Table 1 PICO criteria for including studies

Population

Patients of at least 18 years undergoing breast surgery.

Intervetion

Postoperative analgesia with locoregional anesthesia techniques.

Comparator

Standard pain treatment.

Outcomes

Pain Intensity, Opioid Consumption, Adverse Events, Patient Satisfaction.

Study TYPE

Randomized Controlled Trial.

Time

From 2010 to present.