Table 4.

Findings on blood loss associated with using the RIA system

Authors/Year of publication	Total number of procedures assessed	Blood loss		Blood transfusion (no/total no)
		Volume (ml)	Drop in hemoglobin (g/dl)
Barlow and Kuhn (2014) [55]	3	‘No excessive blood loss’
Calori et al. (2014) [56]	35	572.85	1.66	–
Donders et al. (2016) [18]	2	–	4.40	2/2
Grote et al. (2015) [57]	5	–	3.30	0/5
Han et al. (2015) [42]	57	–	3.15	7/57
Haubruck et al. (2018) [43]	11	–	6.20	11/341
Le Baron et al. (2019) [45]	30	–	–	3/30
Marchand et al. (2017) [47]	62	647.00	–	27/62
Marko et al. (2016) [58]	2	1250.00	–	–
Martella et al. (2021) [48]	65	388.00	–	9/64
Niikura et al. (2021) [50]	42	1158.60	–	–
O’Callaghan et al. (2019) [59]	2	–	–	0/2
Quintero et al. (2010) [60]	20	–	–	1/20
Total	336	803.29	3.74	60/583 (9.72%)