“…Sixteen studies used a multiorifice epidural catheter, [24][25][26][27]32,35,38,[41][42][43][44][45][46]50,51,53 three studies used a single-orifice epidural catheter, 28,34,48 while others did not specify the catheter type. The overall risk of bias was low for 13 (43%) studies, [24][25][26][27][28]34,35,38,40,41,44,45,48 some concerns for 11 (37%) Reports of included studies (n = 30) Included Eur J Anaesthesiol 2024; 41:411-420 studies, [29][30][31][32][33]42,43,47,[50][51][52] and high for six (20%) studies 36,37,39,46,49,53 (Supplementary Digital Content 3, Fig.…”