Serratus Anterior Plane Block: Ultrasound Guided Versus Anatomical Landmark, A Randomized Control, Non-Inferiority Trial

Gynecomastia means enlarged male breast. Minimally invasive liposuction and surgical intervention are possible remedies for such cases. Postoperative pain can be controlled by opioids or regional blocks like serratus anterior plane block. Ultrasound guided blocks are associated with high success rate; however, anatomical landmark guided blocks may give similar results. Our hypothesis was that landmark guided serratus anterior plane block would be non-inferior to ultrasound plane block. Subjects presenting for gynecomastia surgery will receive ultrasound guided block in one side (US group) and landmark guided block in the other side (LM group) with the same volume (25) ml and concentration (0.25 %) of bupivacaine. The primary outcome will be visual analogue score. Secondary outcomes include patient satisfaction and incidence of complications like pneumothorax. It will be carried out over 40 male patients, aged from (18 - 60) year-old, with ASA I or II classes who will undergo elective gynecomastia surgery. Patient with BMI ≥ 35, history of previous chest surgery, drug abuse, allergy to local anesthetics, psychiatric problems or patient refusal will be excluded from participation