Table 4.

Safety outcomes

Subject	Visual Score	Visual Observation
1	1	Small blood clots between fragments, erythema along calyx wall
2	0	No injury
3	1	Petechial hemorrhage along some papillae, mild to negligible bruising of urothelium
4	1	Mild to negligible urothelium bruising
5	1	Small blood clots between fragments, mild to negligible urothelium bruising
6	0	No injury
7	0	No injury
8	Not applicable	Treated papilla obscured by blood clot
9	Not applicable	There were no data to score since ureteroscope video did not record
10	1	Small blood clots attached to heavy plaque at papilla tip
11	0	No injury observed
12	0	No injury observed
13	1	Tiny sites of bleeding at papilla tip
14	1	Tiny red spots on papilla tip
15	1	Small bleed for fornix region
16	1	Small blood clots, some petechiae
17	1	Small blood clots, some petechiae
18	1	Thin streams of blood from tiny sites of injury
19	1	Multiple but tiny sites of bleeding on papilla