From: Comparison of the effects of transversus thoracic muscle plane block and pecto-intercostal fascial block on postoperative opioid consumption in patients undergoing open cardiac surgery: a prospective randomized study
TTMPB (n = 40)
PIFB (n = 40)
p value
Time to first request of rescue analgesic (h)
6.7 ± 1.4
7.8 ± 1.7
0.003
Total morphine-24h (mg)
7.8 ± 2.0
4.8 ± 1.0
 < 0.001