Rampersaud et al modified the Spine Adverse Events Severity System (SAVES). SAVES improves the capture and classification of adverse events associated with spine surgery. The authors are from the University of Toronto and Toronto Western Hospital.
Parameters:
(1) clinical impact (adverse event and outcome)
(2) impact on length of stay (LOS)
Adverse Event
Impact on Outcome
Impact on LOS
Severity Code
none
none
none
0
requires no or minimal therapy
none
increase <= 2 days
I
requires medical and/or surgical treatment
no permanent or prolonged negative effect
increase 3-7 days
II
requires medical and/or surgical treatment
permanent or prolonged negative effect
increase 8 to 14 days
III
requires medical and/or surgical treatment
results in death
increase > 14 days
IV
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