Ultrasound-guided erector spine plane block (ESPB) utilization in managing refractory renal colic pain in the emergency department

Mehdi Torabi, Javad Darijani, Moghaddameh Mirzaee, Amin Honarmand

Table 2. Pain intensity changes compared to prior time in ESPB and fentanyl groups

Groups Comparison of NRS between time 1 and 2 (P-value) Comparison of NRS between time 2 and 3 (P-value) Comparison of NRS between time 1 and 3 (P-value) Fentanyl group <0.01 <0.01 <0.01 ESPB group <0.01 <0.01 <0.01