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Table 6 Effects of TTP-PECS and TPVB on pain-related mediators

From: Ultrasound-guided transversus thoracic muscle plane-pectoral nerve block for postoperative analgesia after modified radical mastectomy: a comparison with the thoracic paravertebral nerve block

Indicator Group Before surgery Immediately after surgery 12 h after surgery 24 h after surgery
PGE2 (ng/l) TTP-PECS group 28.60 ± 3.82 34.53 ± 5.69# 38.18 ± 6.25#* 42.38 ± 6.81#
TPVB group 28.51 ± 3.81 34.80 ± 5.96# 46.66 ± 8.50# 42.66 ± 8.35#
P value 0.92 0.84 0.00 0.87
NPY (μg/ml) TTP-PECS group 79.01 ± 12.55 122.07 ± 15.74# 142.29 ± 22.93#* 149.11 ± 23.02#
TPVB group 79.53 ± 12.39 122.67 ± 16.91# 160.22 ± 21.78# 148.13 ± 22.16#
P value 0.86 0.87 0.00 0.85
β-Endorphin (ng/l) TTP-PECS group 65.14 ± 6.69 69.64 ± 6.04# 74.37 ± 5.71#* 79.97 ± 5.67#
TPVB group 64.36 ± 6.02 69.50 ± 6.72# 83.72 ± 8.17# 79.87 ± 7.76#
P value 0.59 0.92 0.00 0.95
  1. Compared with TPVB, TTP-PECS treatment significantly decreased the levels of pain-related mediators at 12 h after surgery. Data are expressed as mean ± SD (39 in the TTP-PECS group and 38 in the TPVB group)
  2. #P < 0.05, versus before surgery
  3. *P < 0.05, versus the TPVB group