Background and Aims In this study, the effects of ultrasound (US) guided erector spinae plane (ESP) block and pectoralis nerve (PECS) block on acute and chronic pain in patients who underwent breast cancer surgery were studied.
Methods Ninety patients were divided into three groups: the ESP, PECS and the control group (ethical approval number-24237859-207). All blocks were applied in the preoperative period using 30 ml of 0.25% bupivacaine (figure 1). The control group received no intervention.
The measures recorded were time to onset of block, intraoperative remifentanil consumption, time to first request for analgesia via patient-controlled analgesia (PCA), morphine consumption in the first postoperative 24 hours, the number of patients who requested rescue analgesia, and the visual analogue scale (VAS) pain scores of the arm at rest and in abduction at hours 1, 3, 6, 9, 12, and 24. In addition, the VAS pain scores in the third month following discharge were asked to evaluate the development of chronic pain.
Results Both VAS scores, intraoperative remifentanil consumption, and postoperative 24-hour morphine consumption were lower in the ESP and PECS groups compared with the control group. The time to first request for analgesia via PCA was longer in the groups performed block compared with the control group. While the time to onset of block was found to be shorter in the PECS group, none of the patients needed rescue analgesia.
Conclusions The study demonstrated that the US-guided ESP and PECS block performed in patients who underwent breast cancer surgery provided effective analgesia for acute and chronic pain.
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