الفهرس 
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Abstract
One of the main objectives of anesthesia is to alleviate the patient’s pain and agony, by ensuring the performance of surgical procedures without any discomfort. Elimination of postoperative pain is indispensable due to the central, peripheral and immunological stress response to tissue injury. So there is a need for extended analgesia without any side effects to achieve this goal.
The use of PECS I and PECS II or Serratus anterior blocks in breast cancer surgeries have become common to increase postoperative analgesia.
The purpose of this study was to evaluate the effect of both PECS II block versus and Serratus anterior block in patients undergoing modified radical mastectomy surgery. The duration of analgesia and effect on hemodynamics parameters were evaluated. Moreover, undesirable side effects were studied. forty patients were randomly allocated into two equal groups (20 patients): group (A) and group (B).
• group (A): received a PECSII block with 30 mL of bupivacaine 0.25%..
• group (B): received a serratus anterior plane block (SAPB) using the same volume of 30 ml bupivacaine 0.25%.
All patients were clinically assessed and routine preoperative investigations will be done: CBC, Coagulation profile, liver function tests, kidney function tests, fasting blood sugar and ECG.
The initial vital data were measured after applying the standard monitoring including pulse oximetry, non-invasive blood pressure and ECG.
Results of this study:
This study demonstrated that PECSII and serratus blocks have comparable analgesic properties in patients undergoing modified radical mastectomy. Both blocks were associated with reduced postoperative pain intensity and morphine consumption, intraoperative fentanyl requirement, and prolonged analgesia.
The two blocks were associated with hemodynamic stability, better sedation scores, and high satisfaction scores. The absence of major complications characterizes both blocks.
CONCLUSION
This study confirms that PECSII and serratus blocks provide similarly adequate analgesia following modified radical mastectomy.