Postoperative pain is an important issue in patients underwent mastectomy and axillary dissection surgery. Postoperative effective pain treatment provides early mobilization and shorter hospital stay. The US-guided pectoral nerve block (PECS) may be used for postoperative pain treatment following breast surgery. It is a novel interfascial block that was defined by Blanco. Rhomboid intercostal block (RIB) is a novel block and was first described by Elsharkawy et al. Local anesthetic solution is administrated between the rhomboid muscle and intercostal muscles over the T5-6 ribs. It has been reported that RIB may provide effective analgesia management for several breast surgeries. The primary aim of the study is to compare postoperative opioid consumption and the secondary aim is to evaluate postoperative pain scores (VAS), adverse effects related with opioids (allergic reaction, nausea, vomiting).
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Opioid consumption
Timeframe: Changes from baseline opioid consumption at postoperative 1, 2, 4, 8, 16 and 24 hours.