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Comparison of efficacy of ultrasound-guided single-level thoracic paravertebral block and complete antethoracic block for postoperative analgesia in modified radical mastectomy: A noninferiority randomized controlled trial

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Compare the analgesic efficacy of thoracic paravertebral block and complete antethoracic block in postoperative care for breast surgery.
Randomized controlled trial
Included 70 patients aged 18-70 undergoing modified radical mastectomy
Group A received thoracic paravertebral block with 25 ml of 0.5% ropivacaine
Group B received complete antethoracic block with 60 ml of 0.2% ropivacaine
Measured duration of analgesia, postoperative pain scores, and patient satisfaction
CAB group experienced longer duration of analgesia compared to PVB group
Lower pain scores in the first 2 hours for the CAB group
No significant difference in patient satisfaction between the two groups
Noninferiority could not be established for CAB due to confidence interval limits

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A randomized trial compares analgesic effects of two block techniques for breast surgery, suggesting CAB as a feasible option.

Singh et al. (2026) studied this question.

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