“…Patients received a wide range of previous analgesic medications (see Table 4 ): acetaminophen (3 studies [ 18 , 27 , 28 ]), anticonvulsivants, such as gabapentin and pregabalin (8 studies [ 18 , 19 , 20 , 21 , 22 , 27 , 28 , 30 ]), antidepressants (7 studies [ 18 , 19 , 20 , 21 , 22 , 27 , 30 ]), interventional techniques, such as neuroaxial blocks, intercostal blocks or sympathetic blocks (1 study [ 21 ]), NSAIDs (2 studies [ 18 , 21 ]), opioids (7 studies [ 18 , 19 , 20 , 21 , 22 , 28 , 30 ]), and topical lidocaine (3 studies [ 20 , 21 , 22 ]).…”