Loco-regional fascial blocks in breast-conserving surgery: towards a new standard?

The main endpoints included postoperative pain measured by Numeric Rating Scale (NRS, 0-10), opioid consumption within 24 h (mg of intravenous morphine equivalents), incidence of postoperative nausea and vomiting (%), length of hospital stay, and incidence of chronic post-operative pain at three months.

Mean postoperative pain scores were 1.2 ± 0.5 (1 h), 1.5 ± 0.6 (6 h), 1.3 ± 0.5 (12 h) and 0.9 ± 0.4 (24 h).

Morphine consumption averaged 2.1 ± 0.7 mg (intravenous morphine equivalents) within the first 24 h.

Postoperative nausea and vomiting occurred in 4% of patients.