. 2020 Jan 31;60(3):637–649. doi: 10.1111/trf.15670

Table 3.

Bleeding scales used in studies of minimally invasive procedures

Scale	Items
SIR	A: no therapy, no consequence; B: requiring nominal therapy, no consequence, including overnight admission for observation; C: requiring therapy, minor hospitalization <48 hours; D: requiring major therapy, unplanned increase in level of care, prolonged hospitalization >48 hours; E: permanent adverse sequelae; F: death
CTCAE^*	1: mild symptoms not requiring invasive intervention; 2: mild symptoms requiring minimally invasive interventions or aspiration; 3: event indicating transfusion, radiological or surgical procedure; 4: life‐threatening consequences necessitating major urgent intervention; 5: death

Scale

Items

SIR

A: no therapy, no consequence;

B: requiring nominal therapy, no consequence, including overnight admission for observation;

C: requiring therapy, minor hospitalization <48 hours;

D: requiring major therapy, unplanned increase in level of care, prolonged hospitalization >48 hours;

E: permanent adverse sequelae;

F: death

CTCAE^*

1: mild symptoms not requiring invasive intervention;

2: mild symptoms requiring minimally invasive interventions or aspiration;

3: event indicating transfusion, radiological or surgical procedure;

4: life‐threatening consequences necessitating major urgent intervention;

5: death

Zeidler et al used an adapted form of CTCAE that included prolonged compression as grade 2 bleeding.

SIR = Society of Interventional Radiology; CTCAE = Common Terminology Criteria for Adverse Events.