group to ensure unbiased allocation and comparability between groups.
Randomization will be performed using a computer-generated random number sequence,
ensuring that each patient has an equal chance of being allocated to either group.
Allocation concealment will be maintained by using opaque, sealed envelopes containing
the group assignments. These envelopes will only be opened after patient consent and
immediately before the block procedure.
Blinding:
The study will implement a single-blind design where the patients will be unaware of
their group assignment to minimize bias in self-reported outcomes.
The healthcare providers responsible for postoperative care and outcome assessment will
also be blinded to the group allocation to ensure objective evaluation of the study
endpoints.