The Serrato Posterosuperior Block (SPSIP) is a recently discovered technique that provides analgesia to the hemithorax, shoulders, neck and back. At an anatomical level, it has been seen that this technique allows the diffusion of local anesthetic starting from C7 proceeding dorsally up to T10 by sectioning the trapezius, latissimus dorsi, rhomboid and erector spinae muscles. The serratus anterior block (SAPB) is a technique that allows local anesthetic to be injected between the serratus anterior muscle and the intercostal muscles (deep plane) or between the latissimus dorsi muscle and the serratus anterior muscle (superficial plane), also providing analgesia at of the chest wall. This study aims to compare the analgesic efficacy of SPSIPB and SAPB in patients undergoing radical mastectomy for breast cancer
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
46
Under ultrasound guidance; local anesthetic will be injected in the plane between the posterior aspect of the serratus posterior superior plane and the ribs
Under ultrasound guidance; local anesthetic will be injected in the plane between the posterior aspect of the serratus anterior and the external intercostal muscles and ribs
Pain at 0 hours after surgery
The primary objective of the study is to evaluate whether there is a difference between SAP block and SPSIP block at 0 hours after surgery at rest measure with visual analogic scale (0-10)
Time frame: 0 hours after surgery
Pain at 6 hours after surgery
Evaluate whether there is a difference between SAP block and SPSIP block at 6 hours after surgery at rest measure with visual analogic scale (0-10)
Time frame: 6 hours after surgery
Pain at 12 hours after surgery
Evaluate whether there is a difference between SAP block and SPSIP block at 12 hours after surgery at rest measure with visual analogic scale (0-10)
Time frame: 12 hours after surgery
Pain at 24hours after surgery
Evaluate whether there is a difference between SAP block and SPSIP block at 24 hours after surgery at rest measure with visual analogic scale (0-10)
Time frame: 24 hours after surgery
Intraoperative Opioid consumption
Intraoperative opioids consumption (remifentanyl measured as mcg/kg)
Time frame: During the surgery(From patient intubation to patient extubation)
Postoperative Opioid consumption
Postoperative use of rescue analgesics (measured as yes or no)
Time frame: From extubation to 24 hours post-enrollment
Postoperative Nausea and Vomiting
Postoperative Nausea and Vomiting defined as patient reporting nausea and vomiting or requiring drugs for nausea or vomiting
Time frame: From extubation to 24 hours post-enrollment
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