The goal of this clinical trail is to determine if bilateral erector spinae plane block alone can provide good perioperative analgesia for abdominoplastic surgery patients or it is better to give combined bilateral rectus sheath and erector spinae plane blocks to achieve effective intraoperative and postoperative analgesia with minimal morphine consumption in such operations in which there is an extensive surgical dissection and a high risk of respiratory problems.
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Primary outcome
Timeframe: one hour