Efficacy of Pectoral Nerve Block Type II for Breast-Conserving Surgery and Sentinel Lymph Node Biopsy: A Prospective Randomized Controlled Study
Table 1
Baseline demographic and clinical characteristics of study subjects.
PECS II group ()
Control group ()
Age (years)
45.4 ± 9.9
45.2 ± 11.9
BMI (kg/m2)
22.8 ± 2.8
23.9 ± 3.1
ASA class (I/II)
36 (90.0%)/4 (10.0%)
29 (76.3%)/9 (23.7%)
Neoadjuvant CTx
6 (15.0%)
6 (15.8%)
Surgical time (min)
93.5 ± 19.9
89.7 ± 24.9
Intraoperative remifentanil dosage (μg)
491.0 (440.0; 571.0)
477.0 (420.0; 600.0)
Tumor location (left/right)
14 (35.0%)/26 (65.0%)
21 (55.3%)/17 (44.7%)
Tumor location (quadrant)
UOQ/LOQ
11 (27.5%)/7 (17.5%)
15 (39.5%)/7 (18.4%)
UIQ/LIQ
12 (30.0%)/3 (7.5%)
7 (18.4%)/3 (7.9%)
12 o’clock/6 o’clock
5 (12.5%)/0 (0.0%)
1 (2.6%)/1 (2.6%)
3 o’clock/9 o’clock
0 (0.0%)/2 (5.0%)
2 (5.2%)/1 (2.6%)
Subareolar
0 (0.0%)
1 (2.6%)
Data are expressed as mean ± SD (standard deviation), number (%), or median (interquartile range). BMI, body mass index; ASA, American Society of Anesthesiologists Physical Status Classification; CTx, chemotherapy; UOQ, upper outer quadrant; LOQ, lower outer quadrant; UIQ, upper inner quadrant; LIQ, lower inner quadrant.
