Table 2.

Side effects.

Author and publication year	RSB no.	RSB SE	LA no.	LA SE
Isaac and colleagues [14]	7	0	6	1 (nausea)
Gurnaney and colleagues [12]	26	4 (2N + 2 V)	26	2 (1N + 1 V)
Dingeman and colleagues [10]	27	NA	25	NA
Flack and colleagues [11]	20	NA	20	NA
Hamill and colleagues [13]	63	NA	67	NA
Uchinami and colleagues [17]	17	2 (PONV)	17	2 (PONV)
Maloney and colleagues [15]	136	NA	139	NA
Tamura and colleagues [16]	38	1 (PONV)	38	1 (PONV)

RSB: rectal sheath block no.; SE: side effect; LA: local anaesthesia infiltration; NA: not applicable; N: nausea; V: vomiting; PONV: postoperative nausea and vomiting